This document provides an overview of abrasive, erosive, and corrosive wear in slurry pumps. Slurry pumps are used to transport slurries containing solid particles in industries like mining. Wear reduces the lifespan of slurry pump components. Erosive wear, caused by solid particle impact, is the main wear phenomenon. Factors like particle properties, speed, and concentration affect wear. Erosive wear primarily occurs on impellers and casings. Researchers have studied wear mechanisms experimentally and proposed materials like ceramics and metal matrix composites to improve wear resistance.
This document provides a review of abrasive water jet machining (AWJM). It discusses how AWJM works by using a high-pressure water jet to accelerate abrasive particles, allowing for non-traditional machining of materials. The document summarizes the materials used as abrasives in AWJM, including garnet, aluminum oxide, diamond, and silicon carbide. It also discusses experimental observations of AWJM, such as the geometry of kerf cuts and surface morphology resulting from different traverse speeds.
Experimental Investigation on Effect of Particle Sizes of Molybdenum Disulphi...IJMER
In the present work, experimental investigation has been carried out to identify the
effectiveness of employing three different particle sizes of MoS2 (Nano-particles: 40 nm size, Technical
superfine grade: 1.75 μm size and Technical grade: 53 μm size) in varying quantities (0.5, 1.0 and 1.5% by
weight) on the wear of the sliding surfaces. The experiments were conducted on a conformal block and
disk test setup. The running-in distance required to achieve steady state wear was determined
experimentally. The wear of the block is measured as its weight loss after the test. The results of the
experiments are reported
IRJET- Experimental Study on Bagasse Ash and its Strength on M25 & M30 Grade ...IRJET Journal
This document presents an experimental study on the use of bagasse ash and quarry dust to partially replace cement and fine aggregate in concrete. Bagasse ash is a waste product from sugar refining that contains silica and can have pozzolanic properties. The study characterized bagasse ash chemically and physically, and tested concrete with 0-30% bagasse ash replacement of cement by weight. Tests on fresh and hardened concrete found that 10% bagasse ash replacement increased compressive strength compared to normal concrete. Further tests then replaced fine aggregate with quarry dust in 10% bagasse ash concrete and found this also increased compressive strength. The results indicate bagasse ash and quarry dust can potentially replace cement and fine aggregate in
This document describes a study investigating the effect of operating parameters on the erosion mechanism of CA6NM steel, a commonly used hydroturbine steel. Slurry erosion testing was conducted using sand particles collected from a river, varying velocity, impingement angle, and concentration. Different erosion mechanisms were observed under different conditions. At normal impingement, platelet formation and removal caused material loss, while at acute angles, ploughing dominated. Models are proposed for unfamiliar erosion mechanisms observed. The interaction of parameters like velocity and concentration were also analyzed. Finally, a statistical model was developed based on the experimental results to predict erosion rates under various conditions.
IRJET- Temperature Reducing Concrete using Ceramic WasteIRJET Journal
This document summarizes a study that investigated using ceramic waste powder and spent wash from sugar production as partial replacements for cement in concrete. Ceramic waste powder was used to replace cement by 5% and 10% by weight, and spent wash was used to replace water by 0.5% and 1%. Tests were conducted to determine the slump, compaction factor, and compressive strength of the concrete mixtures. The results showed that the compressive strength at 28 days was highest for mixtures with 10% ceramic waste powder replacement and 0.5% spent wash replacement, at 53.93 MPa and 50.52 MPa respectively. Partial replacement of cement with ceramic waste powder and partial replacement of water with spent wash improved the properties
This document provides a summary of key information about centrifugal slurry pumps, including:
- It defines the scope as covering single-stage, overhung centrifugal slurry pumps that are horizontal or vertical for industrial use.
- The objective is to outline information needed to define, select, apply, operate and maintain centrifugal slurry pumps.
- It discusses various types of centrifugal slurry pumps and their applications. Key terms related to slurries and their properties are also defined.
- Factors that affect slurry pump performance and wear are examined, along with guidelines for selection and application of pumps for slurry services.
The document discusses advances in abrasive flow machining (AFM) and orbital abrasive flow machining technologies. AFM uses a semisolid abrasive media to deburr, polish, or radius surfaces by flowing it over target areas. Orbital abrasive flow machining combines AFM with an orbital grinding motion to uniformly remove material from complex shapes. Both techniques can process a variety of materials and have applications in aerospace, automotive, and other industries.
Abrasive water jet machining (AWJM) is a relatively new machining technique. Abrasive Water Jet Machining is extensively used in many industrial applic ations. AWJM is a non- conventional machining process where material is removed by impa ct erosion of high pressure high velocity of water and entrained high velocity of grit abrasi ves on a work piece. There are so many process parameter affect quality of machined surface cut by AW JM. Important process parameters which mainly affect the quality of cutting are traverse spe ed,hydraulic pressure,stand of distance,abrasive flow rate and types of abrasive. Important quality para meters in AWJM are Material Removal Rate (MRR),Surface Roughness (SR),Kerf width,tape ring of Kerf. This seminar report reviews the research work carried out so far in the area AWJM.
This document provides a review of abrasive water jet machining (AWJM). It discusses how AWJM works by using a high-pressure water jet to accelerate abrasive particles, allowing for non-traditional machining of materials. The document summarizes the materials used as abrasives in AWJM, including garnet, aluminum oxide, diamond, and silicon carbide. It also discusses experimental observations of AWJM, such as the geometry of kerf cuts and surface morphology resulting from different traverse speeds.
Experimental Investigation on Effect of Particle Sizes of Molybdenum Disulphi...IJMER
In the present work, experimental investigation has been carried out to identify the
effectiveness of employing three different particle sizes of MoS2 (Nano-particles: 40 nm size, Technical
superfine grade: 1.75 μm size and Technical grade: 53 μm size) in varying quantities (0.5, 1.0 and 1.5% by
weight) on the wear of the sliding surfaces. The experiments were conducted on a conformal block and
disk test setup. The running-in distance required to achieve steady state wear was determined
experimentally. The wear of the block is measured as its weight loss after the test. The results of the
experiments are reported
IRJET- Experimental Study on Bagasse Ash and its Strength on M25 & M30 Grade ...IRJET Journal
This document presents an experimental study on the use of bagasse ash and quarry dust to partially replace cement and fine aggregate in concrete. Bagasse ash is a waste product from sugar refining that contains silica and can have pozzolanic properties. The study characterized bagasse ash chemically and physically, and tested concrete with 0-30% bagasse ash replacement of cement by weight. Tests on fresh and hardened concrete found that 10% bagasse ash replacement increased compressive strength compared to normal concrete. Further tests then replaced fine aggregate with quarry dust in 10% bagasse ash concrete and found this also increased compressive strength. The results indicate bagasse ash and quarry dust can potentially replace cement and fine aggregate in
This document describes a study investigating the effect of operating parameters on the erosion mechanism of CA6NM steel, a commonly used hydroturbine steel. Slurry erosion testing was conducted using sand particles collected from a river, varying velocity, impingement angle, and concentration. Different erosion mechanisms were observed under different conditions. At normal impingement, platelet formation and removal caused material loss, while at acute angles, ploughing dominated. Models are proposed for unfamiliar erosion mechanisms observed. The interaction of parameters like velocity and concentration were also analyzed. Finally, a statistical model was developed based on the experimental results to predict erosion rates under various conditions.
IRJET- Temperature Reducing Concrete using Ceramic WasteIRJET Journal
This document summarizes a study that investigated using ceramic waste powder and spent wash from sugar production as partial replacements for cement in concrete. Ceramic waste powder was used to replace cement by 5% and 10% by weight, and spent wash was used to replace water by 0.5% and 1%. Tests were conducted to determine the slump, compaction factor, and compressive strength of the concrete mixtures. The results showed that the compressive strength at 28 days was highest for mixtures with 10% ceramic waste powder replacement and 0.5% spent wash replacement, at 53.93 MPa and 50.52 MPa respectively. Partial replacement of cement with ceramic waste powder and partial replacement of water with spent wash improved the properties
This document provides a summary of key information about centrifugal slurry pumps, including:
- It defines the scope as covering single-stage, overhung centrifugal slurry pumps that are horizontal or vertical for industrial use.
- The objective is to outline information needed to define, select, apply, operate and maintain centrifugal slurry pumps.
- It discusses various types of centrifugal slurry pumps and their applications. Key terms related to slurries and their properties are also defined.
- Factors that affect slurry pump performance and wear are examined, along with guidelines for selection and application of pumps for slurry services.
The document discusses advances in abrasive flow machining (AFM) and orbital abrasive flow machining technologies. AFM uses a semisolid abrasive media to deburr, polish, or radius surfaces by flowing it over target areas. Orbital abrasive flow machining combines AFM with an orbital grinding motion to uniformly remove material from complex shapes. Both techniques can process a variety of materials and have applications in aerospace, automotive, and other industries.
Abrasive water jet machining (AWJM) is a relatively new machining technique. Abrasive Water Jet Machining is extensively used in many industrial applic ations. AWJM is a non- conventional machining process where material is removed by impa ct erosion of high pressure high velocity of water and entrained high velocity of grit abrasi ves on a work piece. There are so many process parameter affect quality of machined surface cut by AW JM. Important process parameters which mainly affect the quality of cutting are traverse spe ed,hydraulic pressure,stand of distance,abrasive flow rate and types of abrasive. Important quality para meters in AWJM are Material Removal Rate (MRR),Surface Roughness (SR),Kerf width,tape ring of Kerf. This seminar report reviews the research work carried out so far in the area AWJM.
A Review Tribological analysis of Cast Iron by Advanced Coatingijtsrd
In our engineering system, friction, wear and tribology are not phenomena that most peoples are considering on daily basis. Wear tribological process occurs when two surfaces are in contact and both one are moving relative to each other. The cast iron is widely used in industrial sector. It have high rate of friction. To reduce the friction the various types of coating is analyzed as well as with lubrication the rate of wear decreases. Prof. Matin A. Shaikh | Prof. Ajij A. Shaikh | Prof. Mrs. G. V. Patil ""A Review: Tribological analysis of Cast Iron by Advanced Coating"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29871.pdf
Paper Url : https://www.ijtsrd.com/engineering/mechanical-engineering/29871/a-review-tribological-analysis-of-cast-iron-by-advanced-coating/prof-matin-a-shaikh
IRJET- Analysis of Properties of Mix Design Concrete using Steel ScrapIRJET Journal
The document presents the results of a study that analyzed the properties of concrete with the addition of varying percentages of steel scrap. A total of 45 concrete specimens were cast and cured, including cubes, beams, and cylinders. The specimens contained 0%, 0.5%, 1%, 1.5%, and 2% steel scrap by weight of the concrete. Tests were performed on the 28-day cured concrete to determine the compressive strength, split tensile strength, and flexural strength based on Indian standards. The test results found that concrete with 1% steel scrap achieved the highest compressive strength and strengths generally increased with steel scrap content up to 1% before declining. The study concluded that steel scrap concrete can provide higher strengths than plain concrete
Effect of mill scale and fly ash waste on the performance of cement mortareSAT Journals
Abstract
This paper investigates effect of mill scale and fly ash wastes as a replacement of fine aggregate generally natural sand on the performance of cement mortar. Utilization of fly ash and mill scale in cement mortar production not only provides significant environmental benefits but also enhances performance of the cement mortar when used at optimum amounts. They may be used in the form of finely ground additive to replace part of aggregates in cement mortar. This study looked at the feasibility of mill scale and fly ash waste inclusion as partial aggregate replacement in normal cement mortar. Properties of cement mortar incorporating fly ash and mill scale waste as partial substitution for natural aggregate were investigated. The study involves six replacement levels of mill scale and fly ash wastes into cement mortar for each mix design. Mortar cubes are tested for strength, & water absorption. The partial replacement of fine aggregate by M(3,30), M(5,30), M(8,30), M(10,30), M(12,30), M(15,30) ( M-mix of mill scale & fly ash %) improves the properties of normal mortar. In the design mix of industrial wastes produced, percentage of fly ash is kept constant (30 %) and mill scale is varied from 0 to 15 % by weight of natural sand. The test results indicate that the mechanical properties of mill scale and fly ash modified mortar are improved to a great extent, whereas the water absorption is reduced as compared to that of plain mortar.
Keywords: Mill Scale, Fly Ash, Compressive Strength, Durability, Water Absorption, Density
This document provides an overview of industrial adhesives and adhesive bonding technology. It discusses the advantages of adhesive bonding over mechanical fastening, including continuous bonding, reduced stress concentrations, and increased design freedom. It also reviews limitations of adhesive bonding such as temperature and chemical resistance. The document describes different types of adhesives and their characteristics, including anaerobics, cyanoacrylates, epoxies, polyurethanes, and others. It emphasizes the importance of designing joints for adhesive bonding and considering factors like joint geometry, adhesive selection, loading conditions, and manufacturing process.
1) The study examined how wear debris in lubricating oil influences rolling contact fatigue life in bearings.
2) Testing found that reducing the filtration level of the oil from 40 μm to 3 μm increased fatigue life by up to 7 times.
3) Analysis of failed bearings showed that early failures, which most influence calculated bearing life, were initiated by wear debris indentations on the surface rather than subsurface fatigue as previously believed.
This paper introduces air bearings. High-speed air bearings offer very specific advantages over other, more conventional bearing technologies. The reason use of air bearing air bearings as it avoid the traditional bearing-related problems of friction, wear, and lubricant handling, and offer distinct advantages in precision positioning and high speed applications. The use of air bearings means tool life can be greatly extended. Air bearings provide extreme radial and axial rotational precision. The factors affecting the performance of the air bearing like friction, wear, stiffness, load capacity. This paper also introduces with the types of air bearing. New air bearing products like flat bearing, air bushing, vacuum preloaded bearings, air bearing slides, radial bearing and its applications in various fields. It also discuss about the advantages and disadvantages of air bearings.
The document discusses surface preparation methods for bonding with industrial adhesives. It emphasizes that surface preparation is critical for achieving a strong bond, as the adhesive must adhere well to the substrates. The types of surface preparation depend on the expected performance requirements, service conditions, and cost considerations. Common preparation methods include degreasing to remove oils and greases, abrading to increase surface area, and special pretreatments like plasma treatment or chemical etching. Thorough cleaning without contamination is important for optimal bonding.
Effects of Tribological Parameters on Slurry Erosion Behaviour of Uncoated an...Sunil Kumar
This paper describes the pioneering work of various researchers in the field of slurry erosion behaviour of uncoated and coated materials in various industrial applications. The present study is focused on the slurry erosion behaviour of ash slurry disposal system of thermal power plants. The key components such as impeller and casing of ash slurry disposal pumps in thermal power plants experience this phenomenon of wear. Tribological parameters such as solid particle concentration, impact velocity of erodent on the target surface, impact angle, erodent particle size and shape, hardness of the striking particles and target material, etc. are responsible for slurry erosion. The research results show that the influence of tribological parameters on the slurry erosion is found to be significant and need to be evaluated and analyzed properly. The slurry erosion can be minimized by proper selection of materials and/or by providing the suitable protective coating on the material which can enhance the surface properties.
Influence of using white cement kiln dust as a mineral filler on hot asphaltIAEME Publication
This document discusses using white cement kiln dust (WCKD) as a mineral filler in hot asphalt concrete mixtures. WCKD is a byproduct of cement production that is usually disposed of, but can provide economic and environmental benefits if used in asphalt mixtures. The document reports on a study that used various percentages of WCKD, alone and combined with cement and limestone, to prepare asphalt mixtures. Standard tests showed that mixtures with WCKD met specifications and performed similarly to mixtures with traditional fillers. The results indicate that using WCKD as a filler can reduce waste and costs for asphalt producers while maintaining quality.
Experimental Test on Gfrp Gratings for Mechanical Properties and Chemical Res...IOSR Journals
This document describes an experimental study that tested the mechanical properties and chemical resistance of glass fiber reinforced plastic (GFRP) gratings. GFRP gratings were manufactured using a hand lay-up process with isopthalic resin and glass fiber rovings. The gratings were then subjected to tensile testing, flexural testing, chemical resistance testing using sulfuric acid and sodium hydroxide, and load bearing testing. The tensile testing found an ultimate tensile strength of 231.985 MPa. Flexural testing found a cross breaking strength of 448.2 N/mm2. Chemical resistance testing showed minimal weight changes (<0.2%) after exposure. Load bearing testing showed the gratings could withstand loads
This document discusses size reduction, which is the process of reducing the size of solid particles. It explains that size reduction is important for processes like grinding gypsum rock or pigments. It then describes how size reduction is achieved through applying pressure to fracture particles along cleavage planes. Finally, it outlines the objectives of size reduction like increasing reaction rates or improving material handling, and lists operating variables that influence the process like moisture content or the reduction ratio.
Centrifugal barrel finishing (CBF) is a high-energy mass finishing process that can produce very refined surfaces on parts in a fraction of the time required by conventional barrel or vibratory finishing. CBF works by mounting barrels on a rotating turret such that as the turret spins, the barrels counter-rotate, subjecting the media and parts inside to high centrifugal forces and sliding motion that quickly remove burrs and create smooth surfaces. CBF is well-suited for precision applications and developing specialized finishes more rapidly than conventional equipment.
It is a final year project report for mechanical engineering. This report is a study on the erosion of various materials using slurry (water and silica) and various parameters which affect that.
Experimental Study on Increasing Strength of Pervious ConcreteIRJET Journal
This document presents the results of an experimental study on increasing the strength of pervious concrete. Pervious concrete allows stormwater to infiltrate into the ground while providing pavement. However, it typically lacks strength compared to traditional concrete. The study tested different mix proportions and the addition of flexural reinforcement to improve strength. Eleven mix designs were tested with varying proportions of fine and coarse aggregates. Cubes were cast and tested for compressive strength after 7 days of curing. The highest average compressive strength of 9.51 MPa was achieved using a 1:2.25:2.25 mix proportion with the addition of aluminum mesh reinforcement. The study concluded that changing aggregate proportions and adding reinforcement can significantly increase the strength of per
IRJET- Effect of Particle and Target Material Characteristics on Erosion Wear...IRJET Journal
This document summarizes research on the effect of various parameters on erosive wear of materials due to solid particle impact. It discusses that erosive wear is influenced by impact parameters like particle velocity and impingement angle, particle properties like size, hardness and density, and target material properties. It reviews studies showing that wear increases with particle velocity, typically as a power law relationship, and is highest at intermediate impingement angles for ductile materials. Particle size effects depend on velocity, with wear increasing until a saturation point. Harder particles cause more wear up to a threshold hardness. Higher particle concentrations may slightly reduce wear. The document analyzes these parameters that influence erosive wear in industrial applications like material conveying.
This document summarizes research on the erosion behavior of stainless steel when exposed to solid particle erosion. Testing was conducted on stainless steel samples at different impact angles (30, 60, 90 degrees), pressures (4-6 kgf/mm2), and standoff distances (100-200mm) between the nozzle and sample. The results showed that erosion rate increased with decreasing impact angle and increasing pressure, with the highest erosion occurring at 30 degrees and highest pressure. Microscopic analysis of eroded surfaces found evidence of plastic deformation and abrasion damage. The research contributes to understanding the erosion resistance of ductile metals under various testing parameters.
Slurry erosion comparison of d gun sprayed stellite-6, cr3 c2-25nicr coatings-2IAEME Publication
This document discusses a study that compares the slurry erosion performance of detonation gun sprayed Stellite-6 and Cr3C2-25NiCr ceramic coatings on a 13Cr4Ni stainless steel substrate under hydro accelerated conditions. Specimens of the coated materials and uncoated substrate were tested using a high speed erosion tester at angles of 30 and 90 degrees. The Stellite-6 coating performed better than the Cr3C2-25NiCr coating and substrate steel at 30 degrees. However, at 90 degrees the substrate steel performed better than the coatings. The document provides details on the materials, coating process, erosion testing method and parameters used in the study.
This document discusses the design and manufacturing of a magneto-rheological fluid assisted damper. It begins with an abstract and introduction on MR fluids and how they can be used in dampers. It then describes the basic working of MR dampers and different types of MR dampers and suspensions. The document provides details on the manufacturing process of MR fluids, including the composition of materials used. It concludes with the methodology used to manufacture the MR fluid, including mixing iron particles, oleic acid, white grease, and paraffin oil at specific weights and mixing speeds.
EXPERIMENTAL STUDY OF SCC BY ADDING POLYPROPYLENE FIBER WITH CASHEW NUT SHELL...IRJET Journal
This document presents an experimental study on the mechanical properties of self-compacting concrete (SCC) with the addition of polypropylene fiber and partial replacement of cement with cashew nut shell ash (CNSA). CNSA was used to replace cement at levels of 5%, 10%, 15%, and 20% and polypropylene fiber was added at 1%. Cubes and cylinders were cast and tested for compressive and split tensile strength at 7 and 28 days. Test results showed that the mix with 10% CNSA replacement and 1% polypropylene fiber addition achieved the highest strengths, exceeding that of the control mix without additions. Therefore, this mix was determined to be the optimum mix proportion studied
IRJET- Friction Stir Welding in Circular PipesIRJET Journal
This document discusses friction stir welding of circular aluminum pipes. Friction stir welding is a solid-state joining technique that uses a rotating tool to plastically deform and join two abutting metal workpieces without melting them. The document examines the effects of tool rotation speed, tool geometry, and process parameters on the resulting weld strength and microstructure. Tensile strength, hardness, and microstructure of friction stir welded aluminum alloy joints are evaluated to determine the optimal welding parameters and conditions. Friction stir welding shows potential for joining pipes in industries such as oil and gas.
This document provides a literature review and overview of rolling processes and power parameters. It discusses key terms related to rolling, the principles of rolling processes, hot rolling and cold rolling, rolling materials, torque in rolling, and power in rolling. The main points are:
- Rolling is a metal forming process that reduces thickness or changes cross-section of a workpiece by compressive forces from rolls.
- Key terms include ingot, bloom, billet, plate, strip, and foil which describe intermediate and final rolled products.
- Hot and cold rolling processes are described along with their effects on material properties.
- Formulas for calculating torque and power in rolling are presented which factor in parameters like rolling
A Review Tribological analysis of Cast Iron by Advanced Coatingijtsrd
In our engineering system, friction, wear and tribology are not phenomena that most peoples are considering on daily basis. Wear tribological process occurs when two surfaces are in contact and both one are moving relative to each other. The cast iron is widely used in industrial sector. It have high rate of friction. To reduce the friction the various types of coating is analyzed as well as with lubrication the rate of wear decreases. Prof. Matin A. Shaikh | Prof. Ajij A. Shaikh | Prof. Mrs. G. V. Patil ""A Review: Tribological analysis of Cast Iron by Advanced Coating"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020, URL: https://www.ijtsrd.com/papers/ijtsrd29871.pdf
Paper Url : https://www.ijtsrd.com/engineering/mechanical-engineering/29871/a-review-tribological-analysis-of-cast-iron-by-advanced-coating/prof-matin-a-shaikh
IRJET- Analysis of Properties of Mix Design Concrete using Steel ScrapIRJET Journal
The document presents the results of a study that analyzed the properties of concrete with the addition of varying percentages of steel scrap. A total of 45 concrete specimens were cast and cured, including cubes, beams, and cylinders. The specimens contained 0%, 0.5%, 1%, 1.5%, and 2% steel scrap by weight of the concrete. Tests were performed on the 28-day cured concrete to determine the compressive strength, split tensile strength, and flexural strength based on Indian standards. The test results found that concrete with 1% steel scrap achieved the highest compressive strength and strengths generally increased with steel scrap content up to 1% before declining. The study concluded that steel scrap concrete can provide higher strengths than plain concrete
Effect of mill scale and fly ash waste on the performance of cement mortareSAT Journals
Abstract
This paper investigates effect of mill scale and fly ash wastes as a replacement of fine aggregate generally natural sand on the performance of cement mortar. Utilization of fly ash and mill scale in cement mortar production not only provides significant environmental benefits but also enhances performance of the cement mortar when used at optimum amounts. They may be used in the form of finely ground additive to replace part of aggregates in cement mortar. This study looked at the feasibility of mill scale and fly ash waste inclusion as partial aggregate replacement in normal cement mortar. Properties of cement mortar incorporating fly ash and mill scale waste as partial substitution for natural aggregate were investigated. The study involves six replacement levels of mill scale and fly ash wastes into cement mortar for each mix design. Mortar cubes are tested for strength, & water absorption. The partial replacement of fine aggregate by M(3,30), M(5,30), M(8,30), M(10,30), M(12,30), M(15,30) ( M-mix of mill scale & fly ash %) improves the properties of normal mortar. In the design mix of industrial wastes produced, percentage of fly ash is kept constant (30 %) and mill scale is varied from 0 to 15 % by weight of natural sand. The test results indicate that the mechanical properties of mill scale and fly ash modified mortar are improved to a great extent, whereas the water absorption is reduced as compared to that of plain mortar.
Keywords: Mill Scale, Fly Ash, Compressive Strength, Durability, Water Absorption, Density
This document provides an overview of industrial adhesives and adhesive bonding technology. It discusses the advantages of adhesive bonding over mechanical fastening, including continuous bonding, reduced stress concentrations, and increased design freedom. It also reviews limitations of adhesive bonding such as temperature and chemical resistance. The document describes different types of adhesives and their characteristics, including anaerobics, cyanoacrylates, epoxies, polyurethanes, and others. It emphasizes the importance of designing joints for adhesive bonding and considering factors like joint geometry, adhesive selection, loading conditions, and manufacturing process.
1) The study examined how wear debris in lubricating oil influences rolling contact fatigue life in bearings.
2) Testing found that reducing the filtration level of the oil from 40 μm to 3 μm increased fatigue life by up to 7 times.
3) Analysis of failed bearings showed that early failures, which most influence calculated bearing life, were initiated by wear debris indentations on the surface rather than subsurface fatigue as previously believed.
This paper introduces air bearings. High-speed air bearings offer very specific advantages over other, more conventional bearing technologies. The reason use of air bearing air bearings as it avoid the traditional bearing-related problems of friction, wear, and lubricant handling, and offer distinct advantages in precision positioning and high speed applications. The use of air bearings means tool life can be greatly extended. Air bearings provide extreme radial and axial rotational precision. The factors affecting the performance of the air bearing like friction, wear, stiffness, load capacity. This paper also introduces with the types of air bearing. New air bearing products like flat bearing, air bushing, vacuum preloaded bearings, air bearing slides, radial bearing and its applications in various fields. It also discuss about the advantages and disadvantages of air bearings.
The document discusses surface preparation methods for bonding with industrial adhesives. It emphasizes that surface preparation is critical for achieving a strong bond, as the adhesive must adhere well to the substrates. The types of surface preparation depend on the expected performance requirements, service conditions, and cost considerations. Common preparation methods include degreasing to remove oils and greases, abrading to increase surface area, and special pretreatments like plasma treatment or chemical etching. Thorough cleaning without contamination is important for optimal bonding.
Effects of Tribological Parameters on Slurry Erosion Behaviour of Uncoated an...Sunil Kumar
This paper describes the pioneering work of various researchers in the field of slurry erosion behaviour of uncoated and coated materials in various industrial applications. The present study is focused on the slurry erosion behaviour of ash slurry disposal system of thermal power plants. The key components such as impeller and casing of ash slurry disposal pumps in thermal power plants experience this phenomenon of wear. Tribological parameters such as solid particle concentration, impact velocity of erodent on the target surface, impact angle, erodent particle size and shape, hardness of the striking particles and target material, etc. are responsible for slurry erosion. The research results show that the influence of tribological parameters on the slurry erosion is found to be significant and need to be evaluated and analyzed properly. The slurry erosion can be minimized by proper selection of materials and/or by providing the suitable protective coating on the material which can enhance the surface properties.
Influence of using white cement kiln dust as a mineral filler on hot asphaltIAEME Publication
This document discusses using white cement kiln dust (WCKD) as a mineral filler in hot asphalt concrete mixtures. WCKD is a byproduct of cement production that is usually disposed of, but can provide economic and environmental benefits if used in asphalt mixtures. The document reports on a study that used various percentages of WCKD, alone and combined with cement and limestone, to prepare asphalt mixtures. Standard tests showed that mixtures with WCKD met specifications and performed similarly to mixtures with traditional fillers. The results indicate that using WCKD as a filler can reduce waste and costs for asphalt producers while maintaining quality.
Experimental Test on Gfrp Gratings for Mechanical Properties and Chemical Res...IOSR Journals
This document describes an experimental study that tested the mechanical properties and chemical resistance of glass fiber reinforced plastic (GFRP) gratings. GFRP gratings were manufactured using a hand lay-up process with isopthalic resin and glass fiber rovings. The gratings were then subjected to tensile testing, flexural testing, chemical resistance testing using sulfuric acid and sodium hydroxide, and load bearing testing. The tensile testing found an ultimate tensile strength of 231.985 MPa. Flexural testing found a cross breaking strength of 448.2 N/mm2. Chemical resistance testing showed minimal weight changes (<0.2%) after exposure. Load bearing testing showed the gratings could withstand loads
This document discusses size reduction, which is the process of reducing the size of solid particles. It explains that size reduction is important for processes like grinding gypsum rock or pigments. It then describes how size reduction is achieved through applying pressure to fracture particles along cleavage planes. Finally, it outlines the objectives of size reduction like increasing reaction rates or improving material handling, and lists operating variables that influence the process like moisture content or the reduction ratio.
Centrifugal barrel finishing (CBF) is a high-energy mass finishing process that can produce very refined surfaces on parts in a fraction of the time required by conventional barrel or vibratory finishing. CBF works by mounting barrels on a rotating turret such that as the turret spins, the barrels counter-rotate, subjecting the media and parts inside to high centrifugal forces and sliding motion that quickly remove burrs and create smooth surfaces. CBF is well-suited for precision applications and developing specialized finishes more rapidly than conventional equipment.
It is a final year project report for mechanical engineering. This report is a study on the erosion of various materials using slurry (water and silica) and various parameters which affect that.
Experimental Study on Increasing Strength of Pervious ConcreteIRJET Journal
This document presents the results of an experimental study on increasing the strength of pervious concrete. Pervious concrete allows stormwater to infiltrate into the ground while providing pavement. However, it typically lacks strength compared to traditional concrete. The study tested different mix proportions and the addition of flexural reinforcement to improve strength. Eleven mix designs were tested with varying proportions of fine and coarse aggregates. Cubes were cast and tested for compressive strength after 7 days of curing. The highest average compressive strength of 9.51 MPa was achieved using a 1:2.25:2.25 mix proportion with the addition of aluminum mesh reinforcement. The study concluded that changing aggregate proportions and adding reinforcement can significantly increase the strength of per
IRJET- Effect of Particle and Target Material Characteristics on Erosion Wear...IRJET Journal
This document summarizes research on the effect of various parameters on erosive wear of materials due to solid particle impact. It discusses that erosive wear is influenced by impact parameters like particle velocity and impingement angle, particle properties like size, hardness and density, and target material properties. It reviews studies showing that wear increases with particle velocity, typically as a power law relationship, and is highest at intermediate impingement angles for ductile materials. Particle size effects depend on velocity, with wear increasing until a saturation point. Harder particles cause more wear up to a threshold hardness. Higher particle concentrations may slightly reduce wear. The document analyzes these parameters that influence erosive wear in industrial applications like material conveying.
This document summarizes research on the erosion behavior of stainless steel when exposed to solid particle erosion. Testing was conducted on stainless steel samples at different impact angles (30, 60, 90 degrees), pressures (4-6 kgf/mm2), and standoff distances (100-200mm) between the nozzle and sample. The results showed that erosion rate increased with decreasing impact angle and increasing pressure, with the highest erosion occurring at 30 degrees and highest pressure. Microscopic analysis of eroded surfaces found evidence of plastic deformation and abrasion damage. The research contributes to understanding the erosion resistance of ductile metals under various testing parameters.
Slurry erosion comparison of d gun sprayed stellite-6, cr3 c2-25nicr coatings-2IAEME Publication
This document discusses a study that compares the slurry erosion performance of detonation gun sprayed Stellite-6 and Cr3C2-25NiCr ceramic coatings on a 13Cr4Ni stainless steel substrate under hydro accelerated conditions. Specimens of the coated materials and uncoated substrate were tested using a high speed erosion tester at angles of 30 and 90 degrees. The Stellite-6 coating performed better than the Cr3C2-25NiCr coating and substrate steel at 30 degrees. However, at 90 degrees the substrate steel performed better than the coatings. The document provides details on the materials, coating process, erosion testing method and parameters used in the study.
This document discusses the design and manufacturing of a magneto-rheological fluid assisted damper. It begins with an abstract and introduction on MR fluids and how they can be used in dampers. It then describes the basic working of MR dampers and different types of MR dampers and suspensions. The document provides details on the manufacturing process of MR fluids, including the composition of materials used. It concludes with the methodology used to manufacture the MR fluid, including mixing iron particles, oleic acid, white grease, and paraffin oil at specific weights and mixing speeds.
EXPERIMENTAL STUDY OF SCC BY ADDING POLYPROPYLENE FIBER WITH CASHEW NUT SHELL...IRJET Journal
This document presents an experimental study on the mechanical properties of self-compacting concrete (SCC) with the addition of polypropylene fiber and partial replacement of cement with cashew nut shell ash (CNSA). CNSA was used to replace cement at levels of 5%, 10%, 15%, and 20% and polypropylene fiber was added at 1%. Cubes and cylinders were cast and tested for compressive and split tensile strength at 7 and 28 days. Test results showed that the mix with 10% CNSA replacement and 1% polypropylene fiber addition achieved the highest strengths, exceeding that of the control mix without additions. Therefore, this mix was determined to be the optimum mix proportion studied
IRJET- Friction Stir Welding in Circular PipesIRJET Journal
This document discusses friction stir welding of circular aluminum pipes. Friction stir welding is a solid-state joining technique that uses a rotating tool to plastically deform and join two abutting metal workpieces without melting them. The document examines the effects of tool rotation speed, tool geometry, and process parameters on the resulting weld strength and microstructure. Tensile strength, hardness, and microstructure of friction stir welded aluminum alloy joints are evaluated to determine the optimal welding parameters and conditions. Friction stir welding shows potential for joining pipes in industries such as oil and gas.
This document provides a literature review and overview of rolling processes and power parameters. It discusses key terms related to rolling, the principles of rolling processes, hot rolling and cold rolling, rolling materials, torque in rolling, and power in rolling. The main points are:
- Rolling is a metal forming process that reduces thickness or changes cross-section of a workpiece by compressive forces from rolls.
- Key terms include ingot, bloom, billet, plate, strip, and foil which describe intermediate and final rolled products.
- Hot and cold rolling processes are described along with their effects on material properties.
- Formulas for calculating torque and power in rolling are presented which factor in parameters like rolling
IRJET- Analysis of Alsi10Mg-Quartz Composite Material for a Connecting RodIRJET Journal
This document discusses the analysis of an AlSi10Mg-Quartz composite material for use in connecting rods. Connecting rods are currently made of steel or aluminum alloys but this research aims to develop a composite material to reduce weight. The composite is made with AlSi10Mg as the matrix and quartz as reinforcement, produced using stir casting. Quartz is added in sizes of 10, 20 and 30 microns at compositions of 5, 10 and 15% by weight. The mechanical properties of the composite material are analyzed based on the quartz content. The increased quartz provides improved mechanical properties and microstructure over traditional connecting rod materials like steel and aluminum.
Strength behaviour of foundry sand on modified high strength concreteeSAT Journals
Abstract Metal foundries use a large amount of sand as part of the metal casting process. Foundry industries generally recycle and reuse the used foundry sand many times in casting process. When the sand can no longer be reused in the foundry, it is removed from the foundry and is termed as "foundry waste sand." Like many waste products, foundry sand has beneficial applications to other industries. A mixture of silica sand coated with a thin film of burnt carbon and residual binder with traces of dust is termed as foundry sand. From the previous available literature it was found that replacement of sand by foundry sand by certain initial percentages gives a marginal increase in hardened properties of normal strength concrete. In the present work, fine aggregate is replaced by foundry sand with percentages and tests were performed for hardened properties of modified high strength concrete for all replacement levels. Keywords: Waste Foundry Sand, physical properties, chemical properties, compressive strength, splitting tensile strength and flexural strength
IRJET - Experimental Investigation of Textile Waste on Index and Strength Pro...IRJET Journal
The document experimentally investigates the effect of adding textile waste to expansive red soil in varying percentages for use in flexible pavement construction. Textile waste is added from 10-50% by weight of soil and index properties such as liquid limit, plastic limit, and compaction characteristics are determined. Strength properties including unconfined compressive strength and California bearing ratio are also evaluated. The results show that both index properties and strength generally increase with higher percentages of textile waste added to the soil, indicating improved engineering performance for pavement applications. Based on the test results, a sample pavement design is provided for a road with a design life of 15 years.
Wear characteristics of pure aluminium, al alloy & al-alumina metal mtrix...eSAT Journals
Abstract In this report, the aluminium metal matrix was reinforced with 1.5 wt. % of alumina nano particles using non-contact cavitation method to prepare the metal matrix nano composite. Microstructural investigation was conducted on the worn out samples. It showed uniform distribution of alumina particles in the matrix. Sliding wear behavior of the as-cast MMNC was studied in dry condition, under different test conditions by varying the load (constant and step loads) and the sliding speed (constant and step speeds) using a Multiple Tribo Tester. It was found that resistance to sliding wear improved considerably with the addition of alumina nano particles. FESEM images of the worn out surfaces of pure Al, Al-alloy (duralumin) and MMNC reveal that the MMNC has greater resistance to sliding wear compared to pure aluminium and duralumin. Wear rate increases with increase in load and sliding velocity. Wear rate is more when load and speed are increased in steps. Delamination and abrasion are the dominating types of wear observed. Keywords: Wear rate, Al2O3, MMNC, Duralumin. Coefficient of friction.
This document discusses properties of materials used in self-compacting concrete (SCC). It provides guidelines and typical ranges for SCC mix proportions. Various tests are used to characterize properties like flowability, passing ability, and segregation resistance of SCC. Materials discussed include cement, fly ash, metakaolin, fine aggregate, coarse aggregate. Mixing procedures and properties of constituent materials are also presented.
“STUDY OF CONCRETE CUBE BY USING LATHE SCRAP AND TREATED WASTE WATER”IRJET Journal
This document presents a study on the use of lathe scrap and treated waste water in concrete. The objectives were to study the impact of adding 2% lathe scrap by weight of cement and replacing potable water with treated waste water in concrete. Tests conducted on M20 grade concrete cubes at 7 and 28 days showed increases in compressive, flexural, and split tensile strengths compared to normal concrete. The results indicate that lathe scrap and treated waste water can be used in concrete with potential benefits for construction industry waste reduction and water conservation.
IRJET- Self Compacting Concrete with Replacement of Flyash Aggregate as Fine ...IRJET Journal
This document discusses a study on developing self-compacting concrete (SCC) using fly ash as a replacement for fine aggregate and lightweight expanded clay aggregate (LECA) as a replacement for coarse aggregate. SCC is a concrete that can flow and consolidate under its own weight without vibration. The study aims to investigate the fresh and hardened properties of SCC mixtures containing LECA and fly ash. Test methods for assessing properties like flowability, passing ability, and segregation resistance of fresh SCC are described. The advantages of using LECA and fly ash in SCC are also summarized.
Experimental investigation on effect of mineral admixtures on high performanc...eSAT Journals
Abstract Now a day's high performance concrete is globally used in the infrastructure industry for strong and durable structure, to produced high performance concrete various supplementary cementitious material are used as mineral admixture. This research involves the use of Fly ash, Alccofine and Silica fume at various proportions to enhance the compressive strength of high performance concrete. the investigation was carried out by replacing 10% fly ash along with 17% of alccofine and 10% fly ash along with 17% of silica fume by weight of cementitious material. To cover a wide range of compressive strength of concrete various water binder ratio (W/b) of 0.25, 0.3 and 0.35 were used. The effect of various parameters such as percentage replacement of mineral admixture, water to binder ratio and corresponding compressive strength is studied on fresh and hardened state of concrete. The study mainly consisted of establishing relation between these parameters graphically. Investigation demonstrates that alcofine performs batter than that of silica fume along with fly ash in fresh and harden state of concrete. Keywords: High Performance Concrete, Fly Ash, Alccofine, Silica Fume, workability, Compressive strength
Wear Rate Analysis and Investigation of Alternating Material for Food Mixer B...IRJET Journal
This document summarizes a research study that analyzed the wear rate of different bushing materials for a food mixer. The current bushing material is gunmetal, which has lower mechanical strength and a high wear rate. The study aims to find an alternative material with a lower wear rate. Brass composites with varying percentages of molybdenum disulfide (MoS2) were fabricated and tested. A pin-on-disc tribometer was used to measure and compare the wear rates of the existing gunmetal and proposed composite materials under dry and lubricated conditions. An L9 Taguchi experimental design was used to determine the most influential process parameters on wear rate. The results will help identify a composite material with improved performance
IRJET- Experimental Investigation of Wear Rate using Alternating Material for...IRJET Journal
This document experimentally investigates wear rates of materials for bushings used in food mixers. The existing bushing material is gunmetal, which has a high copper content. Testing on a pin-on-disc tribometer shows the wear rate of gunmetal at various loads and speeds. To reduce wear, a composite of brass and 5% molybdenum disulfide is proposed as an alternative material. Samples of the proposed material are fabricated via powder metallurgy and tested under the same conditions as the existing gunmetal. Test results show the proposed composite has a lower wear rate than the existing gunmetal bushing material across all loads and speeds tested.
IRJET- Mechanical Behaviour of Recycled Coarse and Fine Aggregate in ConcreteIRJET Journal
This document summarizes a study on the mechanical behavior of concrete made with recycled coarse and fine aggregates. The study involved replacing natural aggregates with recycled aggregates at different percentages and testing the concrete mixtures. The following properties were evaluated:
1) Compressive strength, split tensile strength, and modulus of elasticity were tested on concrete cubes and cylinders with 0-80% replacement of fine aggregate. Strength generally decreased as recycled aggregate percentage increased.
2) Durability properties like chloride ion penetration and sulfate resistance were also examined on 100x100x100mm concrete prisms.
3) The results showed that recycled aggregate concrete can achieve mechanical properties similar to normal concrete, indicating recycled aggregates are a viable substitute for natural
Similar to IRJET - Abrasive, Erosive and Corrosive Wear in Slurry Pumps – A Review (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...PIMR BHOPAL
Variable frequency drive .A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply. VFDs are widely used in industrial applications for motor control, providing significant energy savings and precise motor operation.
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELijaia
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.