This document summarizes a study that examined the effect of temperature variation on the mechanical and durability parameters of concrete during its maturation period. Concrete specimens were cast and exposed to regulated temperature settings. The study found that temperature changes can impact concrete's compressive strength, tensile strength, porosity, and durability over time. Graphs showed relationships between temperature, strength development, and maturity period for different concrete grades (M30, M40, M50). The research conclusions can help optimize concrete mix designs and curing procedures for areas with varying temperatures.
Creep is defined as the plastic deformation under sustain load. Creep strain depends
primarily on the duration of sustained loading. It has been widely acknowledged that creep of
concrete is greatly influenced by the surrounding ambient. Creep induces the deflection of the
structural member with time. Hence the study on creep of concrete is necessary to prevent failure. A
concrete cylinder is casted for two different grades and the load of 40% of its compressive strength
is applied constantly. Creep is measured with time. A time - dependent creep is provided in a graph
showing its variation.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Study of mechanical properties of concrete at elevated temperatures a revieweSAT Journals
Abstract Concrete, the second highest consumed material after water in the world, plays a vital role in the construction field because of the versatility in its use. Developments during the last two decades have shown a marked increase in the number of structures involving the long time heating of concrete. In recognition of its importance, many researchers have attempted to investigate the effect of elevated temperature on mechanical properties of concrete. These researchers, during their investigation, used materials with varying combination and different experimental conditions. These materials include cement, different percentages of admixtures like fly ash, silica fume, metakaolin, finely grounded pumice(FGP), group granulated blast furnace slag(GGBS), polypropylene fibre(PP fibre), palm oil fuel ash(POFA), Portland pozzolana cement(PPC), rice husk ash(RHA), different fine and coarse aggregates, super plasticisers, retarders and the conditions included a temperature range of 28oC to 1200oC . The other conditions that were varied are the shapes and sizes of test specimens, curing methods, curing conditions and test methods. The analysis of these investigations and their results are reviewed and presented in this paper. Key words: concrete, mechanical properties, elevated temperature, admixtures, curing methods
REVIEW ON ANALYSIS OF CREEP IN AN ISOTROPIC UNIFORM COMPOSITE CYLINDERijiert bestjournal
The steady state creep in Al- SiCP composite cylinder subjected to internal pressure was investigated. The creep
behavior of the material was described by threshold stress based creep law by assuming a stress exponent of 5.
The effect of size and content of the reinforcement (SiCP), and operating temperature on the stresses and strain
rates in the composite cylinder were investigated. The stresses in the cylinder did not have significant variation
with varying size and content of the reinforcement, and operating temperature. However, the tangential as well
as radial strain rates in the cylinder could be reduced to a significant extent by decreasing size of SiCP,
increasing the content of SiCP and decreasing operating temperature.
IRJET- Experimental Study on Residual Characteristics of Concrete Subjected t...IRJET Journal
The document summarizes research on the effects of elevated temperatures on the physical and mechanical properties of concrete. Specifically, it discusses:
1) An experimental study that subjected concrete cube specimens to temperatures of 250°C, 500°C, and 750°C and then tested them to analyze changes in physical, mechanical, and stiffness characteristics.
2) Previous research that also investigated how properties like compressive strength and elastic modulus of concrete are reduced when exposed to high temperatures.
3) The testing involved heating concrete samples to temperatures from 100°C to 1200°C and then analyzing their residual properties and microstructure. The research aimed to better understand how high temperatures impact fire-resistant design of concrete structures.
IRJET- Study of Microstructure and Surface Mechanical Properties of Electrode...IRJET Journal
This document studies the microstructure and surface mechanical properties of electrodeposited nickel coatings on mild steel using Taguchi and ANOVA methods. Nickel thin film coatings were deposited on mild steel substrates using an electroplating process. The process parameters of voltage, agitation speed, and deposition time were investigated. Microhardness of the coatings was analyzed using Vickers microhardness testing. Surface morphology was examined using SEM. Taguchi's L27 orthogonal array design of experiments was used to study the effects of the parameters on microhardness. Voltage and deposition time were found to be the most influential parameters on microhardness based on signal-to-noise ratio analysis and ANOVA validation.
This document summarizes a study on the effects of elevated temperatures on the compressive and splitting tensile strengths of ultra-high strength concrete. Cubes and cylinders of M100 grade concrete were exposed to temperatures between 50-250°C for durations of 1-4 hours. Testing found that compressive and splitting tensile strengths initially increased with temperature up to 100°C but then decreased with further increases in temperature. The maximum strengths were observed when specimens were heated to 100°C for 1 hour. Understanding how high-strength concrete properties change after fire exposure can help determine the load capacity of damaged structures.
Comparative studies on heat transfer and fluid flow in cored brick and pebble...eSAT Journals
Abstract
The article reports on comparison of transient heat transfer and fluid flow in two different sensible heat storage devices using Computational Fluid Dynamics. The candidate heat storage devices considered were cored brick and pebble bed and air was taken to be the working fluid. Same geometrical, material, porosity and boundary conditions, have been used for both the cored brick and pebble bed heaters, to compare the axial temperature history and pressure drop. The heat storage system comprises alumina, either in form of pebbles of diameter 6.5 mm, packed to a length of 0.455m in a 43mm diameter pipe, or cored brick of 43mm diameter and same length with through holes to have the same porosity (0.48) as that of the former. The conditions at inlet, outlet and lateral surface too have been taken to be same for both the systems. The fluid flow was considered to be incompressible with k-epsilon model to predict turbulence, and the thermo-physical properties of fluid and solid were assumed to remain constant. Simulations carried out for an inlet temperature of 465 K for velocities ranging from 2m/s to 5 m/s revealed that pressure drop in pebble bed to be considerably higher than those in cored brick, while the temperature history exhibited mixed trends.
Keywords: Cored Brick, Pebble Bed and Porosity
Creep is defined as the plastic deformation under sustain load. Creep strain depends
primarily on the duration of sustained loading. It has been widely acknowledged that creep of
concrete is greatly influenced by the surrounding ambient. Creep induces the deflection of the
structural member with time. Hence the study on creep of concrete is necessary to prevent failure. A
concrete cylinder is casted for two different grades and the load of 40% of its compressive strength
is applied constantly. Creep is measured with time. A time - dependent creep is provided in a graph
showing its variation.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Study of mechanical properties of concrete at elevated temperatures a revieweSAT Journals
Abstract Concrete, the second highest consumed material after water in the world, plays a vital role in the construction field because of the versatility in its use. Developments during the last two decades have shown a marked increase in the number of structures involving the long time heating of concrete. In recognition of its importance, many researchers have attempted to investigate the effect of elevated temperature on mechanical properties of concrete. These researchers, during their investigation, used materials with varying combination and different experimental conditions. These materials include cement, different percentages of admixtures like fly ash, silica fume, metakaolin, finely grounded pumice(FGP), group granulated blast furnace slag(GGBS), polypropylene fibre(PP fibre), palm oil fuel ash(POFA), Portland pozzolana cement(PPC), rice husk ash(RHA), different fine and coarse aggregates, super plasticisers, retarders and the conditions included a temperature range of 28oC to 1200oC . The other conditions that were varied are the shapes and sizes of test specimens, curing methods, curing conditions and test methods. The analysis of these investigations and their results are reviewed and presented in this paper. Key words: concrete, mechanical properties, elevated temperature, admixtures, curing methods
REVIEW ON ANALYSIS OF CREEP IN AN ISOTROPIC UNIFORM COMPOSITE CYLINDERijiert bestjournal
The steady state creep in Al- SiCP composite cylinder subjected to internal pressure was investigated. The creep
behavior of the material was described by threshold stress based creep law by assuming a stress exponent of 5.
The effect of size and content of the reinforcement (SiCP), and operating temperature on the stresses and strain
rates in the composite cylinder were investigated. The stresses in the cylinder did not have significant variation
with varying size and content of the reinforcement, and operating temperature. However, the tangential as well
as radial strain rates in the cylinder could be reduced to a significant extent by decreasing size of SiCP,
increasing the content of SiCP and decreasing operating temperature.
IRJET- Experimental Study on Residual Characteristics of Concrete Subjected t...IRJET Journal
The document summarizes research on the effects of elevated temperatures on the physical and mechanical properties of concrete. Specifically, it discusses:
1) An experimental study that subjected concrete cube specimens to temperatures of 250°C, 500°C, and 750°C and then tested them to analyze changes in physical, mechanical, and stiffness characteristics.
2) Previous research that also investigated how properties like compressive strength and elastic modulus of concrete are reduced when exposed to high temperatures.
3) The testing involved heating concrete samples to temperatures from 100°C to 1200°C and then analyzing their residual properties and microstructure. The research aimed to better understand how high temperatures impact fire-resistant design of concrete structures.
IRJET- Study of Microstructure and Surface Mechanical Properties of Electrode...IRJET Journal
This document studies the microstructure and surface mechanical properties of electrodeposited nickel coatings on mild steel using Taguchi and ANOVA methods. Nickel thin film coatings were deposited on mild steel substrates using an electroplating process. The process parameters of voltage, agitation speed, and deposition time were investigated. Microhardness of the coatings was analyzed using Vickers microhardness testing. Surface morphology was examined using SEM. Taguchi's L27 orthogonal array design of experiments was used to study the effects of the parameters on microhardness. Voltage and deposition time were found to be the most influential parameters on microhardness based on signal-to-noise ratio analysis and ANOVA validation.
This document summarizes a study on the effects of elevated temperatures on the compressive and splitting tensile strengths of ultra-high strength concrete. Cubes and cylinders of M100 grade concrete were exposed to temperatures between 50-250°C for durations of 1-4 hours. Testing found that compressive and splitting tensile strengths initially increased with temperature up to 100°C but then decreased with further increases in temperature. The maximum strengths were observed when specimens were heated to 100°C for 1 hour. Understanding how high-strength concrete properties change after fire exposure can help determine the load capacity of damaged structures.
Comparative studies on heat transfer and fluid flow in cored brick and pebble...eSAT Journals
Abstract
The article reports on comparison of transient heat transfer and fluid flow in two different sensible heat storage devices using Computational Fluid Dynamics. The candidate heat storage devices considered were cored brick and pebble bed and air was taken to be the working fluid. Same geometrical, material, porosity and boundary conditions, have been used for both the cored brick and pebble bed heaters, to compare the axial temperature history and pressure drop. The heat storage system comprises alumina, either in form of pebbles of diameter 6.5 mm, packed to a length of 0.455m in a 43mm diameter pipe, or cored brick of 43mm diameter and same length with through holes to have the same porosity (0.48) as that of the former. The conditions at inlet, outlet and lateral surface too have been taken to be same for both the systems. The fluid flow was considered to be incompressible with k-epsilon model to predict turbulence, and the thermo-physical properties of fluid and solid were assumed to remain constant. Simulations carried out for an inlet temperature of 465 K for velocities ranging from 2m/s to 5 m/s revealed that pressure drop in pebble bed to be considerably higher than those in cored brick, while the temperature history exhibited mixed trends.
Keywords: Cored Brick, Pebble Bed and Porosity
IRJET- Comparative Analysis of High Strength Concrete and Normal Strength...IRJET Journal
This document presents a comparative analysis of the structural behavior of high strength concrete (HSC) columns and normal strength concrete (NSC) columns when exposed to fire through an experimental study. Four reinforced concrete columns (three HSC columns and one NSC column) were subjected to concentric loading and exposed to heat in a laboratory furnace according to standard time-temperature curves. The HSC columns exhibited more spalling and faster loss of compressive strength when exposed to fire compared to the NSC column. Higher temperatures within the HSC columns also contributed to their decreased fire resistance relative to the NSC column. The results provide data on the differences in fire resistance between HSC and NSC columns and how loading levels and heating rates
FIRE RESISTANT ANALYSIS OF RC BEAM COLUMN JOINTIRJET Journal
This document summarizes a study that uses finite element analysis to analyze the fire resistant behavior of reinforced concrete beam-column joints. The study models beam-column joints exposed to fire based on the ISO 834 standard fire curve and analyzes the effects of different exposure conditions (2 sides, 3 sides, or 4 sides exposed). It finds that failure occurs more quickly when more sides of the joint are exposed to fire. The study concludes that the number of exposed sides significantly impacts a structure's ability to withstand fire, and that thermal failure criteria are more important than deflection criteria during a fire.
A EXPERIMENTAL STUDY ON SELF COMPACTING CONCRETE WHEN SUBJECTED TO ELEVATED TEMPERATURE
To achieve the SCC mix for M40 grade
To obtain optimum Percentage Replacement of cement by GGBS, FLYASH, Micro cement
To find the Mechanical Properties of SCC when subjected to elevated temperature
To draw the conclusions after conducting the Tests.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
Corrosion resistance performance of fly ash blended cement concreteseSAT Journals
Abstract Durability of reinforced concrete with respect to corrosion of reinforcement is one of the major aspects to be considered in the management of civil infrastructure systems. An accelerated laboratory test method developed at SERC where the concrete specimen containing rebar is subjected to polarization under a constant voltage in a sodium chloride solution. It is found that the current response with time follows that of a typical service life model indicating depassivation and corrosion propagation. Index terms- Materials, cement, super plasticizer, workability, compressive strength etc.
Corrosion resistance performance of fly ash blended cement concreteseSAT Publishing House
1) The document describes an experimental study on the corrosion resistance of reinforced concrete with different percentages of fly ash replacement.
2) An accelerated corrosion test method was used where concrete cylinders containing rebar were subjected to polarization in a sodium chloride solution. This simulated rebar corrosion in marine environments.
3) The test results showed that concretes with 30% fly ash replacement had the highest corrosion resistance, with initiation times of 54 and 63 days for M25 and M30 grade concrete, respectively.
4) Graphs of current over time showed changes in slope indicating the initiation time and time for cracking, which increased with higher percentages of fly ash replacement up to 30%.
IRJET- Review on High Temperature Concrete using Shockwave ApplicationIRJET Journal
The document discusses using shockwaves to improve the fire resistance of concrete. It describes how shockwaves are induced in fresh concrete using a shock tube apparatus. Tests were conducted on concrete subjected to temperatures from 100°C to 700°C for 28 days. The compressive strength of normal concrete was compared to concrete with metakaolin additive and concrete with both metakaolin and induced shockwaves. Results showed that shockwave induction and metakaolin additive can improve the compressive strength retention of concrete exposed to high temperatures.
IRJET- Review on High Temperature Concrete using Shockwave ApplicationIRJET Journal
The document discusses using shockwaves to improve the fire resistance of concrete. It aims to study the effect of inducing shockwaves in concrete using a shock tube apparatus. Tests were conducted on concrete exposed to high temperatures from 100°C to 700°C for 28 days. The performance of normal concrete, shockwave-induced concrete, and concrete with metakaolin or both shockwaves and metakaolin was compared based on compression tests. Previous research found that partially replacing cement with metakaolin or blast furnace slag improved concrete strength, especially at later ages. The inclusion of metakaolin in concrete containing slag prevented early strength loss.
This document discusses using a neural network model to predict the 28-day compressive strength of concrete cured using microwave energy. Concrete cubes were cured for varying delay periods (6-24 hours) and microwave durations at different power levels. Their early compressive strengths were tested and used to train a neural network. 108 such data points were collected and split into training and test sets. The neural network used the delay period, microwave duration, and power level as inputs to predict compressive strength. Results showed the neural network model has potential for further study and implementation in predicting concrete strength from early microwave curing tests.
Comparison of fatigue parameters of alkali activated and ordinary portland ce...eSAT Publishing House
This document compares the fatigue parameters of alkali-activated concrete and ordinary Portland cement concrete. It presents results of static and cyclic fatigue tests on both materials. Under static testing, the compressive strength of alkali-activated concrete was measured over time up to 90 days. Under cyclic fatigue testing, the stress versus number of cycles to failure (S-N curves) were obtained for both concretes in three-point bending tests. The alkali-activated concrete showed a flatter S-N curve with many specimens surviving over 2 million cycles even at high stresses, indicating better fatigue resistance compared to ordinary Portland cement concrete. The results were discussed in terms of using the different concrete types in fatigue-prone applications.
IRJET- Use of Non Destructive Techniques to Analyze Fresh and Hardened State ...IRJET Journal
This document summarizes a study that used non-destructive techniques to analyze the properties of fresh and hardened concrete. Specifically, it used electrical methods to characterize the early-age behavior and setting of fresh concrete mixtures. It also used a combination of ultrasonic testing and AC impedance spectroscopy to analyze the distribution and orientation of fibers in hardened concrete beams. The results showed that the electrical methods could detect the influence of admixtures on setting time. AC impedance spectroscopy effectively characterized fiber orientation in beams and found preferential alignment in the direction of concrete flow. However, ultrasonic testing was not sensitive enough to detect fiber orientation differences at low fiber volumes below 1%.
Experimental Studies on the Prediction of Corrosion Levels in Reinforced TMT ...IRJET Journal
The document summarizes experimental studies on predicting corrosion levels in reinforced TMT bars in normal vibrated concrete (NVC) and self-consolidating concrete (SCC) exposed to a marine environment. Specimens of NVC and SCC with TMT bars embedded were immersed in de-ionized water with varying concentrations of NaCl and MgSO4 for curing periods of 28, 45, 60, and 90 days. Corrosion levels in the TMT bars after curing were then predicted by measuring potential differences between points on the specimens using a saturated calomel electrode and open circuit potential method. The studies aimed to investigate corrosion levels in TMT bars in NVC and SCC exposed to the marine environment
Metamodel techniques to estimate the compressive strength of UHPFRC using var...Shakerqaidi
This document discusses the development of metamodel techniques to estimate the compressive strength of ultra-high performance fiber reinforced concrete (UHPFRC) based on mix proportions and curing temperatures. Four soft computing techniques were developed: nonlinear relationship model, pure quadratic model, M5P-tree model, and artificial neural network model. The artificial neural network model performed best with the lowest error and highest accuracy based on 274 data points analyzing the effect of 11 variables on compressive strength, including curing temperature. The most influential variables were found to be curing temperature, fiber content, and curing time.
IRJET- Fundamentals of Maturity Methods for Estimating Concrete Strength: ReviewIRJET Journal
This document reviews different maturity methods used to predict the compressive strength of concrete based on its temperature history. It discusses two main maturity models - the Nurse-Saul function and the Arrhenius function. The Nurse-Saul function calculates maturity as the sum of time multiplied by temperature above a datum temperature (usually -10°C). The Arrhenius function is based on the concept of activation energy from chemistry and calculates maturity as an integral of time and temperature. The document also reviews past literature on maturity methods and discusses how maturity can be used to estimate in-place concrete strength for purposes like formwork removal or post-tensioning schedules.
The document summarizes research on the erosion-corrosion behavior of WC-Co-Cr cermet coatings applied by thermal spraying. Experiments were conducted exposing the coatings to a liquid-solid jet of 3.5% NaCl solution with silica sand loadings of 200 and 500 mg/l. Electrochemical measurements and surface analysis using SEM were used to understand the corrosion and erosion damage mechanisms. Cathodic protection was applied to isolate the erosion effects. The results showed the WC-Co-Cr coating had higher resistance to erosion-corrosion compared to stainless steel controls. Microstructural characterization revealed the coating had a lamellar structure and composition of WC-12% Co-6% Cr with
Investigation of Tribological Behaviour of GF Filled Peek Composite under the...IJERA Editor
Composite materials have successfully substituted the traditional materials in several light weight and high
strength applications. The reasons why composites are selected for such applications are mainly their high
strength-to-weight ratio, high tensile strength at elevated temperatures, high creep resistance and high
toughness. Therefore minimum Wear of component or part used in machinery is very important factor for the
industry. In this paper the tribological behavior of PEEK (Poly-ether-ether-ketone) composites reinforced by
30% short glass fiber and phosphor bronze were comparatively evaluated on Pin on disc machine. The effect of
three parameters such as temperature, load and sliding distance on Wear loss of PEEK composites reinforced by
30% short glass fiber and phosphor bronze were examined. The detailed mathematical model is simulated by
Minitab 17 and simulation results fit experiment data very well
In this investigation, an effective approach based on Taguchi method, analysis of variance (ANOVA),
multivariable linear regression (MVLR), has been developed to determine the optimum conditions leading to
minimum Wear. Experiments were conducted by varying temperature, load and sliding distance using L9
orthogonal array of Taguchi method. The present work aims at optimizing process parameters to achieve
minimum Wear. Experimental results from the orthogonal array were used as the training data for the MVLR
model to map the relationship between process parameters and Wear. The experiment was conducted on
computerized Pin on Disc machine. It was observed that PEEK 30% Glass Fiber Composite Polymer has
excellent wear resistance compare to Phosphor bronze at elevated temperature.
This document discusses experiments on conduction and breakdown mechanisms in transformer oil. For conduction experiments, three stages were identified prior to breakdown for highly nonuniform fields: 1) a resistive current at low fields, 2) a "tunneling" mechanism leading to rapid current rise as field increases, and 3) current reaching space charge saturation at high fields, with an apparent mobility of 3 x 10-3 cm2 V s. Breakdown shows polarity dependence. Negative needle/plane breakdown voltage reduces 50% at hundreds of mtorr pressure, while positive needle reduces only 10%, indicating the breakdown mechanism does not have a strong gaseous component. Shadowgraphy and electrical measurements support a gas bubble model for cathode-initiated breakdown.
12-2-Publication-Experimental Analysis of Explosive FormingSaeed Jabalamelian
This study numerically simulates and experimentally tests the explosive hydroforming process used to form torispherical heads made of aluminum alloy AA5083. Finite element models using LS-DYNA software were developed to simulate the process, applying the Johnson-Cook and Modified Zerilli-Armstrong constitutive models. The models were verified against experimental tests. The simulation captured most material behaviors under different stress states but did not fully describe the transient zone between tension and compression. The predicted width of the transient rim was smaller than seen experimentally. Overall the blast loading simulation showed good agreement with Cole's relation for underwater detonation of small charges, with 95% accuracy.
IRJET- Study on Self Compacting Concrete using Recycled Aggregate as Part...IRJET Journal
This document presents the results of a study on the effects of adding marble dust and steel fibers to concrete. The study investigated the impact on compressive strength, split tensile strength, and flexural strength. Concrete cubes, cylinders, and beams were cast with varying percentages of marble dust replacing cement and steel fibers added. Testing at 28 days showed that replacing 10% of cement with marble dust and adding up to 1% steel fibers increased the compressive, split tensile, and flexural strengths of the concrete compared to normal concrete without additions. The optimal mix was found to be 10% marble dust and 1% steel fibers.
IRJET- Predicting Fire Effects on Compressive Strength of Normal-Strength Con...IRJET Journal
This document presents a study that uses an artificial neural network (ANN) to predict the residual compressive strength (RCS) of normal-strength concrete after exposure to fire with nanoparticles additives. Experimental data from 156 concrete cube specimens tested at different fire temperatures, exposure times, and levels of nanosilica and nanoclay substitution were used to develop the ANN model. The ANN takes in four input parameters - fire temperature, exposure time, level of nanosilica substitution, and level of nanoclay substitution - to predict the single output of RCS. Results showed good agreement between RCS values predicted by the ANN model and experimental data, and that the ANN performed better than regression analysis. The study aims
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
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This document presents a comparative analysis of the structural behavior of high strength concrete (HSC) columns and normal strength concrete (NSC) columns when exposed to fire through an experimental study. Four reinforced concrete columns (three HSC columns and one NSC column) were subjected to concentric loading and exposed to heat in a laboratory furnace according to standard time-temperature curves. The HSC columns exhibited more spalling and faster loss of compressive strength when exposed to fire compared to the NSC column. Higher temperatures within the HSC columns also contributed to their decreased fire resistance relative to the NSC column. The results provide data on the differences in fire resistance between HSC and NSC columns and how loading levels and heating rates
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A EXPERIMENTAL STUDY ON SELF COMPACTING CONCRETE WHEN SUBJECTED TO ELEVATED TEMPERATURE
To achieve the SCC mix for M40 grade
To obtain optimum Percentage Replacement of cement by GGBS, FLYASH, Micro cement
To find the Mechanical Properties of SCC when subjected to elevated temperature
To draw the conclusions after conducting the Tests.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
Corrosion resistance performance of fly ash blended cement concreteseSAT Journals
Abstract Durability of reinforced concrete with respect to corrosion of reinforcement is one of the major aspects to be considered in the management of civil infrastructure systems. An accelerated laboratory test method developed at SERC where the concrete specimen containing rebar is subjected to polarization under a constant voltage in a sodium chloride solution. It is found that the current response with time follows that of a typical service life model indicating depassivation and corrosion propagation. Index terms- Materials, cement, super plasticizer, workability, compressive strength etc.
Corrosion resistance performance of fly ash blended cement concreteseSAT Publishing House
1) The document describes an experimental study on the corrosion resistance of reinforced concrete with different percentages of fly ash replacement.
2) An accelerated corrosion test method was used where concrete cylinders containing rebar were subjected to polarization in a sodium chloride solution. This simulated rebar corrosion in marine environments.
3) The test results showed that concretes with 30% fly ash replacement had the highest corrosion resistance, with initiation times of 54 and 63 days for M25 and M30 grade concrete, respectively.
4) Graphs of current over time showed changes in slope indicating the initiation time and time for cracking, which increased with higher percentages of fly ash replacement up to 30%.
IRJET- Review on High Temperature Concrete using Shockwave ApplicationIRJET Journal
The document discusses using shockwaves to improve the fire resistance of concrete. It describes how shockwaves are induced in fresh concrete using a shock tube apparatus. Tests were conducted on concrete subjected to temperatures from 100°C to 700°C for 28 days. The compressive strength of normal concrete was compared to concrete with metakaolin additive and concrete with both metakaolin and induced shockwaves. Results showed that shockwave induction and metakaolin additive can improve the compressive strength retention of concrete exposed to high temperatures.
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The document discusses using shockwaves to improve the fire resistance of concrete. It aims to study the effect of inducing shockwaves in concrete using a shock tube apparatus. Tests were conducted on concrete exposed to high temperatures from 100°C to 700°C for 28 days. The performance of normal concrete, shockwave-induced concrete, and concrete with metakaolin or both shockwaves and metakaolin was compared based on compression tests. Previous research found that partially replacing cement with metakaolin or blast furnace slag improved concrete strength, especially at later ages. The inclusion of metakaolin in concrete containing slag prevented early strength loss.
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This document compares the fatigue parameters of alkali-activated concrete and ordinary Portland cement concrete. It presents results of static and cyclic fatigue tests on both materials. Under static testing, the compressive strength of alkali-activated concrete was measured over time up to 90 days. Under cyclic fatigue testing, the stress versus number of cycles to failure (S-N curves) were obtained for both concretes in three-point bending tests. The alkali-activated concrete showed a flatter S-N curve with many specimens surviving over 2 million cycles even at high stresses, indicating better fatigue resistance compared to ordinary Portland cement concrete. The results were discussed in terms of using the different concrete types in fatigue-prone applications.
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Experimental Studies on the Prediction of Corrosion Levels in Reinforced TMT ...IRJET Journal
The document summarizes experimental studies on predicting corrosion levels in reinforced TMT bars in normal vibrated concrete (NVC) and self-consolidating concrete (SCC) exposed to a marine environment. Specimens of NVC and SCC with TMT bars embedded were immersed in de-ionized water with varying concentrations of NaCl and MgSO4 for curing periods of 28, 45, 60, and 90 days. Corrosion levels in the TMT bars after curing were then predicted by measuring potential differences between points on the specimens using a saturated calomel electrode and open circuit potential method. The studies aimed to investigate corrosion levels in TMT bars in NVC and SCC exposed to the marine environment
Metamodel techniques to estimate the compressive strength of UHPFRC using var...Shakerqaidi
This document discusses the development of metamodel techniques to estimate the compressive strength of ultra-high performance fiber reinforced concrete (UHPFRC) based on mix proportions and curing temperatures. Four soft computing techniques were developed: nonlinear relationship model, pure quadratic model, M5P-tree model, and artificial neural network model. The artificial neural network model performed best with the lowest error and highest accuracy based on 274 data points analyzing the effect of 11 variables on compressive strength, including curing temperature. The most influential variables were found to be curing temperature, fiber content, and curing time.
IRJET- Fundamentals of Maturity Methods for Estimating Concrete Strength: ReviewIRJET Journal
This document reviews different maturity methods used to predict the compressive strength of concrete based on its temperature history. It discusses two main maturity models - the Nurse-Saul function and the Arrhenius function. The Nurse-Saul function calculates maturity as the sum of time multiplied by temperature above a datum temperature (usually -10°C). The Arrhenius function is based on the concept of activation energy from chemistry and calculates maturity as an integral of time and temperature. The document also reviews past literature on maturity methods and discusses how maturity can be used to estimate in-place concrete strength for purposes like formwork removal or post-tensioning schedules.
The document summarizes research on the erosion-corrosion behavior of WC-Co-Cr cermet coatings applied by thermal spraying. Experiments were conducted exposing the coatings to a liquid-solid jet of 3.5% NaCl solution with silica sand loadings of 200 and 500 mg/l. Electrochemical measurements and surface analysis using SEM were used to understand the corrosion and erosion damage mechanisms. Cathodic protection was applied to isolate the erosion effects. The results showed the WC-Co-Cr coating had higher resistance to erosion-corrosion compared to stainless steel controls. Microstructural characterization revealed the coating had a lamellar structure and composition of WC-12% Co-6% Cr with
Investigation of Tribological Behaviour of GF Filled Peek Composite under the...IJERA Editor
Composite materials have successfully substituted the traditional materials in several light weight and high
strength applications. The reasons why composites are selected for such applications are mainly their high
strength-to-weight ratio, high tensile strength at elevated temperatures, high creep resistance and high
toughness. Therefore minimum Wear of component or part used in machinery is very important factor for the
industry. In this paper the tribological behavior of PEEK (Poly-ether-ether-ketone) composites reinforced by
30% short glass fiber and phosphor bronze were comparatively evaluated on Pin on disc machine. The effect of
three parameters such as temperature, load and sliding distance on Wear loss of PEEK composites reinforced by
30% short glass fiber and phosphor bronze were examined. The detailed mathematical model is simulated by
Minitab 17 and simulation results fit experiment data very well
In this investigation, an effective approach based on Taguchi method, analysis of variance (ANOVA),
multivariable linear regression (MVLR), has been developed to determine the optimum conditions leading to
minimum Wear. Experiments were conducted by varying temperature, load and sliding distance using L9
orthogonal array of Taguchi method. The present work aims at optimizing process parameters to achieve
minimum Wear. Experimental results from the orthogonal array were used as the training data for the MVLR
model to map the relationship between process parameters and Wear. The experiment was conducted on
computerized Pin on Disc machine. It was observed that PEEK 30% Glass Fiber Composite Polymer has
excellent wear resistance compare to Phosphor bronze at elevated temperature.
This document discusses experiments on conduction and breakdown mechanisms in transformer oil. For conduction experiments, three stages were identified prior to breakdown for highly nonuniform fields: 1) a resistive current at low fields, 2) a "tunneling" mechanism leading to rapid current rise as field increases, and 3) current reaching space charge saturation at high fields, with an apparent mobility of 3 x 10-3 cm2 V s. Breakdown shows polarity dependence. Negative needle/plane breakdown voltage reduces 50% at hundreds of mtorr pressure, while positive needle reduces only 10%, indicating the breakdown mechanism does not have a strong gaseous component. Shadowgraphy and electrical measurements support a gas bubble model for cathode-initiated breakdown.
12-2-Publication-Experimental Analysis of Explosive FormingSaeed Jabalamelian
This study numerically simulates and experimentally tests the explosive hydroforming process used to form torispherical heads made of aluminum alloy AA5083. Finite element models using LS-DYNA software were developed to simulate the process, applying the Johnson-Cook and Modified Zerilli-Armstrong constitutive models. The models were verified against experimental tests. The simulation captured most material behaviors under different stress states but did not fully describe the transient zone between tension and compression. The predicted width of the transient rim was smaller than seen experimentally. Overall the blast loading simulation showed good agreement with Cole's relation for underwater detonation of small charges, with 95% accuracy.
IRJET- Study on Self Compacting Concrete using Recycled Aggregate as Part...IRJET Journal
This document presents the results of a study on the effects of adding marble dust and steel fibers to concrete. The study investigated the impact on compressive strength, split tensile strength, and flexural strength. Concrete cubes, cylinders, and beams were cast with varying percentages of marble dust replacing cement and steel fibers added. Testing at 28 days showed that replacing 10% of cement with marble dust and adding up to 1% steel fibers increased the compressive, split tensile, and flexural strengths of the concrete compared to normal concrete without additions. The optimal mix was found to be 10% marble dust and 1% steel fibers.
IRJET- Predicting Fire Effects on Compressive Strength of Normal-Strength Con...IRJET Journal
This document presents a study that uses an artificial neural network (ANN) to predict the residual compressive strength (RCS) of normal-strength concrete after exposure to fire with nanoparticles additives. Experimental data from 156 concrete cube specimens tested at different fire temperatures, exposure times, and levels of nanosilica and nanoclay substitution were used to develop the ANN model. The ANN takes in four input parameters - fire temperature, exposure time, level of nanosilica substitution, and level of nanoclay substitution - to predict the single output of RCS. Results showed good agreement between RCS values predicted by the ANN model and experimental data, and that the ANN performed better than regression analysis. The study aims
Similar to STUDY OF EFFECT OF TEMPERATURE VARIATION ON CONCRETE PARAMETERS OF CONCRETE DURING MATURITY PERIOD (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.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.