Abstract
Die Casting is the manufacturing process by which a liquid material is pressurized in to the mould, which contains a hallow
cavity of the desired shape, and then molten metal is allowed to solidify. The solidified part is known as casting which is ejected
or broken out to complete the process. Objective in this project is to develop tools, dies and gating system. Identify defects such as
gas defects, shrinkage cavities, and mould material defects, pouring material defects, metallurgical defects etc. and take measures
to reduce flaws by using CAE software. To reduce the amount airs entrapped in the mould by changing the gating system, runner
and overflow location and optimize the gating system and process parameters for best quality product and improved productivity.
Defects can be formed easily at critical location during pressure die casting of aluminium alloy part. It has defective effect on the
casting. Mould filling and solidification process of a part was simulated using Z-cast software.
Key Words: Casting, HPDC, Z-cast, CAE Software, Simulation.
PPT on fully study about DIE CASTING by M.M.RAFIK.M.M. RAFIK
In this presentation following parameters like Introduction,
History of casting,
Types of Die casting,
Types of Dies are used in Die casting.
Possible Defects in Die casting.
Minimum recommended wall thickness.
Design Rules in Die casting.
Advantages & Disadvantages of die casting.
covered by M.M.RAFIK.
this presentation provides you the knowledge releated to basic components and working of various types of welding which is known by every mechanical engineer hope you like....
casting introduction, steps involved in casting,gating system,gates,pattern, patterns allowances, advantages and disadvantages of casting process and applications of casting process
Our design department, technologically advanced metal fabrication machines, and our highly-skilled metal production team allow us to produce close-tolerance metal components to meet your needs for customized metal products that can be replicated with speed and accuracy for your current and future projects.
An **unconventional machining process** (or **non-traditional machining process**) is a special type of **machining process**in which there is no direct contact between the tool and the workpiece
Materials for Engineering 20ME11T DTE Karnataka C-20 syllabus THANMAY JS
Unit 1 Class notes
1.1 Classification of Engineering Material
1.2 Structureofmetal-unit cell,BCC,FCCandHCP
structures
1.3 Types of microscopes
1.4 Specimen preparation procedure
1.5 Properties of metals-Physical-mechanical-
Thermal properties
Slides accompanying 2.008x* video module on Casting, Prof. John Hart, MIT, 2016.
*Fundamentals of Manufacturing Processes on edX: https://www.edx.org/course/fundamentals-manufacturing-processes-mitx-2-008x
PPT on fully study about DIE CASTING by M.M.RAFIK.M.M. RAFIK
In this presentation following parameters like Introduction,
History of casting,
Types of Die casting,
Types of Dies are used in Die casting.
Possible Defects in Die casting.
Minimum recommended wall thickness.
Design Rules in Die casting.
Advantages & Disadvantages of die casting.
covered by M.M.RAFIK.
this presentation provides you the knowledge releated to basic components and working of various types of welding which is known by every mechanical engineer hope you like....
casting introduction, steps involved in casting,gating system,gates,pattern, patterns allowances, advantages and disadvantages of casting process and applications of casting process
Our design department, technologically advanced metal fabrication machines, and our highly-skilled metal production team allow us to produce close-tolerance metal components to meet your needs for customized metal products that can be replicated with speed and accuracy for your current and future projects.
An **unconventional machining process** (or **non-traditional machining process**) is a special type of **machining process**in which there is no direct contact between the tool and the workpiece
Materials for Engineering 20ME11T DTE Karnataka C-20 syllabus THANMAY JS
Unit 1 Class notes
1.1 Classification of Engineering Material
1.2 Structureofmetal-unit cell,BCC,FCCandHCP
structures
1.3 Types of microscopes
1.4 Specimen preparation procedure
1.5 Properties of metals-Physical-mechanical-
Thermal properties
Slides accompanying 2.008x* video module on Casting, Prof. John Hart, MIT, 2016.
*Fundamentals of Manufacturing Processes on edX: https://www.edx.org/course/fundamentals-manufacturing-processes-mitx-2-008x
Simulation of Deep-Drawing Process of Large Panelstheijes
The article deals with the analysis of formability of deep-drawing DC06 steel sheets. The aim of the investigations is to verify possibilities of formability of sheet metal with thickness of 0.85 mm. The mechanical parameters of the sheets have been determined in uniaxial tensile and bulge tests. The numerical simulations using AUTOFORM has been carried out for two drawpiece models. Obtained results can be used during the simulation of real forming process.
Design of ‘plastic injection mold’ for an ‘air vent bezel’ through flow analy...eSAT Journals
Abstract Designer's of plastic injection Molds need to study from this point of view, the type of Mold to be designed, the physical Mold orientation, the dimensions for each of the element in the Mold, the location of the gate, runner, requirement of insert, draft angle requirement, shrinkage factor, location of cooling channels. Design can also be simplified by using standardized parts of the mold such as ejector pins. By eliminating the obstruction to smooth flow of plastic a good of quality component can be achieved. The effort of this thesis work is to find out the nuances in the Plastic Injection Mold Design while borrowing the inputs from the Flow Analysis (CAE) conducted for the 'Air vent bezel' to study the behavior of the Melt during flow. The Mold Design would incorporate suitable checking to ensure the best quality product in terms of `defect-free’ output. This thesis work consist methodology of plastic injection molding process, material requirement, how to overcome weld mark, shrinkage etc to satisfactorily assemble the component. Keywords: Draft angle, Shrinkage, CAE, weld mark
A practical approach to eliminate defects in gravity die cast al alloy castin...eSAT Journals
Abstract
This paper deals with elimination of defects in aluminium alloy castings produced by gravity die casting process. The main intention of work is to investigate the defects and improve quality of a gravity die cast component using Computer Aided Casting Simulation Software. In this study an industrial gravity casting die is used which was producing defective components. The die and components produced by the die are studied to eliminate the defects using virtual simulations. The defects in the components are identified to be solidification shrinkage, cracks, unfilled riser and incomplete mould cavity. The reasons for the defects are analyzed as either improper selection of process parameters, or improper design of gating and risering system. SOLIDCast simulation software is used for simulating the solidification process of casting and visualizing outputs showing possible problematic areas or defects which may occur in the cast product. The work is carried out in two stages. In first stage, few test castings are produced by modifying the process parameters (pouring temperature, pouring time, pre heat and alloy type) and results are compared with simulation results produced using same parameters. The pouring and simulation results are observed to be in good accordance with each other. In second stage, number of virtual iterations of casting is performed by changing riser dimensions. It was found from the simulation results that riser with 35mm diameter is required to produce casting with zero defects. The die is modified accordingly with the simulation results and metal is poured. The castings produced are observed to be sound and contain no defects; and also it is verified that solidification simulation helps in locating the defects, eliminating them and ultimately improving the quality of castings without any shop-floor trails.
Keywords: Aluminum-Alloys, Casting Defects, Gravity Die Casting, Material Density and SOLIDCast Simulation
Design and Analysis of Ceiling Cable Holder Baseijtsrd
Injection moulds are classified into two types based on runner design i.e. Cold runner moulds and Runner less moulds i.e. hot runner moulds. In cold runner moulds, for multi cavity and multi point injection moulds, there is wreckage of material in runner area. Also wastage of material is more than component weight. To overcome the above problem, the technique used is hot Runner moulds. Hot runner mould is one of the improved manufacturing techniques for multi cavity type moulds. These types of moulds are commonly used for large production rate. While producing plastic components using normal standard multi cavity mould, we are facing the problems like partial filling, cavities in components, less product quality, injection pressure and temperature reduction and war page etc. Thus we are redesigning the holder base by doing some modification in and this will be beneficial for our using purpose. We are making design of the component, mould flow analysis using software Solid works. Nitish Kumar Mishra | Prof. Vaibhav Bankar ""Design and Analysis of Ceiling Cable Holder Base"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23840.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23840/design-and-analysis-of-ceiling-cable-holder-base/nitish-kumar-mishra
This project deals with the modeling of cooler tank parametric model as per the client requirement. Finding the best manufacturing process preparing mould base for the same, analyzing different manufacturing process by doing CNC program by changing milling parameters (feed, speed, cutters….).So that optimum parameters for manufacturing will be suggested which is useful to reduce the costs and efforts. Plastic flow analysis will be conducted to check the material flow and filling. So that reduction in the pre-machining cost will be done by rectifying the problem. FEM Based analysis will be conducted on mould structure to reduce weight of the mould. And thermal analysis will be conducted to suggest optimized cooling channel design. Modeling, mould base preparation, manufacturing, cnc programming will be done
This project deals with the modeling of cooler tank parametric model as per the client requirement. Finding the best manufacturing process preparing mould base for the same, analyzing different manufacturing process by doing CNC program by changing milling parameters (feed, speed, cutters….).So that optimum parameters for manufacturing will be suggested which is useful to reduce the costs and efforts. Plastic flow analysis will be conducted to check the material flow and filling. So that reduction in the pre-machining cost will be done by rectifying the problem. FEM Based analysis will be conducted on mould structure to reduce weight of the mould. And thermal analysis will be conducted to suggest optimized cooling channel design. Modeling, mould base preparation, manufacturing, cnc programming will be done
Sand casting conventional and rapid prototyping manufacturing approacheseSAT Publishing House
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
DESIGN OF MOULD TOOL & COOLING CHANNEL OPTIMIZATION OF REMOTE CONTROL TOP PANELIjripublishers Ijri
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are
typically organic polymers of high molecular mass, but they often contain other substances. They are usually synthetic,
most commonly derived from petrochemicals, but many are partially natural.
Molding is the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or
matrix. This itself may have been made using a pattern or model of the final object.
Cooling channels are used in mold tool to reduce the temperature of the object to help molten material to solidify quickly
before the ejection. It is quite useful to increase the production rate.
DESIGN OF MOULD TOOL & COOLING CHANNEL OPTIMIZATION OF REMOTE CONTROL TOP PANELIjripublishers Ijri
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are
typically organic polymers of high molecular mass, but they often contain other substances. They are usually synthetic,
most commonly derived from petrochemicals, but many are partially natural.
Molding is the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or
matrix. This itself may have been made using a pattern or model of the final object.
Cooling channels are used in mold tool to reduce the temperature of the object to help molten material to solidify quickly
before the ejection. It is quite useful to increase the production rate.
The aim of this project work is to design mold structure and optimize cooling channel system to reduce effect of warpage
of remote control top panel.
A Design and Analysis of Two Plate Injection Mould Tool For Wi-Fi RouterTherm...EditorJST
This A Wi-Fi router is a device that performs the function of a wireless access point, it is used to provide
access to the internet or a private computer. It is the hardware device that provide basic infrastructure for a home
or small office network.Proposed to make a single impression semi-automatic family mould to design top and
bottom cover for Wi-Fi router to make it more aesthetic, to reduce material cost, better heat dissipation, and to
reduce the tooling cost, to make the product more competitive in the market.It is proposed select the suitable plastic
material, to modify the existing plastic product design and to develop a suitable two plate family mould of one
impression each using SIEMENS NX software. It is also proposed to make detailing of mould parts and its assembly
for manufacturing using SIEMENS NX software. The analysis was done in AUTODESK MOLDFLOW. The mould
cost, raw material cost and processing cost per component are to be estimated to find the cost per component and to
compare it with the existing component part.
Similar to Process optimization of pressure die casting to eliminate defect using cae software (20)
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
Abstract
Soil stabilization has proven to be one of the oldest techniques to improve the soil properties. Literature review conducted revealed
that uses of natural inorganic stabilizers are found to be one of the best options for soil stabilization. In this regard an attempt has
been made to evaluate the influence of RBI-81 stabilizer on properties of black cotton soil through laboratory investigations. Black
cotton soil with varying percentages of RBI-81 viz., 0, 0.5, 1, 1.5, 2, and 2.5 percent were studied for moisture density relationships
and strength behaviour of soils. Also the effect of curing period was evaluated as literature review clearly emphasized the strength
gain of soils stabilized with RBI-81 over a period of time. The results obtained shows that the unconfined compressive strength of
specimens treated with RBI-81 increased approximately by 250% for a curing period of 28 days as compared to virgin soil. Further
the CBR value improved approximately by 400%. The studies indicated an increasing trend for soil strength behaviour with
increasing percentage of RBI-81 suggesting its potential applications in soil stabilization.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
Abstract
Increase in traffic along with heavier magnitude of wheel loads cause rapid deterioration in pavements. There is a need to improve
density, strength of soil subgrade and other pavement layers. In this study an attempt is made to improve the properties of locally
available loamy soil using twin approaches viz., i) increasing the compaction of soil and ii) treating the soil with chemical stabilizer.
Laboratory studies are carried out on both untreated and treated soil samples compacted by different compaction efforts. Studies
show that increase in compaction effort results in increase in density of soil. However in soil treated with chemical stabilizer, rate of
increase in density is not significant. The soil treated with chemical stabilizer exhibits improvement in both strength and performance
properties.
Keywords: compaction, density, subgradestabilization, resilient modulus
Geographical information system (gis) for water resources managementeSAT Journals
Abstract
Water resources projects are inherited with overlapping and at times conflicting objectives. These projects are often of varied sizes
ranging from major projects with command areas of millions of hectares to very small projects implemented at the local level. Thus,
in all these projects there is seldom proper coordination which is essential for ensuring collective sustainability.
Integrated watershed development and management is the accepted answer but in turn requires a comprehensive framework that can
enable planning process involving all the stakeholders at different levels and scales is compulsory. Such a unified hydrological
framework is essential to evaluate the cause and effect of all the proposed actions within the drainage basins.
The present paper describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) which is
intended to meet the specific information needs of the various line departments of a typical State connected with water related aspects.
The HIS consist of a hydrologic information database coupled with tools for collating primary and secondary data and tools for
analyzing and visualizing the data and information. The HIS also incorporates hydrological model base for indirect assessment of
various entities of water balance in space and time. The framework would be maintained and updated to reflect fully the most
accurate ground truth data and the infrastructure requirements for planning and management.
Keywords: Hydrological Information System (HIS); WebGIS; Data Model; Web Mapping Services
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
Abstract
This paper presents an outlook on experimental behavior and a comparison with predicted formula on the behaviour of circular
concentrically loaded self-consolidating fibre reinforced concrete filled steel tube columns (HSSCFRC). Forty-five specimens were
tested. The main parameters varied in the tests are: (1) percentage of fiber (2) tube diameter or width to wall thickness ratio (D/t
from 15 to 25) (3) L/d ratio from 2.97 to 7.04 the results from these predictions were compared with the experimental data. The
experimental results) were also validated in this study.
Keywords: Self-compacting concrete; Concrete-filled steel tube; axial load behavior; Ultimate capacity.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
the design of flat slab is to consider only gravity forces; this method ignores the effect of punching shear due to unbalanced moments
at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
Keywords: Flat slabs, punching shear, unbalanced moment.
Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
Abstract
Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
study on dynamic behavior of circular cylindrical towers can be carried out to study the effect of depth of submergence, wall thickness
and slenderness ratio, and also effect on tower considering dynamic analysis for time history function of different soil condition and
by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
dam
Key words: Hydrodynamic mass, Depth of submergence, Reservoir, Time history analysis,
Evaluation of operational efficiency of urban road network using travel time ...eSAT Journals
Abstract
Efficiency of the road network system is analyzed by travel time reliability measures. The study overlooks on an important measure of
travel time reliability and prioritizing Tiruchirappalli road network. Traffic volume and travel time were collected using license plate
matching method. Travel time measures were estimated from average travel time and 95th travel time. Effect of non-motorized vehicle
on efficiency of road system was evaluated. Relation between buffer time index and traffic volume was created. Travel time model has
been developed and travel time measure was validated. Then service quality of road sections in network were graded based on
travel time reliability measures.
Keywords: Buffer Time Index (BTI); Average Travel Time (ATT); Travel Time Reliability (TTR); Buffer Time (BT).
Estimation of surface runoff in nallur amanikere watershed using scs cn methodeSAT Journals
Abstract
The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
ridge line to stream outlet. The per capita availability of land for cultivation has been decreasing over the years. Therefore, water and
the related land resources must be developed, utilized and managed in an integrated and comprehensive manner. Remote sensing and
GIS techniques are being increasingly used for planning, management and development of natural resources. The study area, Nallur
Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
Keywords: Watershed, Nallur watershed, Surface runoff, Rainfall-Runoff, SCS-CN, Remote Sensing, GIS.
Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
Abstract
Land and water are the two vital natural resources, the optimal management of these resources with minimum adverse environmental
impact are essential not only for sustainable development but also for human survival. Satellite remote sensing with geographic
information system has a pragmatic approach to map and generate spatial input layers of predicting response behavior and yield of
watershed. Hence, in the present study an attempt has been made to understand the hydrological process of the catchment at the
watershed level by drawing the inferences from moprhometric analysis and runoff. The study area chosen for the present study is
Yagachi catchment situated in Chickamaglur and Hassan district lies geographically at a longitude 75⁰52’08.77”E and
13⁰10’50.77”N latitude. It covers an area of 559.493 Sq.km. Morphometric analysis is carried out to estimate morphometric
parameters at Micro-watershed to understand the hydrological response of the catchment at the Micro-watershed level. Daily runoff
is estimated using USDA SCS curve number model for a period of 10 years from 2001 to 2010. The rainfall runoff relationship of the
study shows there is a positive correlation.
Keywords: morphometric analysis, runoff, remote sensing and GIS, SCS - method
-
Effect of variation of plastic hinge length on the results of non linear anal...eSAT Journals
Abstract The nonlinear Static procedure also well known as pushover analysis is method where in monotonically increasing loads are applied to the structure till the structure is unable to resist any further load. It is a popular tool for seismic performance evaluation of existing and new structures. In literature lot of research has been carried out on conventional pushover analysis and after knowing deficiency efforts have been made to improve it. But actual test results to verify the analytically obtained pushover results are rarely available. It has been found that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. Initial study is carried out by considering user defined hinge properties and default hinge length. Attempt is being made to assess the variation of pushover analysis results by considering user defined hinge properties and various hinge length formulations available in literature and results compared with experimentally obtained results based on test carried out on a G+2 storied RCC framed structure. For the present study two geometric models viz bare frame and rigid frame model is considered and it is found that the results of pushover analysis are very sensitive to geometric model and hinge length adopted. Keywords: Pushover analysis, Base shear, Displacement, hinge length, moment curvature analysis
Effect of use of recycled materials on indirect tensile strength of asphalt c...eSAT Journals
Abstract
Depletion of natural resources and aggregate quarries for the road construction is a serious problem to procure materials. Hence
recycling or reuse of material is beneficial. On emphasizing development in sustainable construction in the present era, recycling of
asphalt pavements is one of the effective and proven rehabilitation processes. For the laboratory investigations reclaimed asphalt
pavement (RAP) from NH-4 and crumb rubber modified binder (CRMB-55) was used. Foundry waste was used as a replacement to
conventional filler. Laboratory tests were conducted on asphalt concrete mixes with 30, 40, 50, and 60 percent replacement with RAP.
These test results were compared with conventional mixes and asphalt concrete mixes with complete binder extracted RAP
aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
Keywords: Reclaimed asphalt pavement, Foundry waste, Recycling, Marshall Stability, Indirect tensile strength.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
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TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
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Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Process optimization of pressure die casting to eliminate defect using cae software
1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 05 Issue: 01 | Jan-2016, Available @ http://www.ijret.org 155
PROCESS OPTIMIZATION OF PRESSURE DIE CASTING TO
ELIMINATE DEFECT USING CAE SOFTWARE
Vinod V Rampur1
Assistant professor, Department of mechanical engineering, PESITM Shimoga, Karnataka, India
Abstract
Die Casting is the manufacturing process by which a liquid material is pressurized in to the mould, which contains a hallow
cavity of the desired shape, and then molten metal is allowed to solidify. The solidified part is known as casting which is ejected
or broken out to complete the process. Objective in this project is to develop tools, dies and gating system. Identify defects such as
gas defects, shrinkage cavities, and mould material defects, pouring material defects, metallurgical defects etc. and take measures
to reduce flaws by using CAE software. To reduce the amount airs entrapped in the mould by changing the gating system, runner
and overflow location and optimize the gating system and process parameters for best quality product and improved productivity.
Defects can be formed easily at critical location during pressure die casting of aluminium alloy part. It has defective effect on the
casting. Mould filling and solidification process of a part was simulated using Z-cast software.
Key Words: Casting, HPDC, Z-cast, CAE Software, Simulation.
--------------------------------------------------------------------***----------------------------------------------------------------------
1. INTRODUCTION
Die Casting is the manufacturing process by which a liquid
material is pressurized in to the mould, which contains a
hallow cavity of the desired shape, and then molten metal is
allowed to solidify. The die casting alloys ranges from those
of low fusion alloys: Tin, Lead and Zinc. High fusion alloys:
Aluminium, Magnesium and Copper. For low fusion alloys
it is possible to employ hot chamber machines, high fusion
alloys employ cold chamber machines.
High Pressure Die Casting (HPDC) suitable for the
production of large numbers of small and medium size
components requiring high dimensional accuracy and
complex geometry and also used for low cost components.
2. OBJECTIVES
1. To develop tools, dies and gating system.
2. Identify defects such as gas defects, shrinkage cavities,
mould material defects, pouring material defects and
metallurgical defects.
3. To reduce the amount air entrapped in the mould by
changing the gating system and runner riser location.
4. The analysis is carried out for the filling rate and the
solidification rate. In the filling analysis it is observed
that all the intricate shapes are filled and is compensated
with suitable overflows.
5. Thus the project involves the design and analysis of the
entire tool taking into account the various factors that
might affect the functionality of the tool. Also the
manufacturing details and the defects occurring during
the process are studied and optimized.
3. CASTING SIMULATION
Computer aided design and simulation of casting were once
considered today it has become an integral part of foundry
operations, necessary to achieve consistently high quality
castings with optimal yield.
All new and expanding foundries are planning casting
simulation as an essential facility like melting and moulding
units. A recent survey of maximum foundries using
CAD/CAM and simulation to reduced the average lead time
for casting of particular product.
3.1. NEED FOR SIMULATION
Casting simulation should be used only when one of the
following three factors can be justified, they are; Cost
benefits obtained by casting simulation can be estimated,
they are,
Improve Quality of product: Improve the quality
means decrease defect product and to meet desired
properties.
Improvement in production: Reduce cost per each
casting to improve the production rate.
Product Development: By using some simulation
software to reduce virtual trails and improvement in
development of casting.
3.2. SETTING UP A SIMULATION FACILITY
Three types of resources are required for setting up a casting
simulation facility i.e., hardware, software and human ware.
The choice of hardware is dependent on software. The
choice of software is dependent on the requirement of the
foundry and the person available for running the software.
2. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 05 Issue: 01 | Jan-2016, Available @ http://www.ijret.org 156
Data gathering: This is the initial stage of analysis,
incomplete data will give inaccurate simulation and wrong
conclusions. The following inputs are required before
simulations are,Identify the Headings
a) CAD model of casting.
b) Initially with the available drafting of the component
develop a 3D model using CAD software’s like CATIA.
The model should be saved in an exchange standard like
STL.
c) Material properties.
d) As per the requirement of the component suitable
material is selected and details related to cast metal and
mould are gathered. Properties of all major alloys are
usually available in the programme database.
e) Process parameters like pouring time and temperature
are taken into consideration before casting simulation is
carried out.
Design and modeling: The operator before simulation first
design the following procedure i.e., locating of parting line,
designing and locating of cores, runners, risers and gating
system and also designing the mould cavity using his
experience and foundry practices. This requires both
knowledge and CAD skills. After completion of each round
of simulation, the methods design has to be modified based
on the results and the solid model of the mould has to be
created again.
Numerical simulation: First carry out the following steps
before simulating i.e., mould generation, mesh generation,
material selection for mould and casting, specifying the
temperature for mould and metal, specifying the die-cast
details, specifying gravity direction. Now carry out the
simulation, after the simulation is complete the defects in
casting can be identified.
Optimization: This stage involves improving the methods
design to eliminate defects and improve yield. The result
obtained in first simulation is analyzed, and then suitable
changes and improvements are done. The changes include
redesigning gating system and improvements include
providing overflows.
Project closure: This stage is achieved on reaching a
simulation result where defects are reduced to the maximum
possible limit. After achieving the solution to the problem
documentation of the results is carried out. The
documentation includes input and output data and pictures
of defects and results.
1. METHODOLOGY
Process flow chart:
First select the product or component for which the
pressure die casting process is to be carried out.
Develop CAD model of the product using
applications such as Auto-cad, Catia from the
isometric sketch provided by the company.
According the working environment and properties
required for the component select suitable material
to suit the needs.
Develop gating system that provides obstruction
free flow of the liquid material through the
component.
Input specific details that are required for die
casting simulation. Simulate the component using
Z-cast software developed by cubictek, Korea.
Check the result at the end of simulation.
Identify flaws and modify gating system and
provide overflows to get defect free result.
The above steps will be repeated till we obtain
defect free simulation [3].
3. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 05 Issue: 01 | Jan-2016, Available @ http://www.ijret.org 157
2. COMPONENT – HORN COVER
Horn cover is an automotive part. The material to be cast is
an aluminium alloy –ACD12.The part to be cast has several
intricate profiles such as holes, rectangular profiles, fillets
etc. All these features are examined carefully and the design
is carried out suitably. The parting line is chosen to suit easy
manufacturability and to ensure high rate of production.
i) Pre-processor
Open new workspace and save it with a specific
file name.
Open the STL files of the Horn cover component,
runner and overflows.
Add mould to the component.
Generate mesh for the component.
ii) Solver
Add suitable material for both component and
mould that is available in the database.
Specify the temperatures of both component
material and mould.
Selection of the in-gate.
Specify the gravity direction in the component.
Specify shrieked portion temperature.
Specify temperature, velocity and filling time.
Post processor
Specify the flow temperature range.
Select die cast as the in-gate parameter and input its
values.
3. EXPERIMENTAL INPUT DATA
Geometry
Solid model of Part ( Pro/E or UG part files, Step,
igs or Para solid)
Solid model of Die.
Solid models of gating, Runner, and shot sleeve.
Overall die dimension.
Location of cooling lines.
Location and dimensions of any slides, overflows,
chills, cores.
Layout showing number of parts/cavity.
Gating, Runner, and shot sleeve dimensions and
locations.
Material Data
Standard alloy designation; chemistry of specific
alloy – ADC12
Die material -HDS BHOLER-W-302.
Identification of any other materials used.
Fluid Analysis
Fill time. -0.06sec
Velocity – 1
st
Stage Velocity -0.2m/sec
2
nd
Stage velocity- 2m/sec
Injection Pressure-280 Kg/cm2
System pressure-150Kg/cm2
Initial Temperature
Metal temperature at the time of cost Pouring
temperature = 640o
C,
Die preheat temperature: Initial = 150º Stabilized =
180º cover die, 220º EJE.
Ambient temperature = 300
Water flow rate- 2Litter/mint./CHANNEL, IN
SPOT COOLING 1 litter /min
If not continuous, time on; time off Inlet 28º and
Outlet temperature 32º
Cycle time
Start cycle (time 0) Time to complete
Metal Injection – Start 6 sec
Dwell (hold) time 14 sec
Die opening time 18 sec
Begin spray 24 sec
End spray 33 sec
Begin Air Blow 36 sec
End Air blow 41 sec
Close die 45 sec
Start of next cycle 50 sec
Total cycle time: (die close to die close)
6.1. RESULT AND DISCUSSIONS
Result 1
The geometry of the gating system has been developed to
analyze the casting pattern using the Z-cast software.
4. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 05 Issue: 01 | Jan-2016, Available @ http://www.ijret.org 158
Horn cover with proper gating systems taking design
considerations. The set up is designed in such a way that
two components produce at the same time. Based on the
number of cavities and the component shape parting line is
located. On the basis of parting line gating is located. The
component size is considerably small hence we use a side
gate.
Result 2:
Filling regions in the casting after solidification of molten
metal. The purpose of providing overflow is to reduce un-
filling but in this case air entrapped in the top overflow
section returns back into the mould cavity through the side
entrance of the overflow. In the next case this concept has to
be taken into consideration while designing the overflow.
Final Result 3:
Component with gating system with modified overflows to
get improved output from previous results. Here a step is
provided where the overflow was broken in previous result,
due to this change in overflow the blocks air from entering
into the component.
4. FINAL COMPONENT AFTER CASTING:
The casting shown are die casted using the final geometry
wherein the accuracy of the casting is almost near to the
predicted by analysis
5. CONCLUSION
Increase the quality of product by reducing air present in
the shot sleeve during casting process.
HPDC machines are used to reduce set up time before
casting process.
Optimizing the casting process by controlling flow of
molten metal in casting process by plunger movement.
Less time for tool design process and minimum time will
be required for casting process and wastage of material
will be less.
Simulation which gives the information to the user about
the quality of the product whether acceptable or not.
By use of HPDC machines, according to these
simulation results, to reduce scrap, wastage, and
production time and improve the quality of product.
By using simulation result manufacturer can design the
gates, runner and riser position, where to give overflow.
By this to get best solution for filling up of molten metal
in to mould cavity.
ACKNOWLEDGMENT
I express my sincere thanks and heartfelt gratitude to my
guide Dr.T.R.Anil for the enthusiasm and inspiration. I
express my deep sense of gratitude and heartfelt thanks to
Prof. V.N. Satwik and Prof. S. C. Kulkarni for his attention,
guidance, insight, and support during this project work and
the preparation of this thesis. I also would like to express my
deep sense of gratitude to Dr. R. R. Malagi, PG coordinator,
department of Mechanical Engineering, for his valuable
suggestions during this project work and the preparation of
this thesis.
5. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 05 Issue: 01 | Jan-2016, Available @ http://www.ijret.org 159
REFERENCES
[1] Dargusch M.S., Dour.G, Schauer.N, Dinnis C.M.,
Savage G., The influence of pressure during
solidification of high pressure die cast aluminium
telecommunications components, J. Mater. Process.
Technol. 180 (1–3) (2006) 37–43.
[2] Reddy A.P, Pande S.S and Ravi B., IIT – Bombay,
“Computer Aided Design of die casting dies”
[3] Muthu kumar. B., “Design and development of pressure
die casting”, GT&TC, Bengaluru
[4] Herman E.A, Heat Flow in the Die Casting Process,
Society of Die Casting Engineers, 1985.