This document discusses static and transient vibrational analyses of functionally graded materials (FGMs) using finite element modeling. FGMs are composite materials with continuous variation of material properties, such as a ceramic-metal mixture. The analyses examine deflection, vibration frequencies, and transient response of FGM plates and shells under mechanical and thermal loads. Results show the material gradient and volume fractions significantly impact structural response. Finite element modeling using first-order shear deformation theory is employed to efficiently analyze the functionally graded structures.
The document summarizes a study that analyzed the structural properties of composite T-joints with different cut-out shapes using finite element analysis and Tsai-Hill failure criteria. A composite T-joint model was created and subjected to pulling, shear, and bending loads. Models with different cut-out shapes but the same total cut-out area were also analyzed under the same loads. Results found that for transverse pulling loads, a vertical ellipse cut-out shape performed best with no failure, while other shapes showed failure. For shear and bending loads, different cut-out shapes performed best. The best overall shape was selected based on composite performance under all three loading conditions.
Thermal analysis of FGM plates using FEM methodRajani Dalal
The document describes an M. Tech dissertation presentation on using finite element analysis to model the thermal behavior of functionally graded material plates. It discusses the objectives of analyzing FGM plates through literature review, developing a finite element computer code, and determining temperature profiles to compare with conventional materials. The introduction defines FGMs as composites with continuously varying material properties through the thickness to reduce stresses and improve bonding between dissimilar materials like ceramics and metals.
Analysis of Functionally Graded Material Plate under Transverse Load for Vari...IOSR Journals
Functionally gradient materials (FGM) are one of the most widely used materials in various
applications because of their adaptability to different situations by changing the material constituents as per the
requirement. Most structural components used in the field of engineering can be classified as beams, plates, or
shells for analysis purposes. In the present study the power law, sigmoid and exponential distribution is
considered for the volume fraction distributions of the functionally graded plates. The work includes parametric
studies performed by varying volume fraction distributions and boundary conditions. Also static analysis of
functionally gradient material plate is carried out by sigmoid law and verified with the published results. The
convergence study of the results is optimized by changing the mesh size and layer size. Power law and
exponential law are applied for the same material and set of conditions.
This document discusses the development and characterization of polymer-ceramic composite materials with continuous fiber reinforcement and functionally graded properties for aerospace applications. Specifically, it examines quartz fabric-reinforced composites with a silicone resin and fused silica powder matrix that is compositionally graded across the thickness. The composites demonstrated improved mechanical and thermal properties over non-graded materials, including high flexural strength, low thermal expansion, and the ability to withstand high heating rates without delamination or charring. The results suggest these functionally graded composites are promising candidates for reusable high-temperature aerospace structures.
Fabrication and Analysis of Single Lap Joint Glass Fiber Reinforced Polymer C...IRJET Journal
This document summarizes research on analyzing the tensile strength of single lap joints in glass fiber reinforced polymer (GFRP) composite materials. Specifically, it looks at uni-directional and bi-directional ply composites with 10% silicon carbide additions. The composites were fabricated using hand layup and tested experimentally, numerically via finite element analysis, and analytically. Results showed that the bi-directional ply composite had a higher tensile strength than the uni-directional ply composite, making it more suitable for aircraft and automotive applications.
Analysis of buckling behaviour of functionally graded platesByju Vijayan
1. The document discusses the buckling behavior of functionally graded plates through two case studies.
2. The first case study analyzes the buckling of simply supported functionally graded rectangular plates under non-uniform in-plane compressive loading using classical plate theory. It finds that the critical buckling coefficient increases with the power law index and aspect ratio.
3. The second case study examines the buckling of imperfect functionally graded plates under in-plane compressive loading. It determines that the critical buckling load depends on factors like the load ratio, power law index, and amplitude of imperfection.
This document outlines a student's workplan to study the fracture of functionally graded materials. The plan includes conducting a literature review to identify gaps and objectives, modeling the material and analyzing it using software, performing parametric studies on properties like reinforcement size and volume fractions, and submitting a final report. Experimental results are also presented on a photoelastic model that show stress distributions and crack propagation under loading. Numerical finite element modeling is found to match the experimental photoelastic results to within 5-8 percent.
buckling analysis of cantilever pultruded I-sections using 𝐴𝑁𝑆𝑌𝑆 ®IJARIIE JOURNAL
This document summarizes a study on buckling analysis of cantilever pultruded I-beams using finite element analysis software ANSYS. Four different pultruded I-beam cross sections were modeled and buckling loads were calculated and compared to experimental data. The results showed good agreement with experimental values. A parametric study was also conducted to analyze the effect of fiber orientation and fiber volume fraction on critical buckling loads of the beams under a point load. Global lateral-torsional buckling loads and local flange buckling loads were determined for different fiber angles and volume fractions.
The document summarizes a study that analyzed the structural properties of composite T-joints with different cut-out shapes using finite element analysis and Tsai-Hill failure criteria. A composite T-joint model was created and subjected to pulling, shear, and bending loads. Models with different cut-out shapes but the same total cut-out area were also analyzed under the same loads. Results found that for transverse pulling loads, a vertical ellipse cut-out shape performed best with no failure, while other shapes showed failure. For shear and bending loads, different cut-out shapes performed best. The best overall shape was selected based on composite performance under all three loading conditions.
Thermal analysis of FGM plates using FEM methodRajani Dalal
The document describes an M. Tech dissertation presentation on using finite element analysis to model the thermal behavior of functionally graded material plates. It discusses the objectives of analyzing FGM plates through literature review, developing a finite element computer code, and determining temperature profiles to compare with conventional materials. The introduction defines FGMs as composites with continuously varying material properties through the thickness to reduce stresses and improve bonding between dissimilar materials like ceramics and metals.
Analysis of Functionally Graded Material Plate under Transverse Load for Vari...IOSR Journals
Functionally gradient materials (FGM) are one of the most widely used materials in various
applications because of their adaptability to different situations by changing the material constituents as per the
requirement. Most structural components used in the field of engineering can be classified as beams, plates, or
shells for analysis purposes. In the present study the power law, sigmoid and exponential distribution is
considered for the volume fraction distributions of the functionally graded plates. The work includes parametric
studies performed by varying volume fraction distributions and boundary conditions. Also static analysis of
functionally gradient material plate is carried out by sigmoid law and verified with the published results. The
convergence study of the results is optimized by changing the mesh size and layer size. Power law and
exponential law are applied for the same material and set of conditions.
This document discusses the development and characterization of polymer-ceramic composite materials with continuous fiber reinforcement and functionally graded properties for aerospace applications. Specifically, it examines quartz fabric-reinforced composites with a silicone resin and fused silica powder matrix that is compositionally graded across the thickness. The composites demonstrated improved mechanical and thermal properties over non-graded materials, including high flexural strength, low thermal expansion, and the ability to withstand high heating rates without delamination or charring. The results suggest these functionally graded composites are promising candidates for reusable high-temperature aerospace structures.
Fabrication and Analysis of Single Lap Joint Glass Fiber Reinforced Polymer C...IRJET Journal
This document summarizes research on analyzing the tensile strength of single lap joints in glass fiber reinforced polymer (GFRP) composite materials. Specifically, it looks at uni-directional and bi-directional ply composites with 10% silicon carbide additions. The composites were fabricated using hand layup and tested experimentally, numerically via finite element analysis, and analytically. Results showed that the bi-directional ply composite had a higher tensile strength than the uni-directional ply composite, making it more suitable for aircraft and automotive applications.
Analysis of buckling behaviour of functionally graded platesByju Vijayan
1. The document discusses the buckling behavior of functionally graded plates through two case studies.
2. The first case study analyzes the buckling of simply supported functionally graded rectangular plates under non-uniform in-plane compressive loading using classical plate theory. It finds that the critical buckling coefficient increases with the power law index and aspect ratio.
3. The second case study examines the buckling of imperfect functionally graded plates under in-plane compressive loading. It determines that the critical buckling load depends on factors like the load ratio, power law index, and amplitude of imperfection.
This document outlines a student's workplan to study the fracture of functionally graded materials. The plan includes conducting a literature review to identify gaps and objectives, modeling the material and analyzing it using software, performing parametric studies on properties like reinforcement size and volume fractions, and submitting a final report. Experimental results are also presented on a photoelastic model that show stress distributions and crack propagation under loading. Numerical finite element modeling is found to match the experimental photoelastic results to within 5-8 percent.
buckling analysis of cantilever pultruded I-sections using 𝐴𝑁𝑆𝑌𝑆 ®IJARIIE JOURNAL
This document summarizes a study on buckling analysis of cantilever pultruded I-beams using finite element analysis software ANSYS. Four different pultruded I-beam cross sections were modeled and buckling loads were calculated and compared to experimental data. The results showed good agreement with experimental values. A parametric study was also conducted to analyze the effect of fiber orientation and fiber volume fraction on critical buckling loads of the beams under a point load. Global lateral-torsional buckling loads and local flange buckling loads were determined for different fiber angles and volume fractions.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses the importance of grain size in materials and methods for producing ultrafine grain and nanomaterials. Decreasing grain size improves mechanical properties through increasing dislocations and grain boundaries. Severe plastic deformation techniques like equal channel angular pressing and high pressure torsion are used to refine grains down to the nanoscale in a top-down process. These nanomaterials exhibit high strength, ductility, and thermal stability due to their small, uniformly distributed grains.
Experimental evaluation of flexural properties of polymer matrix compositesiaemedu
This document discusses an experimental evaluation of the flexural properties of polymer matrix composites reinforced with glass and carbon fibers. Three-point bending tests were conducted on laminate beams fabricated with bi-woven glass and carbon fibers in epoxy resin. The test results showed that carbon fiber composites had higher flexural strength and stiffness compared to glass fiber composites. Additionally, increasing the laminate thickness from 2mm to 3mm improved the flexural properties. The findings from the experimental tests agreed with theoretical predictions about the superior mechanical properties of carbon fibers relative to other fiber types.
Thermal Resistance Approach to Analyze Temperature Distribution in Hollow Cyl...S M Shayak Ibna Faruqui
Thermal Resistance Approach to Analyze Temperature Distribution in Hollow Cylinders Made of Functionally Graded Material (FGM): Under Dirichlet Boundary Condition
The document proposes a thermal resistance approach (TRA) to analyze the temperature distribution in hollow cylinders made of functionally graded materials (FGMs) under Dirichlet boundary conditions. The TRA models the FGM cylinder as a thermal resistance network to bypass the non-linearity introduced by the power-law variation of thermal conductivity. Results from the TRA are found to match previous analytical and numerical solutions with less than 0.000012% average error. The TRA can determine temperature profiles for any material gradient distribution and provides insights into tailoring material gradients for desired temperature or stress fields.
Experimental and numerical evaluation of plasticity model with ductile damage...IJERA Editor
This work aims to develop a methodology for numerical evaluation via finite elements applied to projects shields sheet metal. To validate the methodology physical test were conduct and were compare with the numerical simulation. In the simulation, a plasticity material modelit was used at high strain rates, besides the insertion of a damage model through forming limit diagram (FLD) to capture the initiation of damage and energy criteria for propagation of the fracture. The tested shielding design is for the II-A protection level using the type 9mm ammunition.
Effect of MR Fluid Damping during Milling of CFRP LaminatesIJERA Editor
Machining of fiber reinforced composites is an essential activity taken up in order to integrate them with other
components. Carbon fiber reinforced polymer (CFRP) composites are difficult to machine owing to the nonhomogeneity
of their constituent materials and abrasive nature. As these materials involve more than one phase,
the variation of cutting forces is rather large, which leads to tool chatter and poor surface finish. Therefore the
proper selection of the tool, process parameters and the ability to control the machining forces would result in
better tolerances and improved surface finish. In this study, multiple slots are machined in CFRP laminates
under different machining conditions of spindle speed, feed and depth of cut. A comparative study is made by
conducting the same set of experiments under the influence of the magneto- rheological (MR) damping in order
to assess the tool deflection. It is observed that the MR fluid damping reduces the tool deflection and thus
improves the quality of machined surfaces.
Finite Element Analysis of the Composite Patch Repairs of the PlatesIJERA Editor
Adhesively-bonded patches are used for repair of different types of damages such as holes, notches, scratches, cracks etc. occurring in metallic as well as composite structures. The composite patching is the most widely used method of restoring the load-carrying capacity of the weakened structure. Due to the rapid growth of aerospace industry, analysis of adhesively-bonded patches to repair cracked structures have been the focus for many years. Most of these studies investigated repaired structures using linear analysis and demonstrated the viability of adhesively-bonded patch-repairs as a means to improve the durability and damage tolerance of cracked metallic structures efficiently and economically.Many researchers performed more intensive research on the method and presented the advantages of a composite material patch used for the cracked plate repairing. It was found that the bonded patch method not only reduces the weight but also increases the service life.In this research work, the analysis of cracked metallic and composite plates which are repaired by bonded-composite patches is performed using Finite Element Analysis package FRANC2D/L. This package is available with its corresponding mesh generating program CACSA. They are developed by Cornel Fracture Group, Cornel University.In this study, various fracture parameters for the structures are found out. It revealed that, the application of the bonded composite patches effectively reduces the stress intensity factor (SIF) near the crack tip and hence retards or eliminates the crack propagation. As the chances of fracture are almost reduced, the life of the structures increases by almost double of the initial. The main advantage of this patch repair technology is that, it doesn’t increase the weight of the structure too much.
This research article analyzes the static response of functionally graded material (FGM) plates under transverse loads for varying aspect ratios. FGM plates are modeled with power law, sigmoid law, and exponential distributions for the volume fraction. Finite element analysis is performed in ANSYS to model FGM plates with 16 layers. Parameters such as volume fraction distribution and aspect ratio are varied. The FGM plate is subjected to uniform and point loads, and the response is analyzed. Results provide insight into how the varying material properties of FGMs impact their structural response under different loading and geometric conditions.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
ANALYSIS OF PROCESS PARAMETERS IN MILLING OF GLASS FIBRE REINFORCED PLASTIC C...IAEME Publication
Milling is one of the most important machining processes in manufacturing parts made out
of FRPs. Milling is a very versatile process capable of producing simple two dimensional flat
shapes to complex three dimensional interlaced surface configurations, in which a rotating,
multi-tooth cutter removes material while traveling along various axes with respect to the work
piece. However, unlike the milling of metals which is characterized by high material removal
rates, milling of FRPs is conducted at much lower scale. The reason for this is that FRP
components are largely made near net shape and any subsequent milling is limited mainly tode-burring and trimming as well as to achieving contourshapeaccuracy. Milling compositematerials are significantly affected by the tendency of these materials to delaminate under the
action of machining forces, cutting force, feed force and depth force respectively.Quality surface milling of Glass Fibre reinforced Plastic materials present variety ofissues, such milling is one of the foremost oftentimes used material removal processes in
machining of FRPs to produce a well-defined surface finish and has surface delaminationrelated to the characteristics of the material and therefore the cutting parameters used. Thesurface quality and dimensional precision greatly have an effect on the elements throughout
their useful life, especially in cases wherever the elements come in contact with differentelements or materials. Optimization of machining parameters is a necessary step in machining.
This project presents a new approach for optimizing the machining parameters on end millingof glass-fibre reinforced plastic composites. Optimization of machining parameters was doneby Taguchi method in milling experiments were conducted for Glass fibre reinforced plastic
composite plates using solid carbide end mills with various helix angles. The parameters ofmachining such as, Fibre orientation angle, spindle speed, feed rate and helix angle are
Analysis of Process Parameters in Milling of Glass Fibre Reinforced Plastic Composites
http://www.iaeme.com/IJMET/index.asp 150 editor@iaeme.com
optimized by multi-response concerns particularly surface roughness and machining force the
optimum levels of parameters have been investigated by using Taguchi method.
The present investigation deals with the static analysis of adhesively bonded inner tapered double lap joint in laminated FRP composites subjected to transverse loading using three-dimensional theory of elasticity based finite element method. Many researchers studied the influences of various parameters on the failure behaviour on the composites. In those studies, the typical bonding parameters are surface conditions, fillet, bond line thickness, and environmental conditions. In the present study the stresses and deformation characteristics of adhesively bonded inner tapered double lap joint made of generally and especially orthotropic laminates (FRP) subjected to transverse loading for the three different adhesive angles, three different adhesive thicknesses with different fibre angle orientations, i.e. the adhesive angles from 350 to 450 increased in steps of 50. The variation in stresses and deflection are studied when the fibre angle orientation is varied from 00 to 900 in steps of 150. The adhesive thickness varies from 0.05 to 0.15 insteps of 0.05mm. In all the above cases stresses and displacements at various locations are evaluated for the static boundary conditions
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document summarizes research on the mechanical properties of glass fiber reinforced polyester composites with varying fiber weight percentages (15-60%). Composites were produced using hand lay-up and tested for tensile strength, flexural strength, impact strength, and hardness. Test results showed the mechanical properties improved with increasing fiber content. Tensile strength increased from 28.25 to 78.83 MPa, flexural strength from 44.65 to 119.23 MPa, and impact energy from 3.50 to 6.50 Joules. Hardness increased from 31.5 to 47 BHN. The composite with 60% fiber content exhibited the best mechanical properties.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document reviews several studies that analyzed bolted joints in composite laminates. It discusses how clamping force and laminate stacking sequence can affect failure mechanisms and strength. The review examines both experimental and modeling/simulation approaches. Studies investigated topics like bearing strength, fatigue characteristics, stress distributions, and the effects of parameters like bolt-hole clearance and clamping loads. Overall, the review indicates that while modeling techniques have improved understanding, further work is still needed to optimize bolted joint design given composites' brittle failure modes.
Improving Mechanical Properties of AL 7075 alloy by Equal Channel Angular Ext...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
In materials science, Functionally Graded Material (FGM) may be characterized by the variation in composition and structure gradually over volume, resulting in corresponding changes in the properties of the material. The materials can be designed for specific function and applications.
Review on Functionally Graded Materials and Various TheoriesIRJET Journal
This document provides a review of functionally graded materials (FGMs) and various analytical theories used to model them. It begins with an introduction to FGMs, which are advanced composite materials with continuous, smooth variations in composition and material properties. It then discusses several analytical approaches used to model FGMs, including the Mori-Tanka method, composite sphere/cylinder assemblage models, and micromechanical models using finite element analysis. The document concludes with a literature review summarizing several research studies that have applied these analytical approaches to modeling FGM beams, plates, and sandwich structures.
Mesomechanics- The domain for Structural Integrity Evalution of fibre polyme...Padmanabhan Krishnan
The importance of Mesomechanics as the The domain for Structural Integrity Evalution of fibre polymer composites is described in comparison with the micromechanical domains that are of importance in ceramics and their composites.
Preparation and characterization of self reinforced fibre polymer composites ...Padmanabhan Krishnan
This document outlines the agenda and methodology for a research project on self-reinforced fibre polymer composites, with an emphasis on the fibre/matrix interface. The research will involve theoretical and experimental investigations of the interfacial properties, quasi-static properties, and low velocity impact properties of four types of self-reinforced polymer composites. Fractography and correlation studies will also be conducted. The goal is to better understand the relationship between interfacial properties, mechanical properties, and impact behavior, while addressing gaps in current literature regarding these composites. Thermal analysis, laminate preparation, mechanical testing, and microscopy techniques will be employed in the study.
Recent Development In Modelling and Analysis of Functionally Graded MaterialsIRJET Journal
This document summarizes recent developments in modeling and analyzing functionally graded materials (FGMs). FGMs are advanced composite materials with properties that vary continuously based on location. Various modeling techniques are discussed, including higher-order shear deformation theories and homogenization methods to determine effective material properties. Applications of FGMs mentioned include aerospace, defense, energy, and biomedical due to advantages like reducing stresses at interfaces and increasing fracture toughness.
IRJET- A Review on Functionally Graded PlateIRJET Journal
This document provides an overview of functionally graded materials (FGMs), which are composite materials with properties that vary smoothly from one surface to another. FGMs are advantageous because they can resist high temperatures and reduce thermal stresses. The document discusses various modeling methods for FGMs and describes their characteristics and applications. FGMs find use in industries like aerospace, medicine, defense, and energy due to their tailored properties and ability to combine characteristics of different materials.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses the importance of grain size in materials and methods for producing ultrafine grain and nanomaterials. Decreasing grain size improves mechanical properties through increasing dislocations and grain boundaries. Severe plastic deformation techniques like equal channel angular pressing and high pressure torsion are used to refine grains down to the nanoscale in a top-down process. These nanomaterials exhibit high strength, ductility, and thermal stability due to their small, uniformly distributed grains.
Experimental evaluation of flexural properties of polymer matrix compositesiaemedu
This document discusses an experimental evaluation of the flexural properties of polymer matrix composites reinforced with glass and carbon fibers. Three-point bending tests were conducted on laminate beams fabricated with bi-woven glass and carbon fibers in epoxy resin. The test results showed that carbon fiber composites had higher flexural strength and stiffness compared to glass fiber composites. Additionally, increasing the laminate thickness from 2mm to 3mm improved the flexural properties. The findings from the experimental tests agreed with theoretical predictions about the superior mechanical properties of carbon fibers relative to other fiber types.
Thermal Resistance Approach to Analyze Temperature Distribution in Hollow Cyl...S M Shayak Ibna Faruqui
Thermal Resistance Approach to Analyze Temperature Distribution in Hollow Cylinders Made of Functionally Graded Material (FGM): Under Dirichlet Boundary Condition
The document proposes a thermal resistance approach (TRA) to analyze the temperature distribution in hollow cylinders made of functionally graded materials (FGMs) under Dirichlet boundary conditions. The TRA models the FGM cylinder as a thermal resistance network to bypass the non-linearity introduced by the power-law variation of thermal conductivity. Results from the TRA are found to match previous analytical and numerical solutions with less than 0.000012% average error. The TRA can determine temperature profiles for any material gradient distribution and provides insights into tailoring material gradients for desired temperature or stress fields.
Experimental and numerical evaluation of plasticity model with ductile damage...IJERA Editor
This work aims to develop a methodology for numerical evaluation via finite elements applied to projects shields sheet metal. To validate the methodology physical test were conduct and were compare with the numerical simulation. In the simulation, a plasticity material modelit was used at high strain rates, besides the insertion of a damage model through forming limit diagram (FLD) to capture the initiation of damage and energy criteria for propagation of the fracture. The tested shielding design is for the II-A protection level using the type 9mm ammunition.
Effect of MR Fluid Damping during Milling of CFRP LaminatesIJERA Editor
Machining of fiber reinforced composites is an essential activity taken up in order to integrate them with other
components. Carbon fiber reinforced polymer (CFRP) composites are difficult to machine owing to the nonhomogeneity
of their constituent materials and abrasive nature. As these materials involve more than one phase,
the variation of cutting forces is rather large, which leads to tool chatter and poor surface finish. Therefore the
proper selection of the tool, process parameters and the ability to control the machining forces would result in
better tolerances and improved surface finish. In this study, multiple slots are machined in CFRP laminates
under different machining conditions of spindle speed, feed and depth of cut. A comparative study is made by
conducting the same set of experiments under the influence of the magneto- rheological (MR) damping in order
to assess the tool deflection. It is observed that the MR fluid damping reduces the tool deflection and thus
improves the quality of machined surfaces.
Finite Element Analysis of the Composite Patch Repairs of the PlatesIJERA Editor
Adhesively-bonded patches are used for repair of different types of damages such as holes, notches, scratches, cracks etc. occurring in metallic as well as composite structures. The composite patching is the most widely used method of restoring the load-carrying capacity of the weakened structure. Due to the rapid growth of aerospace industry, analysis of adhesively-bonded patches to repair cracked structures have been the focus for many years. Most of these studies investigated repaired structures using linear analysis and demonstrated the viability of adhesively-bonded patch-repairs as a means to improve the durability and damage tolerance of cracked metallic structures efficiently and economically.Many researchers performed more intensive research on the method and presented the advantages of a composite material patch used for the cracked plate repairing. It was found that the bonded patch method not only reduces the weight but also increases the service life.In this research work, the analysis of cracked metallic and composite plates which are repaired by bonded-composite patches is performed using Finite Element Analysis package FRANC2D/L. This package is available with its corresponding mesh generating program CACSA. They are developed by Cornel Fracture Group, Cornel University.In this study, various fracture parameters for the structures are found out. It revealed that, the application of the bonded composite patches effectively reduces the stress intensity factor (SIF) near the crack tip and hence retards or eliminates the crack propagation. As the chances of fracture are almost reduced, the life of the structures increases by almost double of the initial. The main advantage of this patch repair technology is that, it doesn’t increase the weight of the structure too much.
This research article analyzes the static response of functionally graded material (FGM) plates under transverse loads for varying aspect ratios. FGM plates are modeled with power law, sigmoid law, and exponential distributions for the volume fraction. Finite element analysis is performed in ANSYS to model FGM plates with 16 layers. Parameters such as volume fraction distribution and aspect ratio are varied. The FGM plate is subjected to uniform and point loads, and the response is analyzed. Results provide insight into how the varying material properties of FGMs impact their structural response under different loading and geometric conditions.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
ANALYSIS OF PROCESS PARAMETERS IN MILLING OF GLASS FIBRE REINFORCED PLASTIC C...IAEME Publication
Milling is one of the most important machining processes in manufacturing parts made out
of FRPs. Milling is a very versatile process capable of producing simple two dimensional flat
shapes to complex three dimensional interlaced surface configurations, in which a rotating,
multi-tooth cutter removes material while traveling along various axes with respect to the work
piece. However, unlike the milling of metals which is characterized by high material removal
rates, milling of FRPs is conducted at much lower scale. The reason for this is that FRP
components are largely made near net shape and any subsequent milling is limited mainly tode-burring and trimming as well as to achieving contourshapeaccuracy. Milling compositematerials are significantly affected by the tendency of these materials to delaminate under the
action of machining forces, cutting force, feed force and depth force respectively.Quality surface milling of Glass Fibre reinforced Plastic materials present variety ofissues, such milling is one of the foremost oftentimes used material removal processes in
machining of FRPs to produce a well-defined surface finish and has surface delaminationrelated to the characteristics of the material and therefore the cutting parameters used. Thesurface quality and dimensional precision greatly have an effect on the elements throughout
their useful life, especially in cases wherever the elements come in contact with differentelements or materials. Optimization of machining parameters is a necessary step in machining.
This project presents a new approach for optimizing the machining parameters on end millingof glass-fibre reinforced plastic composites. Optimization of machining parameters was doneby Taguchi method in milling experiments were conducted for Glass fibre reinforced plastic
composite plates using solid carbide end mills with various helix angles. The parameters ofmachining such as, Fibre orientation angle, spindle speed, feed rate and helix angle are
Analysis of Process Parameters in Milling of Glass Fibre Reinforced Plastic Composites
http://www.iaeme.com/IJMET/index.asp 150 editor@iaeme.com
optimized by multi-response concerns particularly surface roughness and machining force the
optimum levels of parameters have been investigated by using Taguchi method.
The present investigation deals with the static analysis of adhesively bonded inner tapered double lap joint in laminated FRP composites subjected to transverse loading using three-dimensional theory of elasticity based finite element method. Many researchers studied the influences of various parameters on the failure behaviour on the composites. In those studies, the typical bonding parameters are surface conditions, fillet, bond line thickness, and environmental conditions. In the present study the stresses and deformation characteristics of adhesively bonded inner tapered double lap joint made of generally and especially orthotropic laminates (FRP) subjected to transverse loading for the three different adhesive angles, three different adhesive thicknesses with different fibre angle orientations, i.e. the adhesive angles from 350 to 450 increased in steps of 50. The variation in stresses and deflection are studied when the fibre angle orientation is varied from 00 to 900 in steps of 150. The adhesive thickness varies from 0.05 to 0.15 insteps of 0.05mm. In all the above cases stresses and displacements at various locations are evaluated for the static boundary conditions
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document summarizes research on the mechanical properties of glass fiber reinforced polyester composites with varying fiber weight percentages (15-60%). Composites were produced using hand lay-up and tested for tensile strength, flexural strength, impact strength, and hardness. Test results showed the mechanical properties improved with increasing fiber content. Tensile strength increased from 28.25 to 78.83 MPa, flexural strength from 44.65 to 119.23 MPa, and impact energy from 3.50 to 6.50 Joules. Hardness increased from 31.5 to 47 BHN. The composite with 60% fiber content exhibited the best mechanical properties.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document reviews several studies that analyzed bolted joints in composite laminates. It discusses how clamping force and laminate stacking sequence can affect failure mechanisms and strength. The review examines both experimental and modeling/simulation approaches. Studies investigated topics like bearing strength, fatigue characteristics, stress distributions, and the effects of parameters like bolt-hole clearance and clamping loads. Overall, the review indicates that while modeling techniques have improved understanding, further work is still needed to optimize bolted joint design given composites' brittle failure modes.
Improving Mechanical Properties of AL 7075 alloy by Equal Channel Angular Ext...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
In materials science, Functionally Graded Material (FGM) may be characterized by the variation in composition and structure gradually over volume, resulting in corresponding changes in the properties of the material. The materials can be designed for specific function and applications.
Review on Functionally Graded Materials and Various TheoriesIRJET Journal
This document provides a review of functionally graded materials (FGMs) and various analytical theories used to model them. It begins with an introduction to FGMs, which are advanced composite materials with continuous, smooth variations in composition and material properties. It then discusses several analytical approaches used to model FGMs, including the Mori-Tanka method, composite sphere/cylinder assemblage models, and micromechanical models using finite element analysis. The document concludes with a literature review summarizing several research studies that have applied these analytical approaches to modeling FGM beams, plates, and sandwich structures.
Mesomechanics- The domain for Structural Integrity Evalution of fibre polyme...Padmanabhan Krishnan
The importance of Mesomechanics as the The domain for Structural Integrity Evalution of fibre polymer composites is described in comparison with the micromechanical domains that are of importance in ceramics and their composites.
Preparation and characterization of self reinforced fibre polymer composites ...Padmanabhan Krishnan
This document outlines the agenda and methodology for a research project on self-reinforced fibre polymer composites, with an emphasis on the fibre/matrix interface. The research will involve theoretical and experimental investigations of the interfacial properties, quasi-static properties, and low velocity impact properties of four types of self-reinforced polymer composites. Fractography and correlation studies will also be conducted. The goal is to better understand the relationship between interfacial properties, mechanical properties, and impact behavior, while addressing gaps in current literature regarding these composites. Thermal analysis, laminate preparation, mechanical testing, and microscopy techniques will be employed in the study.
Recent Development In Modelling and Analysis of Functionally Graded MaterialsIRJET Journal
This document summarizes recent developments in modeling and analyzing functionally graded materials (FGMs). FGMs are advanced composite materials with properties that vary continuously based on location. Various modeling techniques are discussed, including higher-order shear deformation theories and homogenization methods to determine effective material properties. Applications of FGMs mentioned include aerospace, defense, energy, and biomedical due to advantages like reducing stresses at interfaces and increasing fracture toughness.
IRJET- A Review on Functionally Graded PlateIRJET Journal
This document provides an overview of functionally graded materials (FGMs), which are composite materials with properties that vary smoothly from one surface to another. FGMs are advantageous because they can resist high temperatures and reduce thermal stresses. The document discusses various modeling methods for FGMs and describes their characteristics and applications. FGMs find use in industries like aerospace, medicine, defense, and energy due to their tailored properties and ability to combine characteristics of different materials.
Currently composites are being used to replace conventional metallic materials in a wide range of industries including aerospace, aircraft and defense which require structural materials with high strength-to-weight and stiffness-to-weight ratios.
GFRP composites are used in fairings, passenger compartments, and storage room doors due to their high mechanical properties. Out of all the machining operations, most commonly used operation is drilling.
But drilling of these composite materials, irrespective of the application area can be considered a critical operation, owing to their tendency to delaminate when subjected to mechanical stresses
IRJET- Computation of Failure Index Strength of FML and FRB CompositesIRJET Journal
This document discusses the computation of failure indices of fiber metal laminate (FML) and fiber reinforced polymer (FRP) composites with different fiber orientations. It first provides background on FRP, FML, and different types of laminate configurations. It then outlines the methodology used, which involves using classical lamination theory (CLT) and the ANSYS software to predict stresses in FML and FRP laminates under in-plane tensile loading. Specific laminate stacking sequences of [Al/45/-45/Al] and [00/45/-45/00] are analyzed. Stresses are calculated in the layers and failure indices are determined using Tsai-Wu criterion for the FRP layers and
Static structural and dynamic analysis of cracks in composite materialsIRJET Journal
This document summarizes a study on analyzing cracks in composite materials using static and dynamic finite element analysis. It discusses:
1) Modeling a cracked and uncracked composite beam in ANSYS and analyzing their stress distributions and natural frequencies under static and dynamic loading. The cracked beam showed higher stresses and lower natural frequencies.
2) Conducting a case study on modeling and analyzing a cracked bicycle crank made of carbon fiber reinforced polymer. The crank was meshed and its stress fields were analyzed to study the effect of cracks on its strength and failure behavior.
3) The study aims to better understand how cracks influence the static and dynamic characteristics of composite materials like beams and crank arms, which is important for
FRP Laminated Composite Plate with Central Circular Hole: Structural and Buck...IRJET Journal
The document discusses a finite element analysis of thin fiber reinforced plastic (FRP) rectangular composite plates with central circular holes under compressive loading. The analysis examines the effect of plate dimension ratio (L/W), stacking sequence, and hole diameter on the structural characteristics and buckling behavior. The results show that the critical load increases with L/W ratio up to a ratio of 4. The critical load also decreases as the hole diameter increases. The stacking sequence is found to impact the critical load values for different buckling modes. The findings provide insights into how composite plates perform under compression loads.
IRJET- Hybrid Building – A Combination of Conventional RCC and Ferrocement Te...IRJET Journal
This document summarizes research on a hybrid building technique that combines conventional reinforced concrete and ferrocement technology. Ferrocement is a type of reinforced concrete made of wire mesh, sand, water and cement that has high strength and versatility. It can be constructed with minimal skilled labor. The document reviews previous studies on the mechanical properties and seismic resistance of ferrocement. It also discusses using ferrocement panels and a lightweight truss system to create an affordable, earthquake resistant house. Research is cited on using blast furnace slag to partially replace sand in lightweight ferrocement beams to study their behavior under monotonic and repeated loading.
FORCE AND WEAR ANALYSIS OF PVD COATED CUTTING TOOL" - A REVIEWIJARIIE JOURNAL
The document reviews tribological properties of ternary nitride coatings used on cutting tools. It discusses how coatings like titanium aluminum nitride (TiAlN) and chromium nitride (CrN) exhibit improved tribological and mechanical properties over binary nitride coatings. The coatings provide benefits like high hardness, corrosion resistance, and oxidation resistance, enabling higher cutting forces and longer tool life. Scanning electron microscopy and scanning probe microscopy are used to examine the microstructure and properties of these coatings.
Densification and deformation behaviour of sintered powder metallurgyIAEME Publication
The document discusses a study on the densification behavior of sintered copper-7% tungsten composite during cold upsetting. Copper and tungsten powders were ball milled and compacted into cylindrical preforms with initial densities of 0.85 and aspect ratios of 0.4, 0.6, and 0.8. The preforms were sintered at 750°C and subjected to cold upsetting under incremental loading. Results showed the composite with an aspect ratio of 0.8 exhibited higher stress and strain values compared to other ratios, indicating it had a greater load bearing capacity and densification during deformation. Plots of hoop strain versus axial strain and true stress versus true strain supported these findings.
Densification and deformation behaviour of sinteredIAEME Publication
This document summarizes a study on the densification and deformation behavior of sintered powder metallurgy copper-7% tungsten composite during cold upsetting. The study evaluated the effect of initial preform density and aspect ratio on the densification properties. Preforms with an initial theoretical density of 0.85 and aspect ratios of 0.4, 0.6, and 0.8 were upset at 750°C. Properties like linear strain, lateral strain, and true stress were evaluated. Results showed that composites obtained higher stress and strain values than pure tungsten powder. The composite with the lowest initial aspect ratio of 0.4 achieved the highest stress and strain.
Experimental Test of Stainless Steel Wire Mesh and Aluminium Alloy With Glass...IJERA Editor
At present, composite materials are mostly used in aircraft structural components, because of their excellent properties like lightweight, high strength to weight ratio, high stiffness, and corrosion resistance and less expensive. In this experimental work, the mechanical properties of laminate, this is reinforced with stainless steel wire mesh, aluminum sheet metal, perforated aluminum sheet metal and glass fibers to be laminate and investigated. The stainless steel wire mesh and perforated aluminum metal were sequentially stacked to fabricate, hybrid composites. The aluminum metal sheet is also employed with that sequence to get maximum strength and less weight. The tensile, compressive and flexure tests carried out on the hybrid composite. To investigate the mechanical properties and elastic properties of the metal matrix composite laminate of a material we are using experimental test and theoretical calculation. The experimental work consists of Tensile, compressive and flexural test. The expectation of this project results in the tensile and compressive properties of this hybrid composite it is slightly lesser than carbon fibers but it could facilitate a weight reduction compared with CFRP panels. So this hybrid laminates composite material offering significant weight savings and maximum strength over some other GFRP conventional panels.
Experimental Test of Stainless Steel Wire Mesh and Aluminium Alloy With Glass...IJERA Editor
This document summarizes an experimental study that tested the mechanical properties of a hybrid composite material made of stainless steel wire mesh, aluminum alloy sheets, glass fibers, and an epoxy matrix. Nine-ply composite laminates were fabricated using compression molding. Tensile, compressive, and flexural tests were conducted on the laminates according to standards. The results found the tensile and compressive properties to be slightly lower than carbon fibers but offered weight savings compared to conventional glass fiber reinforced panels. This hybrid composite material provides significant weight reduction and maximum strength.
Comparative Study of Concrete Prisms Confined with G-FRP Wrapping Under Compr...IRJET Journal
- The document presents the results of an experimental study on the compressive behavior of concrete prisms confined with glass fiber-reinforced polymer (GFRP) wrapping.
- The prisms had varying edge details like sharp edges, rounded corners with radii of 13mm and 19mm, and chamfered edges of 13mm and 19mm.
- The results show that GFRP confinement significantly improved the ultimate compressive strength and failure strain of the prisms compared to unconfined prisms. Prisms with rounded corners and chamfered edges performed better than those with sharp edges.
IRJET- Experimental Investigation on Strengthening of RCC Beams by Wrappi...IRJET Journal
- The document experimentally investigates strengthening reinforced concrete beams by wrapping them with glass fiber reinforced polymer sheets.
- In phase 1, plain concrete beams were wrapped on the bottom side, two parallel sides, or three sides with GFRP and tested at 7 and 28 days. Wrapping on three sides provided the highest flexural strength.
- In phase 2, reinforced concrete beams were wrapped on three sides with GFRP and tested to analyze flexural behavior, cracking, and deflection. Wrapping with GFRP was found to increase the ultimate load capacity of reinforced concrete beams.
A study on flexural strength of hybrid polymer composite materials e glass fibIAEME Publication
This document discusses a study on the flexural strength of hybrid polymer composite materials made of E-glass fibers, carbon fibers, and graphite particles in an epoxy resin matrix. The study varies the thickness of the laminates from 2mm to 4mm and uses two different grades of epoxy resin, 5052 and 556, as the matrix material. Flexural tests were conducted to evaluate how the flexural strength is affected by varying the laminate thickness and using different matrix materials. The goal of the study was to generate material property data for these hybrid composite laminates fabricated using the hand layup and room temperature vacuum bag molding process.
Damping Of Composite Material Structures with Riveted JointsIJMER
Vibration and noise reduction are crucial in maintaining high performance level and
prolonging the useful life of machinery, automobiles, aerodynamic and spacecraft structures. It is
observed that damping in materials occur due to energy release due to micro-slips along frictional
interfaces and due to varying strain regions and interaction between the metals. But it was found
that the damping effect in metals is quite small that it can be neglected. Damping in metals is due to
the micro-slips along frictional interfaces. Composites, however, have better damping properties
than structural metals and cannot be neglected. Typically, the range of composite damping begins
where the best damped metal stops.In the present work, theoretical analysis was done on various
polymer matrix composite (glass fibre polyesters) with riveted joints by varying initial conditions.
Strain energy loss was calculated to calculate the damping in composites. Using FEA model, load
variation w.r.t time was observed and the strain energy loss calculated was utilised in finding the
material damping for Carbon fibre epoxy with riveted joints. Various simulations were performed in
ANSYS and these results were utilised to calculate the loss factor, Rayleigh‘s damping constants
and logarithmic decrement.
IRJET- Experimental Investigation of Fiberglass Reinforced AluminiumIRJET Journal
The document describes an experimental investigation of fiberglass reinforced aluminum composite material. Specifically, it examines different patterns and thicknesses of aluminum sheets laminated with fiberglass layers. Tests are performed on specimens to evaluate the impact and bending performance and compare how the material properties are affected by the pattern and thickness. The goal is to develop a strong hybrid composite suitable for structural applications by optimizing the fiberglass and aluminum configuration.
IRJET- Experimental Investigation and Analysis of Glass Fiber Epoxy Reinforce...IRJET Journal
This document experimentally investigates and analyzes glass fiber epoxy reinforced with rubber and wood powder composites. Samples were fabricated with different filler concentrations using hand layup. Mechanical tests including tensile, compression, impact, and water absorption were performed based on ASTM standards. Test results found that 20% weight filler content provided the best results for compression and tensile strength. Finite element analysis using ANSYS showed that the glass fiber composite with rubber and wood powders exhibited higher strength, lower deformation and von mises strain compared to the glass fiber reinforced plastic under the same loads. It was concluded that the reinforced composite has improved mechanical properties and reduced weight compared to glass fiber reinforced plastic.
Fabrication and characterization of Polymer laminate composites reinforced wi...IJERA Editor
The present paper evaluate slaminatedcarbonbi-wove fibers Reinforced with vinyl ester composites. Vinyl ester was used as a matrix to prepare composites by in situ polymerization technique. Four planar layers were made simultaneously by keeping one over the other and each layer made sure to be weighed off by 15% which was maintained in all layers with different orientations. Pre-assumed Layer-1 is (50/50)50%,0º; Layer-2 is (35/35/30) 35% 0º, 35% +45º,30%,0;Layer-3is (25/50/25) 25% 0º, 50%+45º,25-45º; and Layer-4is (25/25/25/25) (25% 0º, 25% +45º,25% -45º,25% 90º.The composite was prepared with the help of hand layup technique. Test ready specimens were tested with the help of shearing machine in accordance with ASTM Standards .It was observed that vinyl ester made good interface with parent fiber material. Flexural strength and Tensile strength have improved up to 3rd layer and decreased afterwards whereas Flexural modulus and Tensile modulus have linearly increased up to 4th layer. Thermal stability and Glass transition temperature have also been found to be satisfactory for all the laminated layers. Chemical resistance was good for the entire chemicals except sodium hydroxide.
IRJET-Fabrication And Testing Of Aluminium Metal Matrix Composites Through St...IRJET Journal
This document discusses the fabrication and testing of aluminum metal matrix composites produced through stir casting technique. Magnesium and zinc particles were added to an aluminum alloy 6061 at volume fractions of 3%, 6%, and 9%. The composites were tested for tensile strength, compression strength, hardness, and bending. Tensile testing showed that ultimate tensile strength increased with higher particle content, reaching a maximum of 26.211 MPa for the 9% composite. Compression testing yielded a maximum strength of 20.976 MPa also for the 9% composite. Hardness values ranged from 104-119 Vickers hardness. The study concluded that stir casting can successfully produce aluminum composites with improved mechanical properties over the unreinforced alloy
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STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
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A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
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Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
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A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
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Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
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Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
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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:
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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.
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P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
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Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
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A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
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Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
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Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
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Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
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Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
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Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
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