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267 articles for “pre-stressed materials”
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Micro-Stream Jetting Effect of Acoustic Cavitation during Sono-Electroplating of Thin Films: A Morphological Note
Abstract: In this study, copper thin films were electroplated onto laboratory grade aluminum substrate in presence of ultrasound and were then subsequently characterized by scanning electron microscopy. The macroscopic appearance reveals that the surface of the films had micron sized crater like holes. An initial analysis may direct to conclude that the hydrogen evolution might have caused so. However, microscopic examination on hole morphology, the nature of the flow of materials …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 2, Issue 1, 2015 · pp. 15–17 Read article
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An Investigation of Stress and Deformation States of Rotating Functionally Graded Spherical Pressure Vessels
Abstract: The present study deals with the analysis of rotating spherical pressure vessels made of functionally graded materials (FGMs). Material properties are graded along the radial direction, which is achieved by varying volume fractions of the constituting materials according to Mori-Tanaka scheme. Shells are subjected to hydrostatic internal pressure and have free boundary condition at the outer surface. Governing equations are derived using principle of stationary total potential. The effects of …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 3, 2017 · pp. 19–27 Read article
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Dielectric Breakdown and Electrical Aging of Insulating Polymer Materials in High Voltage Systems
Abstract: In this paper, a detailed analysis of dielectric breakdown and electrical aging behavior of high-voltage insulating polymer material has been proposed through sophisticated MATLAB simulation. The research involves electric field modeling, aging life prediction, partial discharge (PD) behavior and uncertainty modeling using Monte Carlo analysis. Electric field hotspots causing critical behavior, sensitivity of the lifespan to electric stress, and the stochastic PD build-up allow predictive diagnostics of the health of …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 173–187 Read article
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Study on GP Zones Formation in the Sc Inoculated Ternary Al-Zn-Mg Alloys
Abstract: Mostly, ternary Al-Zn-Mg (7075) alloys are used in automotive and aerospace engineering due to readily age-hardening response and high specific strength-to-density ratio. Scandium (Sc) has great inoculation effect in Al-Zn-Mg alloys. The cast Al-Zn-Mg alloys system undergoes a complex transition sequence in order to gain maximum strength. This sequence consists of solutionizing then immediate quenching in water (T4), natural ageing and artificial ageing (T6); usually, in several temperature steps to …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 53–69 Read article
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Advanced Modeling and Static Analysis of Inverted Umbrella Roof Shell Using ANSYS
Abstract: In this objective paper, an inverted umbrella roof shell are designing and modeling for the static analysis in ANSYS (15) using finite element method. The finite element analysis is carried by using total deformation and normal stresses in longitudinal direction and on X and Y plane to determine, respectively. Responses of umbrella roof shell results are linear and quadratic variation of the membrane displacements in the inverted direction are investigated …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 2, 2017 · pp. 31–35 Read article
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Fracture Analysis of Functionally Graded Material (FGM) Plates Using Extended Finite Element Method: A Review.
Abstract: Functionally Graded Materials (FGMs), have drawn a lot of interest in various engineering applications due to their superior mechanical properties and ability to withstand extreme conditions. Fracture analysis in FGMs focuses on understanding how cracks initiate and propagate within these complex materials. The stress distribution becomes irregular due to spatial property variations which produces different crack paths than what occurs in homogeneous materials. The examination of FGM plates under fracture …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 4, Issue 1, 2026 · pp. 9–15 Read article
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Mohr's circle for stress in planes and Stress-Strain Relation for Elasticity Equations and Stress-Strain Analysis
Abstract: The distribution of stress and strain in thin films and substrates resulting from inhomogeneous plane stresses created in the film during deposition is calculated and reported. The findings can be used to determine the unknown stresses in a film using the "bending plate method," which measures the deformation of the substrate surface By doing this, Theoretically, the local values of the stress tensor within the film plane and the centre …
Published in Journal of Experimental & Applied Mechanics · Vol. 13, Issue 2, 2022 · pp. 16–21 Read article
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Isogeometric Topology Optimization of Continuum Structures using Evolutionary Algorithms
Abstract: Isogeometric analysis is a popular method for the analysis of problems involving complex geometry and governed by differential equations. Meta-heuristics are widely used to determine the optimum distribution of material within the given design domain. The focus of this study is to perform isogeometric topology optimization of continuum structures using meta-heuristics nature inspired firefly algorithm. NURBS basis functions are used to construct the geometric model and to calculate the displacements …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 3, 2017 · pp. 8–18 Read article
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Influence of Supplementary Cementitious Materials on Chemical Shrinkage in Cement
Abstract: Chemical shrinkage is the volume reduction observed in cement during early hydration due to chemical reactions, which critically influences the internal stresses, cracking tendencies, and durability of cementitious system. Present study is focused on effect of supplementary cementitious material (SCM) on chemical shrinkage. Dilatometry method is used to assess the impacts of SCMs on chemical shrinkage, in this this study. The research incorporates experiments with laboratory-synthesized cement and three SCMs—fly …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 98–107 Read article
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Prediction of temperatures and residual stresses during FSW of AA2024 and AA7075 with copper using HYPERWELD software
Abstract: This paper investigates the temperature at different workpiece and tool pin sections. In this investigation, various materials are utilized, for example, AA7050, AA2024, and Copper, for other process parameters. Tool rotational speed, tool tilt angle, and welding speed are process parameters. Thermal distribution results are examined with the assistance of these process parameters. Altair’s Hyper Weld, a preeminent computer-aided engineering (CAE) application for the simulation of friction stir welding, has …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 101–112 Read article
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Integrated Analysis of Stress Patterns in Transparent Polycarbonate Specimens: A Comparative Study between Photoelasticity and FEA Simulation for Compact Circular Testing
Abstract: Photoelasticity stands as a robust experimental technique within the realms of mechanics and materials science, offering a means to visually assess and analyze stress distribution within materials possessing transparency or translucency. This method, a non-destructive testing approach, involves the visualization of stress on a model subjected to a load, leveraging the unique property of materials known as birefringence or double refraction. The procedure entails the careful selection of a suitable …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 79–87 Read article
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Incorporating Material Fatigue Parameter Determine in The Rolling & Sliding Contact Fatigue Analysis of Gears
Abstract: As the material's intricate stresses and strains are always shifting during phases of loading, determining the predicted equipment working under rolling-sliding contact loads and their fatigue lives (wheels, bearings, and gears) is particularly difficult. Another difficulty is not knowing the precise characteristics of the material used to make the components, which is particularly noticeable. when it comes to heat-treated components, where the material characteristics' values can differ greatly among the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 1–5 Read article
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Stress Analysis of Pressurized Thick Truncated Conical Shells with varying Modulus of Elasticity as Power Function
Abstract: Finite element method is applied using Ansys 14.0 Mechanical APDL for axisymmetric thick walled truncated cone made of Functionally Graded Material (FGM). The cone has finite length, and is subjected to axisymmetric hydrostatic internal pressure. The material is assumed to be isotropic with constant poisson's ratio and radially continuously varying elastic modulus along the thickness with a power function. Using this method the truncated cone under generalized clamped-clamped conditions has …
Published in Trends in Mechanical Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 6–16 Read article
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Finite Element Simulation of the Cold Open-Die Forging of Sintered Aluminum Metal Powder Trapezoidal Preforms
Abstract: This paper presents finite element simulation of the forging of sintered aluminium metal powder trapezoidal preforms at cold conditions. It involves basic experimental investigations followed by the finite element simulation of the forging process under consideration by the use of DEFORM. The basic experimental work includes the fabrication of compaction die-sets, production of aluminum metal powder trapezoidal preforms and simple compression test to obtain load-deformation data. The stress-strain data was …
Published in Trends in Mechanical Engineering & Technology · Vol. 1, Issue 2-3, 2011 · pp. 18–28 Read article
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Effect of PWHT Cycle on Microstructure and Mechanical Properties of 1.25Cr-0.5Mo Weld
Abstract: Post Weld Heat Treatment (PWHT) is a process of reducing residual stresses and enhancing material properties of any material after welding. The process depends on many parameters like type of material, the thickness of material, PWHT temperature, soaking time, heating and cooling rate, etc. The Post Weld Heat Treatment process of material could effect on tensile strength, impact toughness, hardness, microstructure, etc. If the Process of PWHT is performed incorrectly …
Published in Journal of Experimental & Applied Mechanics · Vol. 10, Issue 1, 2019 · pp. 7–16 Read article
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Viscoelastic Behavior, Interfacial Mechanics, and Reliability of Polymer Interlayers in Laminated Glass Composites: A Comprehensive Review
Abstract: The laminated glass systems are regarded as hybrid polymer–glass composites where the viscoelastic behavior of polymer interlayers mostly controls mechanical response. These interlayers (polyvinyl butyral (PVB), ionoplast, ethylene-vinyl acetate (EVA), etc.) have time-, temperature- and rate-dependent properties which significantly affect shear transfer, energy dissipation, and fracture resistance. But the baseline polymer-relevant processes at the molecular and interfacial level are to a large extent unknown [1]. This review provides a materials-focused …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 258–268 Read article
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Stress and Failure Analysis of Hybrid FRP Laminated Tubular Joints
Abstract: Composite tubes have been used in transporting corrosive fluid in petro chemical and paper industries. [Fiber reinforced Polymers] FRP Composite Pipes are even becoming popular in the offshore oil and gas industry. Bonded joints with tubular adherends are finding applications in various piping industry. In the recent times Hybrid Tubular Bonded Lap Joints (HTLJ) have been extensively used to optimize the cost and to enhance the performance of the joint. …
Published in Journal of Polymer & Composites · Vol. 13, Issue 3, 2025 · pp. 461–471 Read article
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Static and Dynamic Analysis on 5-Blade Marine Propeller
Abstract: Ships and underwater vehicles like submarine and torpedoes use propeller for propulsion. In general, propellers are used as propulsions and they are also used to progress significant plunge to propel the vehicle at its operational speed and RPM. Much has been said and published on the development of the marine propeller from the time of antiquity to the present age, but there is more to be done. This paper describes …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 14–25 Read article
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Effect of Post Weld Heat Treatment on Mechanical Properties and Microstructure of P11 Weld: A Review
Abstract: Post weld heat treatment (PWHT) is a process of reducing residual stresses and enhancing material properties of any material after welding. The process depends on many parameters like type of material, thickness of material, PWHT temperature, soaking time, heating and cooling rate, etc. Post weld heat treatment is a process of material that could result detrimental effects on tensile strength, yield strength, impact toughness, hardness, elongation, etc. If the process …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 3, 2017 · pp. 43–47 Read article
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Automotive Plastics and Polymer Composites: A Road Map for Future Mobility of Electric Vehicles
Abstract: The automotive industry is in the process of achieving a major shift toward green vehicles faster than ever with the heightened demand for energy efficient products, namely EVs. This evolution is closely linked with use of such composite materials like plastics and polymer composites. Lithium manganates and other similar materials provide extraordinary benefits such as lightweight, high density energy storage capability, and affordable to manufacture. Due to its advantages in …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 378–392 Read article