Journal of Engineering Materials and Technology: Recent submissions
Now showing items 541-560 of 3257
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Characterization of Hydrogen Induced Contact Fracture in High Strength Steel
(The American Society of Mechanical Engineers (ASME), 2015)This study investigated the hydrogen embrittlement (HE) cracking behavior produced by local contact loading of highstrength steel. When a spherical impression was applied to a hydrogenabsorbed highstrength steel, HE induces ... -
A Modified Closed Form Energy Based Framework for Fatigue Life Assessment for Aluminum 6061 T6—Damaging Energy Approach
(The American Society of Mechanical Engineers (ASME), 2015)A previously developed energy based high cycle fatigue (HCF) life assessment framework is modified to predict the low cycle fatigue (LCF) life of aluminum 6061T6. The fatigue life assessment model of this modified framework ... -
Friction Stir Lap Welding of Aluminum to Steel Using Refractory Metal Pin Tools
(The American Society of Mechanical Engineers (ASME), 2015)Steel and Al were friction stir lap welded using two different W25% Re4% HfC pin tools, having two different pin diameters and pin lengths. The effects of plunge depth, bonding area, and top sheet positions on the ... -
Characterization of Nanoscaled TiO2 Produced by Simplified Sol–Gel Method Using Organometallic Precursor
(The American Society of Mechanical Engineers (ASME), 2015)This work is concerned with development of sol–gel method for preparation of nanoscaled TiO2 using organometallic precursor—titanium tetraisopropoxide (TTIP) and determination of the present crystalline phases depending ... -
Finite Element Analysis of Self Pierce Riveting in Magnesium Alloys Sheets
(The American Society of Mechanical Engineers (ASME), 2015)Conventional fusion joining methods, such as resistance spot welding (RSW), have been demonstrated to be ineffective for magnesium alloys. However, selfpierce riveting (SPR) has recently been shown as an attractive joining ... -
Synthesis, Characterization, and ECAP Consolidation of Carbon Nanotube Reinforced AA 4032 Nanocrystalline Composites Produced by High Energy Ball Milling
(The American Society of Mechanical Engineers (ASME), 2015)In the present work, multiwalled carbon nanotubes (MWNTs) were synthesized by electric arc discharge method in open air atmosphere. The synthesized nanotubes were subjected to multistep purification followed by characterization ... -
High Strain Rate Behavior of Graphene Reinforced Polyurethane Composites
(The American Society of Mechanical Engineers (ASME), 2015)A compressive split Hopkinson pressure bar (SHPB) was used to investigate the dynamic mechanical behavior of graphene (GR) reinforced polyurethane (PU) composites (GR/PU) at high strain rates ranging from approximately ... -
Laser Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy
(The American Society of Mechanical Engineers (ASME), 2015)Ultrasonic consolidation (UC) has been proven to be a suitable method for fiber embedment into metal matrices. To aid successful embedment of high fiber volumes and to ensure their accurate positioning, research on producing ... -
Estimating Lifetime of Notched Components Subjected to Variable Amplitude Fatigue Loading According to the Elastoplastic Theory of Critical Distances
(The American Society of Mechanical Engineers (ASME), 2015)The present paper is concerned with the use of the elastoplastic theory of critical distances (TCD) to perform the fatigue assessment of notched components subjected to inservice variable amplitude (VA) fatigue loading. ... -
Experimental Study on High Damping Rubber Under Combined Action of Compression and Shear
(The American Society of Mechanical Engineers (ASME), 2015)High damping rubber (HDR) is used in HDR bearings (HDRBs) which are dissipating devices in structural systems. These devices actually have to support permanent static load in compression and potential cyclic shear when ... -
Effects of Mn Content on the Deformation Behavior of Fe–Mn–Al–C TWIP Steels—A Computational Study
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents a doubleslip/doubletwin polycrystal plasticity model using finite element solution to investigate the kinetics of deformation twinning of medium manganese (Mn) twinninginduced plasticity (TWIP) steels. ... -
Compliant Cellular Materials With Elliptical Holes for Extremely High Positive and Negative Poisson's Ratios
(The American Society of Mechanical Engineers (ASME), 2015)Cellular materials' two important properties—structure and mechanism—can be selectively used for materials design; in particular, they are used to determine the modulus and yield strain. The objective of this study is ... -
Constitutive Relations for Modeling Single Crystal GaN at Elevated Temperatures
(The American Society of Mechanical Engineers (ASME), 2015)Thermal–mechanical constitutive relations for bulk, singlecrystal, wurtzite gallium nitride (GaN) at elevated temperatures, suitable for modeling crystal growth processes, are presented. A crystal plasticity model that ... -
Evaluation of Two Low Constraint Toughness Test Methods in a Single Specimen
(The American Society of Mechanical Engineers (ASME), 2015)In previous studies, the singleand doubleclip gauge methods were successfully consolidated in a singleedge notched tension (SE(T)) single specimen so that crack tip opening displacement (CTOD) values obtained from both ... -
Identification and Validation of a Low Cycle Fatigue Damage Model for Al 7075 T6 Alloy
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, the behavior of 7075T6 aluminum alloy under low cycle fatigue (LCF) loading is experimentally and numerically investigated using continuum damage mechanics (CDM). An experimental procedure is established to ... -
Microstructural Characterization of Chip Segmentation Under Different Machining Environments in Orthogonal Machining of Ti6Al4V
(The American Society of Mechanical Engineers (ASME), 2015)Segmented chips are known to form in machining of titanium alloys due to localization of heat in the shear zone, which is a function of machining environment. To investigate the correlation between machining environments ... -
Anisotropic Strain Hardening Behavior of Mg–5%Sn–1%Ca Alloy Sheet at Elevated Temperatures
(The American Society of Mechanical Engineers (ASME), 2014)Anisotropic strainhardening behavior of the TX51 (Mg–5Sn–1Ca) magnesium alloy sheets was investigated in the temperature range of 25–300 آ°C and at an initial strain rate of 5 أ— 10−4 s−1. Tensile tests ... -
Formability Evaluation of Microchannels of Aluminum Bipolar Plate Stamped Under Pulsating Load
(The American Society of Mechanical Engineers (ASME), 2014)The weight of a bipolar plate is one of the most crucial properties from the viewpoint of improving the power density of a protonexchange membrane fuel cell (PEMFC) stack. Aluminum alloys have good material characteristics ... -
Realistic Finite Element Simulations of Arc Height Development in Shot Peened Almen Strips
(The American Society of Mechanical Engineers (ASME), 2014)It is the objective of this study to conduct realistic simulations of the archeight development in shotpeened Almen strips using the finite element (FE) method. Unlike our earlier work which is devoted to relaxation of ... -
Overview of Enhanced Continuum Theories for Thermal and Mechanical Responses of the Microsystems in the Fast Transient Process
(The American Society of Mechanical Engineers (ASME), 2014)The recently growing demand for production and applications of microscale devices and systems has motivated research on the behavior of small volume materials. The computational models have become one of great interests ...