Journal of Engineering Materials and Technology: Recent submissions
Now showing items 201-220 of 3257
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Failure of Porous Metals Based on Strain Energy Density Criterion
(The American Society of Mechanical Engineers (ASME), 2020)Porosity in metals is well known to influence the mechanical behavior, namely, the elastic response, the plastic behavior, and the material loading capacity. The main focus of the current work is to investigate the failure ... -
Investigation of the Mechanical Behavior of Electroless Ni–P–Ti Composite Coatings
(The American Society of Mechanical Engineers (ASME), 2020)To improve the toughness of Ni–P coatings, NiTi superelastic particles were introduced into the Ni–P matrix through the electroless co-depositing of Ni–P and Ti particles and annealing Ni–P–Ti coatings. The mechanical ... -
A Study of Improving the Formability of the Commercial Pure Titanium Foils
(The American Society of Mechanical Engineers (ASME), 2020)In order to obtain the optimum forming process for commercial pure titanium grade 2 foils, a series of tensile tests and micro scale limited dome height (µ-LDH) tests at four temperatures, and meso scale limited dome height ... -
Representative Volume Element for Mechanical Properties of Carbon Nanotube Nanocomposites Using Stochastic Finite Element Analysis
(The American Society of Mechanical Engineers (ASME), 2020)The aim of this study is to present a representative volume element (RVE) for nanocomposites with different microstructural features using a stochastic finite element approach. To that end, computer-simulated microstructures ... -
Uniaxial Ratcheting Assessment of 304 Stainless Steel Samples Undergoing Step-Loading Conditions at Room and Elevated Temperatures
(The American Society of Mechanical Engineers (ASME), 2020)The present study evaluates ratcheting response of 304 stainless steel samples subjected to various step-loading conditions at room and elevated temperatures using the kinematic hardening rules of Ohno–Wang (O–W), ... -
Influence of Assumed Strain Hardening Relation on Plastic Stress-Strain Response Identification From Conical Indentation
(The American Society of Mechanical Engineers (ASME), 2020)Instrumented indentation tests provide an attractive means for obtaining data to characterize the plastic response of engineering materials. One difficulty in doing this is that the relation between the measured indentation ... -
Validation of Hot Corrosion and Fatigue Models in HOTPITS
(The American Society of Mechanical Engineers (ASME), 2020)HOTPITS is a set of physics-based modeling tools for treating Type II hot corrosion in Ni-based superalloys. The methodology includes modeling the nucleation, growth, and coalescence of pits and microcracks as a random ... -
Influence of Inhomogeneous Deformation on Tensile Behavior of Sheets Processed Through Constrained Groove Pressing
(American Society of Mechanical Engineers (ASME), 2019)Constrained groove pressing (CGP) is a severe plastic deformation technique to produce the ultra-fine grained sheet. The inhomogeneous strain distribution and geometry variation induce differential mechanical properties ... -
Thermofluid Properties of Ti-6Al-4V Melt Pool in Powder-Bed Electron Beam Additive Manufacturing
(American Society of Mechanical Engineers (ASME), 2019)Electron beam additive manufacturing (EBAM) is a powder-bed fusion additive manufacturing (AM) technology that can make full density metallic components using a layer-by-layer fabrication method. To build each layer, the ... -
A Unit Cell Design Guideline Development Method for Meso-Scaled Periodic Cellular Material Structures
(American Society of Mechanical Engineers (ASME), 2019)Much research has been conducted on effective elastic properties of meso-scaled periodic cellular material (MPCM) structures; however, there is only limited research providing guidelines on how to develop improved unit ... -
Modeling and Optimization of Creep Behavior of Ni-Based Superalloys GTD-111 and IN-738LC Using Central Composite Design
(American Society of Mechanical Engineers (ASME), 2019)In this study, the effects of temperature, stress, and type of materials and their interactions on the creep rate and rupture time were investigated by using central composite design (CCD). An experimental plan for CCD ... -
Investigating Discrepancies in Vibration Bending Fatigue Behavior of Additively Manufactured Titanium 6Al-4V
(American Society of Mechanical Engineers (ASME), 2019)The vibration bending fatigue life uncertainty of additively manufactured titanium (Ti) 6Al-4V specimens is studied. In this investigation, an analysis of microscopic discrepancies between ten fatigued specimens paired by ... -
The Precise Determination of the Johnson–Cook Material and Damage Model Parameters and Mechanical Properties of an Aluminum 7068-T651 Alloy
(American Society of Mechanical Engineers (ASME), 2019)Al 7068-T651 alloy is one of the recently developed materials used mostly in the defense industry due to its high strength, toughness, and low weight compared to steels. The aim of this study is to identify the Johnson–Cook ... -
Mechanical Characterization and Modeling of Direct Metal Laser Sintered Stainless Steel GP1
(American Society of Mechanical Engineers (ASME), 2019)The additive manufacturing (AM) process is unique in that it can facilitate anisotropy because of the layer-by-layer deposition technique intrinsic to this process. In order to develop a component for a desired application, ... -
Numerical Investigation of the Origin of Anomalous Tensile Twinning in Magnesium Alloys
(American Society of Mechanical Engineers (ASME), 2019)It has been observed that tension twins (TTs) are triggered in rolled polycrystalline magnesium alloys under tensile loading applied along the rolling direction (RD) or the transverse direction. This is surprising because ... -
Analyses of Constitutive Behavior of As-Cast Aluminum Alloys AA3104, AA5182, and AA6111 During Direct Chill Casting Using Physically Based Models
(American Society of Mechanical Engineers (ASME), 2019)To understand the formation of direct chill (DC)-casting defects, e.g., butt curl and crack formation, it is essential to take into account the effect of temperature variation, strain rate, and their role in the constitutive ... -
Evaluation of High Strain Rate Characteristics of Metallic Sandwich Specimens
(American Society of Mechanical Engineers (ASME), 2019)An attempt is made to investigate the dynamic compressive response of multilayered specimens in bilayered and trilayered configurations, using a split Hopkinson pressure bar (SHPB) and finite element analysis. Two constituent ... -
Cold Metal Transfer Welding of AA6061 to AA7075: Mechanical Properties and Corrosion
(American Society of Mechanical Engineers (ASME), 2019)Cold metal transfer (CMT) welding provides many advantages for welding of dissimilar materials and thin sheets with its superior heat input control mechanism. In this study, AA6061 and AA7075 aluminum alloys were joined ... -
Effect of Underloads on Plasticity-Induced Crack Closure: A Numerical Analysis
(American Society of Mechanical Engineers (ASME), 2019)The effect of underloads is mostly quantified by the averaged effect on the fatigue crack growth rate, and the transient behavior is rarely investigated. The objective of this paper is to study the mechanisms behind the ... -
The Effect of Temperature on Puncture Resistance of Glass Cloth Reinforced Polyester Composites
(American Society of Mechanical Engineers (ASME), 2019)Reinforced polyester composites are widely used in many applications where puncture resistance is important. This research is aimed at understanding whether exposure to different temperatures, high and very low, affects ...