Journal of Engineering Materials and Technology: Recent submissions
Now showing items 261-280 of 3257
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Constitutive Equations and Finite Element Implementation of Isochronous Nonlinear Viscoelastic Behavior
(The American Society of Mechanical Engineers (ASME), 2018)We present a phenomenological three-dimensional (3D) nonlinear viscoelastic constitutive model for time-dependent analysis. Based on Schapery's single integral constitutive law, a solution procedure has been provided to ... -
An Investigation on Duplex Nucleation in AZ91 Magnesium Alloy and Its Influence on High Temperature Mechanical Properties
(The American Society of Mechanical Engineers (ASME), 2018)The grain refinement of Mg–Al alloy AZ91 via carbon inoculation, including the significant role of Mn in advanced nucleation, was analyzed, and the corresponding mechanical properties and aging behavior were investigated. ... -
Hybrid Hollow Microlattices With Unique Combination of Stiffness and Damping
(The American Society of Mechanical Engineers (ASME), 2018)Hybrid micro-architected materials with unique combinations of high stiffness, high damping, and low density are presented. We demonstrate a scalable manufacturing process to fabricate hollow microlattices with a sandwich ... -
Microstructure Modeling of Dynamically Recrystallized Grain Size of Sintered Al–4 wt % B4C Composite During Hot Upsetting
(The American Society of Mechanical Engineers (ASME), 2018)Grain size control of any engineering metal is very important in the hot upsetting process. Generally, the grain size directly controls the mechanical properties and performance of the material. Al–B4C composite finds ... -
A Probabilistic Approach to Investigate the Size and Boundary Condition Effects on the Fracture Response of Brittle Materials Loaded in Diametral Compression
(The American Society of Mechanical Engineers (ASME), 2018)The focus in this work is toward an investigation of the fracture response of brittle materials with different specimen size loaded in diametral compression using different boundary conditions. The compacted zone underneath ... -
Strain-Hardening Model of Dual-Phase Steel With Geometrically Necessary Dislocations
(The American Society of Mechanical Engineers (ASME), 2018)The strain-hardening behavior of metal during the uniaxial tension can be treated as the competing result of generation and annihilation of statistically stored dislocations (SSDs). Geometrically necessary dislocations ... -
Failure Modes in Hybrid Titanium Composite Laminates
(The American Society of Mechanical Engineers (ASME), 2018)Hybrid titanium composite laminates (HTCLs) combine the benefits of thin titanium sheets and fiber-reinforced polymer (FRP) composite laminates to design high performance light-weight materials with optimized impact ... -
Effect of Tailoring Martensite Shape and Spatial Distribution on Tensile Deformation Characteristics of Dual Phase Steels
(The American Society of Mechanical Engineers (ASME), 2018)The authors simulated the industrially used continuous annealing conditions to process dual phase (DP) steels by using a custom designed annealing simulator. Sixty-seven percentage of cold rolled steel sheets was subjected ... -
The Effect of Exfoliated Graphite on the Thermal and Mechanical Properties of Dynamically Vulcanized Polystyrene/Styrene Butadiene Rubber Composites
(The American Society of Mechanical Engineers (ASME), 2018)Exfoliated graphite (EG) was prepared from commercially available natural graphite flakes (NGF), through strong acid treatment followed by thermal shock at 950 °C. The EG sheets were characterized with respect to their ... -
Experimental Investigation and Constitutive Modeling for Hot Deformation Behavior of 2219 Al-Alloy Microalloyed With Silver
(The American Society of Mechanical Engineers (ASME), 2018)2219Al and 2219Al + 0.1 wt % Ag alloys were processed by casting route. The hot compression tests were carried out at constant true strain rates and temperatures in the range of 10−3 to 101 s−1 and 300–500 °C, respectively. ... -
Hot Deformation Behavior of Four Steels: A Comparative Study
(The American Society of Mechanical Engineers (ASME), 2018)The hot deformation behavior of four different steels in the as-cast condition was investigated by means of hot compression tests conducted at temperatures ranging from 1100 °C up to 1200 °C, and at strain rates in between ... -
A Model for Calculating Hyperelastic Material Properties Under Thermal Aging
(The American Society of Mechanical Engineers (ASME), 2018)Understanding the degradation of material properties and stress–strain behavior of rubberlike materials that have been exposed to elevated temperature is essential for rubber components design and life time prediction. The ... -
Quantum Conductance of Copper–Carbon Nanotube Composites
(The American Society of Mechanical Engineers (ASME), 2018)Carbon nanotube (CNT)-based conductors are the focus of considerable ongoing experimental research, which has demonstrated their potential to offer increased current carrying capacity or higher specific conductance, as ... -
Ab Initio Study of Iodine-Doped Carbon Nanotube Conductors
(The American Society of Mechanical Engineers (ASME), 2018)The widespread use of copper in power and data cabling for aircraft, ships, and ground vehicles imposes significant mass penalties and limits cable ampacity. Experimental research has suggested that iodine-doped carbon ... -
Effect of Helix Angle on Hydrogen Diffusion of Spiral Weld Pipe
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents a study of hydrogen diffusion for a spiral weld pipe considering the effect of weld residual stress. The results show that the hydrogen mainly gathers at heat-affected zone (HAZ). HAZ is the weakest ... -
MAGMASOFT Simulation of Sand Casting Process With EV31A Magnesium Alloy
(The American Society of Mechanical Engineers (ASME), 2018)Magnesium alloys with rare earth (RE) elements addition, modified with zirconium are used for cast, light-weight solutions for components applied at temperature up to 250–300 °C. Computational methods are often used by the ... -
Monte Carlo Model for Piezoresistivity of Hybrid Nanocomposites
(The American Society of Mechanical Engineers (ASME), 2018)Hybrid nanocomposites with multiple fillers like carbon nanotubes (CNT) and graphene nanoplatelets (GNP) are known to exhibit improved electrical and electromechanical performance when compared to monofiller composites. ... -
Precipitate Microstructure as an Indicator of Stress and Temperature Distributions in a Serviced Gas Turbine Blade
(The American Society of Mechanical Engineers (ASME), 2018)Superalloys are high temperature materials which are indispensable in many high temperature applications such as the gas turbines. IN738LC is a nickel-based superalloy that is extensively used in the hot sections of the ... -
Thermomechanically Tunable Elastic Metamaterials With Compliant Porous Structures
(The American Society of Mechanical Engineers (ASME), 2018)Adding programmable function to elastic metamaterials makes them versatile and intelligent. The objective of this study is to design and demonstrate thermomechanically tunable metamaterials with a compliant porous structure ... -
A New Video Extensometer System for Testing Materials Undergoing Severe Plastic Deformation
(The American Society of Mechanical Engineers (ASME), 2018)Characterization of materials undergoing severe plastic deformation requires the careful measurement of instantaneous sample dimensions throughout testing. For compressive testing, it is insufficient to simply estimate ...