Journal of Engineering Materials and Technology: Recent submissions
Now showing items 581-600 of 3257
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A Thermodynamic Consistent Model for Coupled Strain Gradient Plasticity With Temperature
(The American Society of Mechanical Engineers (ASME), 2014)The mechanical responses of small volume metallic compounds are addressed in this work through developing a nonlocal continuum theory. In this regard, a thermodynamicbased higherorder straingradient plasticity framework ... -
Effect of Initial Texture on Rollability of Mg 3Al 1Zn Alloy Sheet
(The American Society of Mechanical Engineers (ASME), 2014)The influence of initial texture on rollability is investigated using cuneal AZ31 Mg alloy sheets. Upon large thickness reduction, the sheet with initial basal texture has many edge cracks, whereas the sheet is crackfree ... -
Creep Characterization of Ni Based Superalloy IN 792 Using the 4 and 6 خ¸ Projection Method
(The American Society of Mechanical Engineers (ASME), 2014)This paper studies the accuracy of a technique which is capable of predicting and modeling a wide range of creep life in Nibased superalloys. The خ¸projection method was applied to characterize the creep behavior of the ... -
Influence of Thermomechanical Parameters on the Hot Deformation Behavior of AA1070
(The American Society of Mechanical Engineers (ASME), 2014)The experimental stress–strain data from isothermal hot compression tests, in a wide range of temperatures (350–500 آ°C) and strain rates (0.005–0.5 s−1), were employed to develop constitutive equations in a ... -
Extension of Generalized Plasticity Model for Thermocyclic Loading
(The American Society of Mechanical Engineers (ASME), 2014)This work extends the generalized plasticity model for structural metals under cyclic loading proposed by Lubliner et al. (1993, “A New Model of Generalized Plasticity and its Numerical Implementation,†Int. J. Solids ... -
Editorial
(The American Society of Mechanical Engineers (ASME), 2014)I am honored to be named, the Editor in Chief for the ASME Journal of Engineering Materials and Technology. The journal has been in existence since 1973, and it is associated with the Materials Division of ASME. It has ... -
Material Behavior Modeling in Machining Simulation of 7075 T651 Aluminum Alloy
(The American Society of Mechanical Engineers (ASME), 2014)Accurate modeling of workpiece material behavior in machining is critical to analyze and design a process. The workpiece material behavior in the machining process involves dynamic flow stress and damage/fracture behavior, ... -
Focused Ion Beam Induced Surface Damage Effect on the Mechanical Properties of Silicon Nanowires
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, the effect of surface damage induced by focused ion beam (FIB) fabrication on the mechanical properties of silicon (Si) nanowires (NWs) was investigated. Uniaxial tensile testing of the NWs was performed ... -
Characterization of Flow Stress for Commercially Pure Titanium Subjected to Electrically Assisted Deformation
(The American Society of Mechanical Engineers (ASME), 2013)Uniaxial tension tests were conducted on thin commercially pure (CP) titanium sheets subjected to electrically assisted deformation using a new experimental setup to decouple thermal–mechanical and possible electroplastic ... -
Statistical Characteristics of Fatigue Failure of Copper Thin Films
(The American Society of Mechanical Engineers (ASME), 2013)Tension–tension fatigue tests were conducted on an electrodeposited copper film with a thickness of 12 خ¼m under four levels of maximum stress and two levels of mean stress. Statistical characteristics of the measured ... -
Conical Indentation of a Viscoelastic Sphere
(The American Society of Mechanical Engineers (ASME), 2013)Instrumented indentation is commonly used for determining mechanical properties of a range of materials, including viscoelastic materials. However, most—if not all—studies are limited to a flat substrate being indented ... -
Plasticity and Fracture Modeling/Experimental Study of a Porous Metal Under Various Strain Rates, Temperatures, and Stress States
(The American Society of Mechanical Engineers (ASME), 2013)A microstructurebased internal state variable (ISV) plasticitydamage model was used to model the mechanical behavior of a porous FC0205 steel alloy that was procured via a powder metal (PM) process. Because the porosity ... -
Analysis and Design of a Small, Two Bar Creep Test Specimen
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, a new smallsized (twobar) specimen type, which is suitable for use in obtaining both uniaxial creep strain and creep rupture life data, is described. The specimen has a simple geometry and can be conveniently ... -
Simulations of Anisotropic Grain Growth Subject to Thermal Gradients Using Q State Monte Carlo
(The American Society of Mechanical Engineers (ASME), 2013)The Qstate Monte Carlo, Potts model is used to investigate 2D, anisotropic, grain growth of singlephase materials subject to temperature gradients. Anisotropy is simulated via the use of nonuniform grain boundary surface ... -
Experimental and Numerical Modeling of Surface Indentation Response of Plastically Graded Materials
(The American Society of Mechanical Engineers (ASME), 2013)Materials with customized spatial gradients in mechanical properties are increasingly used in high performance applications requiring enhanced resistance to contact loads, wear, and fatigue. In many engineering materials, ... -
The Effect of Deposition Patterns on the Deformation of Substrates During Direct Laser Fabrication
(The American Society of Mechanical Engineers (ASME), 2013)The deformation of substrate caused by laser scanning pattern during direct laser fabrication (DLF) is ignored in spite of its importance to the final dimension accuracy. In this paper, in order to investigate the effect ... -
Thermomechanical Characterization of Low Density Foams for the ATLAS Upgrade
(The American Society of Mechanical Engineers (ASME), 2013)The increase of the luminosity of the Large Hadron Collider (LHC) by 2020 requires the upgrade of the ATLAS inner tracker experiment. Expected to be used as support structures in the design of the inner tracker, the thermal ... -
A Comparison of Constitutive Equations for the Energy Based Lifing Method
(The American Society of Mechanical Engineers (ASME), 2013)Alternatives to quasistatic and dynamic constitutive relationships have been investigated with respect to a previously developed energybased fatigue lifing method for various load profiles, which states: the total strain ... -
Forming Limits of a Sheet Metal After Continuous Bending Under Tension Loading
(The American Society of Mechanical Engineers (ASME), 2013)Forming limit diagrams (FLD) have been widely used as a powerful tool for predicting sheet metal forming failure in the industry. The common assumption for forming limits is that the deformation is limited to inplane loading ... -
Three Dimensional Constraint Effects on the Slitting Method for Measuring Residual Stress
(The American Society of Mechanical Engineers (ASME), 2013)The incremental slitting or crack compliance method determines a residual stress profile from strain measurements taken as a slit is incrementally extended into the material. To date, the inverse calculation of residual ...