Journal of Engineering Materials and Technology: Recent submissions
Now showing items 801-820 of 3257
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Minimizing Defects Between Adjacent Foils in Ultrasonically Consolidated Parts
(The American Society of Mechanical Engineers (ASME), 2010)Two types of defects normally occur in ultrasonically consolidated parts: (i) Defects that occur between mating foils in successive layers (“type 1” defects) and (ii) defects that occur within ... -
Modeling of the Grain Shape Effect on the Elastic-Inelastic Behavior of Polycrystals With Self-Consistent Scheme
(The American Society of Mechanical Engineers (ASME), 2010)Based on a well established nonincremental interaction law for fully anisotropic elastic-inelastic behavior of polycrystals, tangent formulation-based and simplified interaction laws of softened ... -
Finite Element Thermal/Mechanical Analysis of Transmission Laser Microjoining of Titanium and Polyimide
(The American Society of Mechanical Engineers (ASME), 2010)Detailed analysis of a residual stress profile due to laser microjoining of two dissimilar biocompatible materials, polyimide (PI) and titanium (Ti), is vital for the long-term application of ... -
Micromechanics Study of Fatigue Damage Incubation Following an Initial Overstrain
(The American Society of Mechanical Engineers (ASME), 2010)Understanding and quantifying the effects of overloads/overstrains on the cyclic damage accumulation at a microscale discontinuity is essential for the development of a multistage fatigue model ... -
On the Effective Elastic Properties of Macroscopically Isotropic Media Containing Randomly Dispersed Spherical Particles
(The American Society of Mechanical Engineers (ASME), 2010)A computational scheme for estimating the effective elastic properties of a particle reinforced matrix is investigated. The randomly distributed same-sized spherical particles are assumed to result ... -
Determinist-Probabilistic Concept in Modeling Fatigue Damage Through a Micromechanical Approach
(The American Society of Mechanical Engineers (ASME), 2010)Motivated by a micromechanical determinist-probabilistic model coupled with damage recently developed by the authors, a new generalization is proposed to describe the nonlinear elasto-inelastic ... -
Hole-Drilling Strain-Gauge Method: Residual Stress Measurement With Plasticity Effects
(The American Society of Mechanical Engineers (ASME), 2010)When measuring residual stresses using the hole-drilling strain-gauge method, plasticity effects arise if the residual stress level exceeds about 60% of the material yield strength. In this case ... -
Temperature and Load Ratio Effects on Crack-Growth Behavior of Austenitic Superalloys
(The American Society of Mechanical Engineers (ASME), 2010)The role of temperature and load ratio (R) on the crack propagation rate (da/dN) of Alloys 276 and 617 under cyclic loading was investigated. The results indicate that the rate of cracking ... -
A New Multiaxial Fatigue Life Prediction Model Under Proportional and Nonproportional Loading
(The American Society of Mechanical Engineers (ASME), 2010)Based on the critical plane approach, the drawbacks of the Wang–Brown (WB) model are analyzed. It is discovered that the normal strain excursion in the WB model cannot account for the additional ... -
Influence of Production Method on the Properties of Dual Phase Steel Tubes
(The American Society of Mechanical Engineers (ASME), 2010)Dual phase steel tubes can be produced by a variety of methods. In the present study, comparisons between dual phase steel tubes produced directly from a dual phase steel sheet and tubes ... -
Molecular Dynamics Simulations of Carbon Nanotube Interactions in Water/Surfactant Systems
(The American Society of Mechanical Engineers (ASME), 2010)The properties of nanocomposite materials depend on the dispersion of the nanoparticles/nanofibers within the matrix. The addition of surfactants and varied processing techniques are used to ... -
Quantitative Interfacial Energy Measurements of Adhesion-Promoted Thin Copper Films by Supercritical Fluid Deposition on Barrier Layers
(The American Society of Mechanical Engineers (ASME), 2010)A fivefold increase in adhesion energy is observed for poly(acrylic acid) (PAA) modified Cu/TaN interfaces in which the thin copper films are deposited by the hydrogen assisted reduction of ... -
Mechanism Based Creep Model Incorporating Damage
(The American Society of Mechanical Engineers (ASME), 2010)The increasing demand of reliable creep design for very long lives (exceeding 100.000 h), as those for high stress-low temperatures and high temperature-low stress regimes, requires a model ... -
The Effect of Applied Forging Pressure on Primary Structure Deformation in Rheology Forging Process With Solid Fraction Controlled A356 and AA2024 Alloys
(The American Society of Mechanical Engineers (ASME), 2010)Mechanical properties and microstructure of heat-treated samples of A356 and AA2024 aluminum alloys, which were rheoforged by varying the change in pressure and temperature were investigated, ... -
Epoxy Adhesives Modified With Nano- and Microparticles for In Situ Timber Bonding: Effect of Environment on Mechanical Properties and Moisture Uptake
(The American Society of Mechanical Engineers (ASME), 2010)The environmental stability of three room temperature cure epoxy adhesives was evaluated following exposure to temperatures of 20°C, 30°C, and 50°C at 95%RH, to 50°C in air ... -
Direct Fabrication of Hierarchical Microstructures on Metals by Means of Direct Laser Interference Patterning
(The American Society of Mechanical Engineers (ASME), 2010)We have studied the fabrication of hierarchical periodic microstructures on metals by means of direct laser interference patterning. A nanosecond pulsed Nd:YAG laser at 355 nm wavelength was ... -
An Elasto-Plastic Reformulation of the Theory of Critical Distances to Estimate Lifetime of Notched Components Failing in the Low/Medium-Cycle Fatigue Regime
(The American Society of Mechanical Engineers (ASME), 2010)This paper is concerned with a novel elasto-plastic reformulation of the Theory of Critical Distances (TCD) specifically devised to estimate lifetime of notched metallic materials (ferrous and ... -
Nanoindentation of Compliant Substrate Systems: Effects of Geometry and Compliance
(The American Society of Mechanical Engineers (ASME), 2010)Nanoindentation is widely used to characterize the mechanical and interfacial properties of thin film systems. However, the effects of substrate compliance on the indentation response of compliant ... -
The Relation of the Vickers Hardness With the Loading Stiffness of Instrumented Vickers Indentation of Metal Substrates
(The American Society of Mechanical Engineers (ASME), 2010)The present paper presents a relation between the vickers hardness HV and the loading stiffness C of instrumented vickers indentation of metal substrates. The relation is based on the fact ... -
A Phenomenological Constitutive Equation to Describe Various Flow Stress Behaviors of Materials in Wide Strain Rate and Temperature Regimes
(The American Society of Mechanical Engineers (ASME), 2010)A simple phenomenological constitutive model has been proposed to describe dynamic deformation behavior of various metals in wide strain rate, strain, and temperature regimes. The formulation of ...