Effective Thermomechanical Behavior of Plain-Weave Fabric-Reinforced Composites Using Homogenization TheoryJournal of Engineering Materials and Technology - Tập 116 Số 1 - Trang 99-105 - 1994
Abhijit Dasgupta, S. M. Bhandarkar
A micromechanical analysis is presented to obtain the effective macroscale orthotropic thermomechanical behavior of plain-weave fabric reinforced laminated composites based on a two-scale asymptotic homogenization theory. The model is based on the properties of the constituents and an accurate, three-dimensional simulation of the weave microarchitecture, and is used for predicting the ther...... hiện toàn bộ
Optimization of Material Properties and Process Parameters for Tube Hydroforming of Aluminum ExtrusionsJournal of Engineering Materials and Technology - Tập 129 Số 2 - Trang 233-241 - 2007
Adam Loukus, Ghatu Subhash, M. Imaninejad
Analysis of process optimization for hydroforming of central-bulge and T-branch from AA6063 tubes is conducted for W-temper and T4 heat-treated conditions. Systematic characterization of AA6063 mechanical properties as a function of aging time was also conducted. It was found that hydroforming in the W temper facilitates forming of a bigger T branch (due to available greater ductility), bu...... hiện toàn bộ
Mechanics and Physics of Brittle to Ductile Transitions in Fracture1Journal of Engineering Materials and Technology - Tập 123 Số 1 - Trang 1-11 - 2001
A. S. Argon
The mechanisms of brittle-to-ductile transition of fracture in intrinsically brittle crystalline solids such as structural steel have been of great technological interest for a long time. While much useful phenomenology on this important bifurcation behavior has evolved through material testing and alloy development throughout the period following the large scale fractures in Liberty ships...... hiện toàn bộ
Monte Carlo Model for Piezoresistivity of Hybrid NanocompositesJournal of Engineering Materials and Technology - Tập 140 Số 1 - 2018
Audrey Gbaguidi, Sirish Namilae, Daewon Kim
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. We developed a two-dimensional Monte Carlo percolation network model for hybrid nanocomposite with CNT and GNP fillers and utilized it to study the electrical conductivity ...... hiện toàn bộ
Measurement of Non-Uniform Residual Stresses Using the Hole-Drilling Method. Part I—Stress Calculation ProceduresJournal of Engineering Materials and Technology - Tập 110 Số 4 - Trang 338-343 - 1988
G. S. Schajer
The Incremental Strain, Average Stress, Power Series, and Integral methods are examined as procedures for determining non-uniform residual stress fields using strain relaxation data from the hole drilling method. Some theoretical shortcomings in the Incremental Strain and Average Stress methods are described. It is shown that these two traditional methods are in fact approximations of the ...... hiện toàn bộ
Combined Mode Fracture Toughness Measurement by the Disk TestJournal of Engineering Materials and Technology - Tập 100 Số 2 - Trang 175-182 - 1978
Hideo Araki, Sennosuke SATO
The disk test in which a circular specimen with an internal crack is subjected to diametral compression is used to investigate combined mode I and mode II fracture. The stress intensity factors in the disk test are calculated numerically by means of the boundary collocation procedure and the dislocation method. Special care was taken to analyze the effect of the compression anvils. This me...... hiện toàn bộ
Numerical Simulation on Concrete Median Barrier for Reducing Concrete Fragment Under Harsh Impact Loading of a 25-ton TruckJournal of Engineering Materials and Technology - - 2017
Lee, Jaeha, Zi, Goangseup, Lee, Ilkeun, Jeong, Yoseok, Kim, Kyeongjin, Kim, WooSeok
Application of Finite Element Calculations to Residual Stress MeasurementsJournal of Engineering Materials and Technology - Tập 103 Số 2 - Trang 157-163 - 1981
G. S. Schajer
The use of finite element calculations is assessed as a means of analysis of the strain relaxation data from a measurement of residual stress by a material removal method. This application is important because it allows a greater flexibility of choice for specimen shape, materials, and experimental procedure than would be possible if only analytic or experimental calibrations are used. Thr...... hiện toàn bộ
In-Plane Stiffness and Yield Strength of Periodic Metal HoneycombsJournal of Engineering Materials and Technology - Tập 126 Số 2 - Trang 137-156 - 2004
A.-J. Wang, David L. McDowell
In-plane mechanical properties of periodic honeycomb structures with seven different cell types are investigated in this paper. Emphasis is placed on honeycombs with relative density between 0.1 and 0.3, such that initial yield is associated with short column compression or bending, occurring prior to elastic buckling. Effective elastic stiffness and initial yield strength of these metal h...... hiện toàn bộ