Journal of Engineering Materials and Technology
SCOPUS (1973-2024)SCIE-ISI
0094-4289
Cơ quản chủ quản: ASME , The American Society of Mechanical Engineers(ASME)
Lĩnh vực:
Mechanical EngineeringCondensed Matter PhysicsMechanics of MaterialsMaterials Science (miscellaneous)
Các bài báo tiêu biểu
Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile MediaWidely used constitutive laws for engineering materials assume plastic incompressibility, and no effect on yield of the hydrostatic component of stress. However, void nucleation and growth (and thus bulk dilatancy) are commonly observed is some processes which are characterized by large local plastic flow, such as ductile fracture. The purpose of this work is to develop approximate yield c... ... hiện toàn bộ
Tập 99 Số 1 - Trang 2-15 - 1977
A Continuous Damage Mechanics Model for Ductile FractureA model of isotropic ductile plastic damage based on a continuum damage variable, on the effective stress concept and on thermodynamics is derived. The damage is linear with equivalent strain and shows a large influence of triaxiality by means of a damage equivalent stress. Identification for several metals is made by means of elasticity modulus change induced by damage. A comparison with ... ... hiện toàn bộ
Tập 107 Số 1 - Trang 83-89 - 1985
Laws for Work-Hardening and Low-Temperature CreepThe true stress-strain curves of polycrystalline aluminum, copper, and stainless steel are shown to be adequately represented by an exponential approach to a saturation stress over a significant range. This empirical law, which was first proposed by Voce, is expanded to describe the temperature and strain-rate dependence, and is put on a physical foundation in the framework of dislocation ... ... hiện toàn bộ
Tập 98 Số 1 - Trang 76-85 - 1976
On the Microstructural Origin of Certain Inelastic ModelsA unifying program modeling the evolution of microstructures and their effects on the macroscopic response of materials is outlined. The new physical assumption introduced is the distinction among “normal” states associated with the parent lattice and “excited” states associated with the occurring microstructures. Both states are described by the usual balance laws of continuum mechanics p... ... hiện toàn bộ
Tập 106 Số 4 - Trang 326-330 - 1984
Measurement of Non-Uniform Residual Stresses Using the Hole-Drilling Method. Part I—Stress Calculation ProceduresThe 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
Tập 110 Số 4 - Trang 338-343 - 1988
In-Plane Stiffness and Yield Strength of Periodic Metal HoneycombsIn-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
Tập 126 Số 2 - Trang 137-156 - 2004
Combined Mode Fracture Toughness Measurement by the Disk TestThe 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
Tập 100 Số 2 - Trang 175-182 - 1978
Approximate Models for Ductile Metals Containing Nonspherical Voids—Case of Axisymmetric Oblate Ellipsoidal CavitiesThe aim of this paper is to extend the classical Gurson (1977) analysis of a hollow rigid ideal-plastic sphere loaded axisymmetrically to an ellipsoidal volume containing a confocal oblate ellipsoidal cavity. An “expansion” velocity field satisfying conditions of homogeneous boundary strain rate is used to derive a two-field estimate of the overall yield criterion. The latter is shown to b... ... hiện toàn bộ
Tập 116 Số 3 - Trang 290-297 - 1994
Application of Finite Element Calculations to Residual Stress MeasurementsThe 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
Tập 103 Số 2 - Trang 157-163 - 1981