Now showing items 31-40 of 73
Mechanical modeling of initiation of localized yielding under plane stress conditions in rigid-rigid polymer alloys
(Society of Plastics EngineersWiley Periodiocals, Inc., 1991-06)
Two-dimensional Finite Element Method simulations, which involve consideration of the nonlinearity of a material, have been conducted to gain understanding about the rigid-rigid polymer toughening concept we proposed. The ...
Annoucement of a Round Robin on the Analysis of the Peel Test
(Kluwer Academic Publishers; Springer Science+Business Media, 2002-04)
There is some controversy over the analysis of the peel test when there is significant plastic deformation. To resolve this controversy a round robin on its analysis is announced contributions to which are invited. Details ...
Toughening mechanisms in elastomer-modified epoxies
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1986-07)
The toughening mechanisms of elastomer-modified epoxies are examined by scanning electron microscopy, transmission electron microscopy, and optical microscopy, DGEBA epoxies toughened by various levels of several types of ...
Mixed-mode fracture analyses of plastically-deforming adhesive joints
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-07)
A mode-dependent embedded-process-zone (EPZ) model has been developed and used to simulate the mixed-mode fracture of plastically deforming adhesive joints. Mode-I and mode-II fracture parameters obtained from previous ...
Nonproportional loading effects on elastic-plastic behavior based on stress resultants for thin plates of strain hardening materials
(Elsevier, 1994)
A stress resultant constitutive law in rate form is constructed for power-law hardening materials. The change of plate thickness is considered in the constitutive law. The elastic-plastic behavior of a plate element based ...
Determining Mode-I Cohesive Parameters for Nugget Fracture in Ultrasonic Spot Welds
(Kluwer Academic Publishers; Springer, 2005-11)
Ultrasonic spot welds have been used as a model system to investigate how to determine the mode-I cohesive parameters associated with interfacial fracture of a spot weld. Numerical analyses indicated that, while multiple ...
Reduction of contact stress by use of relief notches
(Kluwer Academic Publishers; Society for Experimental Mechanics, Inc. ; Springer Science+Business Media, 1991-09)
The photoelastic method is used to investigate the possibility of relieving the large local stresses that develop in the corners of a right angled indenter compressing a semi-infinite body by inducing geometric changes to ...
Plane-strain mixed-mode near-tip fields in elastic perfectly plastic solids under small-scale yielding conditions
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-10)
Within the context of the small-strain approach, plane-strain mixed-mode near-tip fields of a stationary crack in an elastic perfectly plastic Mises solid under small-scale yielding conditions are examined by finite element ...
An acoustic emission study of plastic deformation in polycrystalline aluminium
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1979-01)
Acoustic emission experiments were performed on polycrystalline and single crystal 99.99% aluminium while undergoing tensile deformation. It was found that acoustic emission counts as a function of grain size showed a ...
Partial closure of cracks at the interface between a layer and a half space
(Elsevier, 1983)
The paper treats the crack at the interface between a layer and a substrate. Using a formulation based on dislocations, the problem is reduced to a pair of singular integral equations which can be solved numerically. It ...