Analytical stress singularities for a crack at a Bi- or triple junction of dissimilar materials with bilinear behavior

S. Shkarayev; E. Madenci; M. Ibnabdeljalil; M. P. Savruk

doi:10.1016/S0013-7944(00)00114-4

Analytical stress singularities for a crack at a Bi- or triple junction of dissimilar materials with bilinear behavior

S. Shkarayev, E. Madenci, M. Ibnabdeljalil, M. P. Savruk

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The reliability of electronic packages is strongly influenced by the interfacial thermo-mechanical stresses arising from temperature excursions during fabrication and operation. Understanding the mechanisms for relaxing these interfacial thermo-mechanical stresses through the use of appropriate material selection is critical to the enhancement of their reliability. Therefore, this study provides analytical solutions for the asymptotic stress field ahead of the interface crack tip emanating from the apex of a wedge composed of dissimilar materials exhibiting elastic and/or elastic-plastic deformations.

Original language	English (US)
Pages (from-to)	475-486
Number of pages	12
Journal	Engineering Fracture Mechanics
Volume	68
Issue number	4
DOIs	https://doi.org/10.1016/S0013-7944(00)00114-4
State	Published - Mar 1 2001

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/S0013-7944(00)00114-4

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AB - The reliability of electronic packages is strongly influenced by the interfacial thermo-mechanical stresses arising from temperature excursions during fabrication and operation. Understanding the mechanisms for relaxing these interfacial thermo-mechanical stresses through the use of appropriate material selection is critical to the enhancement of their reliability. Therefore, this study provides analytical solutions for the asymptotic stress field ahead of the interface crack tip emanating from the apex of a wedge composed of dissimilar materials exhibiting elastic and/or elastic-plastic deformations.

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Analytical stress singularities for a crack at a Bi- or triple junction of dissimilar materials with bilinear behavior

Abstract

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