Delamination Risk Evaluation for Plastic Packages Based on Mixed Mode Fracture Mechanics Approaches

[+] Author and Article Information
J. Auersperg

AMIC Angewandte Micro-Messtechnik GmbH, 12489 Berlin, GermanyFraunhofer Institute IZM, Department of Mechanical Reliability and MicroMaterials, D-13355 Berlin, Germany

E. Kieselstein

CWM Chemnitzer Wekstoffmechanik GmbH, D-09117 Chemnitz, Germany

A. Schubert, B. Michel

Fraunhofer Institute IZM, Department of Mechanical Reliability and MicroMaterials, D-13355 Berlin, Germany

J. Electron. Packag 124(4), 318-322 (Dec 12, 2002) (5 pages) doi:10.1115/1.1501303 History: Received May 01, 2002; Online December 12, 2002
Copyright © 2002 by ASME
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Grahic Jump Location
Prismatic bi- or tri-material strip used for 3-point bending experiments (asymmetric loading)
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Results of correlation; deflection lines near and crack opening at the material interface
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Crack tip location tracked during loading (δ(t)) is growing with a constant rate)—different specimens and loading conditions
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Reaction force versus time curve typical for all specimens under symmetric as well as asymmetric 3-point bending
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ERR (from FEA) versus crack length (as observed by gray-scale correlation)
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Phase angle ΨK versus crack length (crack length as observed by gray-scale correlation)
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ERR of several material interfaces and different evaluation techniques used
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Dependence of ERR on crack length under constant loading (constant deflection)



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