Crack Problems in Bonded Inelastic and Inhomogeneous Materials Subjected to Heat and Mass Diffusion

9/29/98


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Table of Contents

Crack Problems in Bonded Inelastic and Inhomogeneous Materials Subjected to Heat and Mass Diffusion

Contents

Cross-section of an EBPVD YSZ coating deposited on a superalloy substrate coated with an aluminide bond coat after exposure to oxidative environments

FGM seal failed by spallation after isothermal oxidation at 10000 C for 242 h in air

Plastic Integrated Circuit Packages

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SAM images showing deliminated interfaces between die pad and mold compound, Si chip and die pad

Delimination at the die pad/compound interface

Proposed Research

Problem Statement

Geometry of the Problem

Formulation

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FEM (FGM) Formulation

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(FEM) Enriched Element Formulation

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Author: BORA YILDIRIM

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