Thermally induced delamination of multilayers

Bent F. Sørensen, S. Sarraute, O. Jørgensen, A. Horsewell

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Steady-state delamination of multilayered structures, caused by stresses arising during processing due to thermal expansion mismatch, is analyzed by a fracture mechanics model based on laminate theory. It is found that inserting just a few interlayers with intermediate thermal expansion coefficients may be an effective way of reducing the delamination energy release rate. Uneven layer thickness and increasing elastic mismatch are shown to raise the energy release rate. Experimental work confirms important trends of the model.
    Original languageEnglish
    JournalActa Materialia
    Volume46
    Issue number8
    Pages (from-to)2603-2615
    ISSN1359-6454
    DOIs
    Publication statusPublished - 1998

    Keywords

    • interface crack
    • plates
    • gradients
    • edge-cracking

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