The effect of residual stresses and sample preparation on progressive debonding during the fiber push-out test

V. T. Bechel, N. R. Sottos

Research output: Contribution to journalArticlepeer-review

Abstract

Iterative finite-element analyses have been conducted to determine the debond length as a function of force during progressive debonding in fiber push-out tests. This procedure was applied to data from push-out tests on a steel/epoxy model composite. During push-out testing this composite debonded from the bottom (support) face of the sample. The modeling allowed debonding from the bottom and included pre-existing debonds caused by residual stresses and/or sample preparatiion. The predicted debond lengths were within 10% of the measured debond lengths. Evidence is also shown that cutting and polishing can cause debonds that are longer than one third of the sample thickness in samples with a relatively small diameter steel fiber.

Original languageEnglish (US)
Pages (from-to)1741-1751
Number of pages11
JournalComposites Science and Technology
Volume58
Issue number11
DOIs
StatePublished - Nov 1 1998

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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