Bridging Mechanisms in a Tiβ21s/SCS-6 Composite: In-Situ Scanning Electron Microscopy Study

Jun Liu, Paul Bowen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The physical nature of fiber bridging in a Tibeta21 s/SCS-6 composite has been studied using in-situ loading in tension with, in a field-emission gun Scanning electron microscope (SEM). Single-edge-notched specimens were prefatigued under tension-tension to produce mode I bridged cracks and were then monotonically loaded in tension within the field emission gun SEM. Crack opening displacements (CODs) were measured, and the response of the fiber-matrix interface to the applied load was examined. The results confirm that load transfer does occur along debonded fiber-matrix interfaces but also that the efficiency of such load transfer varies with the position of the fiber along the crack path. Based on the information obtained, the physical nature of fiber bridging in the composite is discussed.
Original languageEnglish
Pages (from-to)1193-1202
Number of pages10
JournalMetallurgical and Materials Transactions A
Volume34A
DOIs
Publication statusPublished - 1 May 2003

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