High-velocity impact damage behavior of plain-woven SiC/SiC composites after thermal loading

Shigeki Yashiro, Keiji Ogi, Masashi Oshita

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

This study investigates characteristics of foreign-object damage in plain-woven SiC/SiC composites after thermal loading. High-speed impact tests were conducted on virgin specimens, thermally exposed specimens, and thermally shocked specimens, in which the maximum temperature during thermal loading was 600 °C or 1000 °C. An oxide layer was generated on the specimen surface by thermal loading at 1000 °C. Damaged areas on the front and back surfaces induced by particle impact were independent of thermal loading. However, in specimens thermally loaded at 1000 °C, brittle failure, i.e. cone cracking without fiber pull-out, occurred due to oxidation of the fiber/matrix interfaces, and the ballistic limit velocity significantly decreased. Finally, the ballistic limit is predicted using static strength properties, and the effect of thermal loading on impact resistance is discussed.
Original languageEnglish
Pages (from-to)1353-1362
Number of pages10
JournalComposites Part B: Engineering
Volume43
Issue number3
Publication statusPublished - Apr 2012

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