Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
818644 | Composites Part B: Engineering | 2012 | 10 Pages |
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.
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Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Shigeki Yashiro, Keiji Ogi, Masashi Oshita,