Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Compressive Fracture Behavior of C/SiC composite fabricated by Liquid Silicon Infiltration

LSI 공법으로 제작된 C/SiC 복합재의 압축거동 평가

  • Yoon, Dong Hyun (Department of Mechanical Engineering, Chungnam National University) ;
  • Kim, Jae Hoon (Department of Mechanical Engineering, Chungnam National University)
  • Received : 2017.10.06
  • Accepted : 2018.02.05
  • Published : 2018.02.28
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Abstract

The effects of the fiber direction, specimen size and temperature on the compressive strength of carbon fiber reinforced silicon carbide composite (C/SiC composite) manufactured by liquid silicon infiltration(LSI) is investigated. Tests were conducted in accordance with ASTM C 695 at room temperature and elevated temperatures. Experiments are conducted with two different specimens considering grain direction. With grain (W/G) specimens have a carbon fibers parallel to the load direction, but across grain (A/G) specimens have a perpendicular carbon fibers. To verify the specimen size effect of C/SiC composite, two types of specimens are manufactured. One has a one to two ratio of diameter to height and the other has a one to one ratio. The compressive strength of C/SiC composite increased as temperature rise. As specimens are larger, compressive strength of A/G specimens increased, however compressive strength of W/G decreased.

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References

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