Interlaminar shear damage mechanisms of a 2D-C/SiC composite at elevated temperature in vacuum

Chengyu Zhang, Hailing Wang, Yongsheng Liu, Shengru Qiao, Mei Li, Dong Han

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The aim of the study is to reveal the damage mechanisms of a plain woven carbon fiber cloth reinforced silicon carbide composite (2D-C/SiC) under interlaminar shear stress at elevated temperature. The interlaminar shear tests were carried out by compression of a double-notched specimen. Damage mechanisms were revealed by loading/unloading experiments. The damage evolution mainly involves the initiation and propagation of intra-bundle cracks, matrix cracking and emergence of the cracks. Release of the residual thermal stresses in the matrix and improved bonding of fiber/matrix interface enhance the resistance to initiate cracks. More cracks could be generated above the preparation temperature, and result in the degradation in interlaminar shear strength and crack initiation stress.

Original languageEnglish
Pages (from-to)63-68
Number of pages6
JournalVacuum
Volume105
DOIs
StatePublished - Jul 2014

Keywords

  • Carbon fiber reinforced silicon carbide composite
  • Damage
  • Interlaminar shear strength

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