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Mode I interlaminar fracture behavior of 2D woven ceramic matrix composites
Author(s) -
Mansour Rabih,
Morscher Gregory N.
Publication year - 2018
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13117
Subject(s) - materials science , composite material , wedge (geometry) , bridging (networking) , fracture toughness , ceramic , microstructure , composite number , fracture mechanics , ceramic matrix composite , transverse plane , structural engineering , geometry , computer network , mathematics , computer science , engineering
Interlaminar fracture properties of melt‐infiltrated woven SiC/SiC ceramic matrix composites were investigated using traditional and wedge‐loaded double cantilever beam methods. The two methods produced comparable G IC results for some specimens. The difference in boundary conditions between the two methods appeared to influence the crack propagation path. The DCB method, having free‐end boundary condition, allowed more interaction between the crack and the composite microstructure than the wedge method did. The effect of fiber tow layout sequence had an effect on the interlaminar properties. Higher toughness was observed for the orientation where crack propagation occurs between planes with more transverse tows. Jump‐arrest phenomenon was found to have higher significance on the rising R‐curve behavior than fiber bridging.