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Fracture Process of Silicon Carbide Fiber‐Reinforced Glasses
Author(s) -
Tsuda Hiroshi,
Takahashi Jun,
Kemmochi Kiyoshi,
Hayashi Ryuichi
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb08975.x
Subject(s) - materials science , acoustic emission , composite material , fracture (geology) , ultimate tensile strength , silicon carbide , fiber , cracking , glass fiber
This paper evaluates the fracture process for fiber‐reinforced glasses under tensile loading. Two types of unidirectionally aligned Nicalon SiC‐fiber‐reinforced glass with different fiber coatings were examined. One channel acoustic emission (AE) measurement was employed during the tensile tests. Probabilistic fracture analysis as well as the replication technique were used to investigate the relation between the AE signals and fracture processes. The AE technique proved to be an effective method for observing fracture processes of the material systems studied. The fracture process could be distinguished in terms of the AE amplitude. AE signals with high amplitudes corresponded to fiber breaking; AE signals with low amplitudes corresponded to matrix cracking, interfacial debonding, and fiber pullout. In the well‐toughened material studied the reinforcing fibers would break extensively over 75% load of the ultimate strength.