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Fracture of an Aluminosilicate Fiberboard
Author(s) -
Olbert Blain H.,
Schenck Steven R.
Publication year - 1997
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.1151-2916.1997.tb03195.x
Subject(s) - materials science , composite material , bridging (networking) , fracture toughness , aluminosilicate , transverse isotropy , fracture (geology) , isotropy , composite number , fiberboard , stiffness , optics , computer network , biochemistry , chemistry , physics , computer science , catalysis
Mode‐I fracture of aluminosilicate fiberboard that is used in large mirror casting molds was studied. The material was idealized as a transversely isotropic, layered composite that was composed of planar sheets of crosslinked fibers. Elastic constants, the toughness ( K R ) curve, and the fracture work were measured at room temperature. The observed rising K R behavior was attributed to crack bridging. Experimental measurements of the bridging stress were made using a specimen‐renotching technique. Relationships between the bridging stress, K R , and fracture work were explored and shown to be consistent.