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Elevated‐Temperature Fracture Characterization of Advanced Fibrous Ceramic Thermal Insulators
Author(s) -
OrtizLongo Carlos R.,
White Kenneth W.
Publication year - 1994
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.1151-2916.1994.tb04665.x
Subject(s) - materials science , composite material , fracture toughness , ceramic , microstructure , softening , fiber , fracture (geology) , characterization (materials science) , softening point , thermal , physics , meteorology , nanotechnology
The elevated‐temperature mechanical behavior of two low‐density fibrous ceramic thermal insulators is discussed. Fracture toughness and R ‐curve behavior are obtained from chevron notched bend bar and short double cantilever beam specimens, respectively. The fracture behavior is related to the bulk microstructures, the properties of the fibers, and the various fiber‐to‐fiber bond chemistries. A strong behavioral change at elevated temperatures is linked to the glass‐softening temperature of the multiphase structure characteristic of each material.