Investigation and modeling of the elastic-plastic fracture behavior of continuous woven fabric-reinforced ceramic composites | Zendy

W.K. Kahl | Zendy

Open Access

Investigation and modeling of the elastic-plastic fracture behavior of continuous woven fabric-reinforced ceramic composites

Author(s) -

W.K. Kahl

Publication year - 1997

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/486143

Subject(s) - materials science , composite material , fracture toughness , ceramic , ceramic matrix composite , composite number , pyrolytic carbon , fracture (geology) , fiber , chemical vapor infiltration , woven fabric , pyrolysis , engineering , waste management

The paper describes a study which attempted to extrapolate meaningful elastic-plastic fracture toughness data from flexure tests of a chemical vapor-infiltrated SiC/Nicalon fiber-reinforced ceramic matrix composite. Fibers in the fabricated composites were pre-coated with pyrolytic carbon to varying thicknesses. In the tests, crack length was not measured and the study employed an estimate procedure, previously used successfully for ductile metals, to derive J-R curve information. Results are presented in normalized load vs. normalized displacements and comparative J{sub Ic} behavior as a function of fiber precoating thickness

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