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The effect of temperature and loading rate on the mode II interlaminar fracture properties of a carbon fiber reinforced phenolic
Author(s) -
Berger L.,
Cantwell W. J.
Publication year - 2001
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10528
Subject(s) - materials science , composite material , crosshead , fracture (geology) , fracture toughness , composite number , quasistatic process , delamination (geology) , fiber , glass fiber , paleontology , physics , quantum mechanics , biology , subduction , tectonics
The combined effect of varying loading rate and test temperature on the mode II Interlaminar fracture properties of a carbon fiber reinforced phenolic resin has been investigated. End notch flexure tests at room temperature have shown that this composite offers a relatively modest value of G IIc NL at non‐linearity and that its interlaminar fracture toughness decreases with increasing loading rate. As the test temperature is increased, the quasistatic value of G IIc NL increases steadily and the reduction in G IIc NL with loading rate becomes less dramatic. At temperatures approaching the glass transition temperature of the phenolic matrix, the interlaminar fracture toughness of the composite begins to increase sharply with crosshead displacement rate. A more detailed understanding of the effect of varying the test conditions on the failure mechanisms occurring at the crack tip of these interlaminar fracture specimens has been achieved using the double end notch flexure (DENF) geometry.