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The influence of temperature on the impact behavior of unidirectional glass fiber‐epoxy composite
Author(s) -
Golovoy A.,
Van Oene H.
Publication year - 1986
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.750070111
Subject(s) - materials science , composite material , epoxy , composite number , glass fiber , drop (telecommunication) , fiber , atmospheric temperature range , delamination (geology) , shear (geology) , volume (thermodynamics) , thermodynamics , telecommunications , paleontology , physics , tectonics , biology , computer science , subduction
The influence of temperature on the impact behavior of unidirectional glass fiber‐epoxy composite was studied in the range of −20 and 150°C using a 3‐point drop weight test at a constant impact velocity of 2.2 m/s (5 mph). The impact energy per unit deformed volume was found to be very sensitive to the ratio length/thickness of the specimens. When the ratio was 4, the impacted specimens exhibited extensive delamination (shear failure) and the energy absorbed by the composite was about 14 MJ/m 3 between −20 and 100°C, and 18 MJ/m 3 at 150°C. At length/thickness above 16 the failure was mostly in tension, and the impact energy approached a constant value of about 3.5 MJ/m 3 , independent of temperature.