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Fatigue of glass‐fiber‐reinforced polyester laminates
Author(s) -
Ouellette Paul,
Hoa S. V.
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.750070112
Subject(s) - materials science , composite material , glass fiber , ultimate tensile strength , residual strength , protein filament , fiber , stress (linguistics) , residual stress , philosophy , linguistics
Materials used in making glass‐fiber‐reinforced plastic pressure vessels are tested in uniaxial tensile fatigue. Specimens of mat/woven roving/mat are tested with the warp direction parallel to the load axis and ±45 degrees to the load axis. Filament‐would specimens are tested at ±54.7 and ±35.3 degrees to the load. A stress ratio of R = 0.1 is used with load control. The residual properties of surviving specimens after 400,000 cycles indicate they have sustained no damage. The S ′‐ N curves show a strength loss of about 10 percent per decade of cycling. The failure mode of the filament‐would specimens is similar to that of angle‐ply laminates. Stress levels of one‐third the strength appear safe for the range of cycles investigated.