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FLEXURAL FATIGUE CHARACTERISTICS OF FRP SANDWICH BEAMS
Author(s) -
Shenoi R. A.,
Aksu S.,
Allen H. G.
Publication year - 1993
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1993.tb00109.x
Subject(s) - aramid , materials science , flexural strength , fibre reinforced plastic , beam (structure) , epoxy , composite material , structural engineering , core (optical fiber) , shear (geology) , fiber , engineering
The flexural fatigue characteristics of FRP sandwich beams are investigated. The skins of the beams are made from hybrid glass‐aramid fibres set in epoxy resin and the core material is made from linear PVC foam. The beams under investigation have practical applications in marine operations. The applied load is uniformly distributed throughout the length of the beam which is simply supported. From both static and fatigue tests, it is revealed that the failure occurred in the core due to excessive shear, in turn, resulting in large deflections. An empirical expression is derived to postulate a failure criterion.