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The mechanical performance of cross‐plied composites
Author(s) -
Lavengood R. E.,
Ishai O.
Publication year - 1971
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760110310
Subject(s) - materials science , composite material , brittleness , epoxy , stiffness , toughness , transverse plane , perpendicular , tension (geology) , shear (geology) , ultimate tensile strength , structural engineering , geometry , mathematics , engineering
The mechanical performance of fiber glass epoxy, cross‐plied laminates having either ductile or brittle matrices, was evaluated in tension. The laminates with ductile matrices have higher initial strength, slower crack propagation in the transverse layers and higher ultimate stress and strain. In both the ductile and brittle systems, the laminae have higher strength, stiffness and toughness than equivalent unidirectional composites. This improved performance results from the interaction between the perpendicular layers which gives them additional stiffness due to shear and transverse coupling effects and also increases the resistance of each individual layer to crack propagation and plastic flow.