K. Oguni et al., Failure mode transition in unidirectional E-glass/vinylester composites under multiaxial compression, J COMPOS MA, 34(24), 2000, pp. 2081-2097
Results from an experimental investigation on the mechanical behavior of a
unidirectional fiber reinforced composite with 50% volume fraction E-glass/
vinylester and the vinylester matrix under uniaxial and proportional multia
xial compression are presented. The stress-strain curve and the acoustic em
ission records together with the post-mortem observations on the specimen s
how the failure mode transition from axial splitting to kink band formation
as the loading condition changes from uniaxial to proportional multiaxial
compression. Axial splitting and "splitting induced" kink band formation we
re observed in the uniaxially loaded specimen and the multiaxially loaded s
pecimen showed conjugate kink bands and no axial splitting.