As the interlaminar strength is depend on the strength of matrix between fiber tows, the presence of the interlaminar voids may has an impact on the interlaminar shear strength (ILSS) and fatigue strength, which can be investigated in future study.
Reduction in Interlaminar Shear Strength by Discrete and Distributed Voids," Composites Science and Technology, 56: 93-101, 1996, doi: 10.
The value of the interlaminar shear strength obtained for microwave cured composite is found to be slightly higher than those cured thermally, possibly signifying that the microwave curing improves the interfacial bonding between the Kevlar fibre reinforcement and polyester matrix.
The interlaminar shear strength (ILSS) increased by 19% and compressive strength was increased by 2%, however, this increase was not profound as it comes in the range of experimental errors.
Analysis of five-point bending for determination of the interlaminar shear strength
of unidirectional composite materials.
Researchers at the Georgia School of Technology in Atlanta found that interlaminar shear strength
could be increased two or threefold by electromechanically surface treating the fibers with ammonium nitrite solution for about 10 min.
The interlaminar shear strength
was calculated based on beam theory, as follows:
The mechanical properties of composites and interlaminar shear strength
were carried on according to ASTM D-2344.
bars of pultruded phenolic or polyester reinforced with about 70% glass roving, the phenolic composite showed an interlaminar shear strength
of 6060 psi vs.
They noted significant improvement in the interlaminar shear strength
of electrocoated fiber-epoxy composites over the commercially sized fiber-epoxy composites (1).
The free fiber loops on the surface of the material enhance its ability to bond to adjacent layers in a laminate, reportedly producing increased interlaminar shear strength
and exceptional impact resistance.
IIC]) usually reflects the interlaminar shear strength
of the laminate.