Abstract
In this paper, the effects of post-cure on mechanical properties of plain woven glass fabric composites are investigated by means of the tensile test. The post-cure of composites was carried out in order to the post-cure duration at the constant temperature; 80℃ for 4,8,12,16,24h and non post-cure. It is found from the experimental results that the tensile strength and Young's modulus increased due to the post-cure. The stress-strain relation of post-cured specimen becomes linear due to increasing the adhesive strength of the fiber-matrix interface. It is clarified that the knee point stress of non post-cured specimen was higher than that of post-cured specimen. Transverse cracks are observed by the optical microscope to reveal the effect of post-cure on fracture behavior. It is found that transverse cracking in post-cured specimens initiate at higher strains than the strains in non post-cured specimen.
