Affiliation:
1. Department of Metallurgical and Materials Engineering National Institute of Technology, Rourkela-769008, India
2. Department of Metallurgical and Materials Engineering National Institute of Technology, Rourkela-769008, India,
Abstract
The aim of the present study is to investigate the interlaminar fracture behavior of glass-reinforced polyester composites at liquid nitrogen temperature. Short beam shear (SBS) test, which generally promotes failure by interlaminar shear, was performed to assess interfacial bond strength between fiber and matrix. The mechanical assessment is extended to evaluate and compare the loading rate sensitivity of cryogenically conditioned and untreated glass/polyester composites at 2, 50, 100, 200, and 500 mm/min crosshead speeds. Microstructural changes after cryogenic treatment of glass/polyester composites were explained by scanning electron microscope (SEM). The behavior of these composites at cryogenic temperature may be attributed to stress relaxation, polyester curing shrinkage, large amount of residual stresses, cryogenic contraction of the matrix, greater misfit strains, and matrix crackings.
Subject
Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Cited by
7 articles.
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