Abstract
As a short-fiber reinforced PET composite has excellent properties such as low cost, light weight and high strength, the composite has been used in many fields of industries. When the composite is used for machine elements parts, reliability and safety are needed. In this paper, the relationship between the fracture behavior and the acoustic emission characteristics is investigated by static tensile and tensile fatigue tests and by fractographs. It is found that the AE event count rate is a useful parameter to represent the pattern of macroscopic fatigue crack growth behavior and the AE frequency spectrum clearly corresponds to the microscopic fatigue fracture behavior of constituent elements.
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