Abstract
Two specified loads, Pb and Pc, of short-fiber-reinforced ABS composites with various fiber contents are determined by the stress intensity factor method. The loads of Pb and PC determined by this method are in good agreement with loads determined by the AE energy gradient method. The damage at the notch tip is observed through a monitor microscope at or near the loads of Pb and PC. The fiber breakage estimated from AE frequency analysis at the loads is considered to be the dominant factor of the damage mode. It was found that the loads of Pb and Pc are important parameters to clarify the fracture mechanisms of the composites.
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