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ACOUSTIC EMISSION STUDY ON FRACTURE MECHANISM OF SiC/Al COMPOSITE

Zhu Zumin

Abstract

Acoustic emission (AE) study on SiC/Al model composite which made the fracture sources simple has been carried out. AE characteristics from fracture sources have been measured. Three kinds of fracture in SiC/Al, fiber fracture, fracture of interface between fiber and matrix and matrix fracture have been recognized and distinguished by AE characteristics. A model proposed based on AE data and metallurgical examination explains the reason of why fracture sources have different AE behaviours.

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Available abstract

Key concepts: Acoustic emission, Materials science, Fracture (geology), Composite material, Composite number