Acoustic Emission of Graphite and Boron Fiber-Reinforced Aluminum Composites during Deformation and Fracture.
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
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Experimental acoustic emission techniques of sound detection and analyses of pulse rate and pulse count as a means of evaluating fiber-reinforced composites are discussed. Since the stress-strain relationship for the composite, before fracture, was also obtained using conventional mechanical tension test equipment, it was possible to detect that region strain where significant fiber fracture began for a particular composite specimen. The composite materials of interest included graphite fiber-reinforced aluminum alloy 7000, boron fiber-reinforced aluminum alloy 6061, and boron fiber-reinforced aluminum alloy 2024. Author
- Laminates and Composite Materials