Defect characterization and failure load prediction of composite laminates using acoustic emission monitoring

Abstract

Composite materials are among the strongest lightest and stiffest newlinecorrosionresistant materials known to man Damage in composite materials newlinecan be localized to one of the constituents the two phases and the interphase newlineor affect the structure as a whole There are several methods of characterizing newlineinternal damage within composite materials One of the most widely used newlinerelease of transient elastic waves in solids as a result of rapid localized newlineredistributions of stresses which accompany the operation of damage newlinecan evaluate damage by detecting the newlineemitting strain energy when elastic waves are generated by the generation and newlinegrowth of a crack plastic deformation fiber breakage matrix cleavage or newlinedelamination newline newline