Physical Interpretation and Development of Ultrasonic Nondestructive EvaluationTechniques Applied to the Quantitative Characterization of Textile Composite

摘要

The development and implementation of advanced ultrasonic nondestructiveevaluation methods applied to the characterization of composite materials requires a better understanding of the physics underlying the interaction of ultrasound with the material. The purpose of this investigation is to identify and characterize the features of complex, three dimensional materials that limit the ability of ultrasound to detect flaws in this broad class of emerging materials. In order to explore the interaction of ultrasound with such complex media, we investigate the characteristics of ultrasonic fields which have propagated through samples with complex geometries and/or internal architecture. We focus on the physics that underlies the detection of flaws in such materials.