Distributed defect detection system using a unidirectional acoustic waveguide

Junru Wu; William B. Spillman Jr.

doi:10.1117/12.173958

1 May 1994 Distributed defect detection system using a unidirectional acoustic waveguide

Junru Wu, William B. Spillman Jr.

Proceedings Volume 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation; (1994) https://doi.org/10.1117/12.173958
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

Abstract

Many standard non destructive testing systems utilize ultrasonic pulse echo techniques to localize defects within structures. These techniques rely upon the scattering of acoustic energy by the defect and two or more acoustic detectors for localization. In this paper, an alternate method of structural damage detection and location is proposed. The technique involves the use of a leaky acoustic waveguide and a unidirectional acoustic waveguide attached to the structure of interest. Only one acoustic detector is required for defect location. An analysis of the concept is provided and experimental results are presented.

Citation Download Citation

Junru Wu and William B. Spillman Jr. "Distributed defect detection system using a unidirectional acoustic waveguide", Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); https://doi.org/10.1117/12.173958

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