In-situ damage monitoring of composite structures

Timothy E. Neary; Dryver R. Huston; Junru Wu; William B. Spillman Jr.

doi:10.1117/12.240862

30 May 1996 In-situ damage monitoring of composite structures

Timothy E. Neary, Dryver R. Huston, Junru Wu, William B. Spillman Jr.

Proceedings Volume 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation; (1996) https://doi.org/10.1117/12.240862
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

The feasibility of embedding piezoelectric transducers in composite panels for the measurement of phase velocities is presented. The theoretical dispersion curves for a composite panel are generated and the experimental measurements of phase velocities compared. In this paper the method for testing and for evaluating the experimental phase velocities is developed. The experimental methodology is validated by excellent agreement to theoretical values. This measurement methodology is used to detect holes drilled in composite plates to show the usefulness of the procedure. Signal losses of between 10% and 48% can be detected with this embedded transducer method.

Citation Download Citation

Timothy E. Neary, Dryver R. Huston, Junru Wu, and William B. Spillman Jr. "In-situ damage monitoring of composite structures", Proc. SPIE 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation, (30 May 1996); https://doi.org/10.1117/12.240862

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