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Proceedings Paper

Overview of vibrational-based nondestructive evaluation techniques
Author(s): Ji Yao Shen; Lonnie Sharpe Jr.; Amy L. Jankovsky
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Paper Abstract

Non-destructive damage detection is an important issue in almost all structural areas ranging from aerospace/aeronautical structures, civil infrastructures, and structural materials. The use of vibrational-based nondestructive evaluation techniques to locate structural damage has been attempted to evaluate the integrity of civil infrastructures, composite laminates, continuum structures, and especially aircraft and large space structures. In an attempt to develop a structural health monitoring system for rocket engines, hundreds of technical papers in the vibrational assessment area have been reviewed. This paper provides a comprehensive overview of various vibrational- based nondestructive evaluation techniques, including a brief introduction of the theoretical background of different methods, an analysis of their advantages and drawbacks, and a foresight of the applications of different methods towards different type of structures. To date most research into vibrational-based structural damage detection has been performed by a handful of researchers at a wide variety of sites with little or no coordination in research efforts. Many of these methods have been tested using mass- spring test models or simple planar truss models. Few of standard test problems truly embrace the essence of real- world structures and as such poor judges of the performance of a few method. There clearly is a gap between theoretical research and practical application. This paper would be considerably helpful for future research, and especially beneficial for the development of a structural monitoring system in choosing an applicable and realistic method as a basis.

Paper Details

Date Published: 31 March 1998
PDF: 12 pages
Proc. SPIE 3397, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II, (31 March 1998); doi: 10.1117/12.305042
Show Author Affiliations
Ji Yao Shen, North Carolina A&T State Univ. (United States)
Lonnie Sharpe Jr., North Carolina A&T State Univ. (United States)
Amy L. Jankovsky, NASA Lewis Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3397:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II
Glenn A. Geithman; Gary E. Georgeson, Editor(s)

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