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Proceedings Paper

Structural health monitoring techniques for detecting incipient buckling
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Paper Abstract

Among different failure modes observed in structures, loss of stability due to buckling is a major concern. Buckling may be induced because of overload or as a consequence of other types of failures in the structure. This paper examines two techniques, namely, vibration based analysis, and stress wave propagation analysis for detecting this onset of instability. The responses of a bar and a plate are used to illustrate the effectiveness of the two approaches. These analyses were performed through finite element simulations and limited experiments. Changes in vibration frequencies and mode shapes are found to provide good indications of the impending failure as well as its progress. Changes in the wave propagation characteristics showed some limited success in detecting the incipient buckling.

Paper Details

Date Published: 9 April 2010
PDF: 10 pages
Proc. SPIE 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010, 764910 (9 April 2010); doi: 10.1117/12.847808
Show Author Affiliations
Kassahun Asamene, North Carolina Agricultural and Technical State Univ. (United States)
Bashir Ali, North Carolina Agricultural and Technical State Univ. (United States)
Mannur Sundaresan, North Carolina Agricultural and Technical State Univ. (United States)


Published in SPIE Proceedings Vol. 7649:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010
Peter J. Shull; Aaron A. Diaz; H. Felix Wu, Editor(s)

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