Incipient Crack Identification in Beam Structures Using the Slope of the Anti-Resonance Curve

Abstract:

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Crack damage brings a serious threat to the safety of mechanical and civil structures, and the problem of incipient damage identification of structures has been paying attention as a puzzle by many researchers in recent years. To seek for an alternative solution of the problem, a method for incipient crack localization using the slope of the anti-resonance curve is proposed in this paper. The method makes use of the driving-point mechanical impedance characteristics of cracked beams stimulated by harmonic force. To characterize the local discontinuity due to the presence of crack, a simplified rotational spring model is presented to model the crack. Subsequently, the proposed method is verified by a numerical example of cracked beam under simple support or cantilever boundary conditions.

Info:

Periodical:

Edited by:

L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz

Pages:

601-606

DOI:

10.4028/www.scientific.net/KEM.347.601

Citation:

D. S. Wang et al., "Incipient Crack Identification in Beam Structures Using the Slope of the Anti-Resonance Curve", Key Engineering Materials, Vol. 347, pp. 601-606, 2007

Online since:

September 2007

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Price:

$35.00

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