A Multi-Crack Identification Algorithm Based on Forced Vibrations from a Shaft System
A multi-crack identification algorithm has been developed based on the forced response from a shaft. Transverse vibrations of a cracked shaft in the two orthogonal planes are analyzed. The presence of cracks in a shaft introduces a local slope discontinuity in the elastic line of the shaft. This slope discontinuity is estimated by approximating the forced response of shaft at consecutive measurement axial locations by a polynomial. The algorithm is tested for numerically simulated responses from the FE modeling of a simply supported shaft having two cracks.
KeywordsCrack identification Multi-cracked shaft Forced response
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