Blucher Mechanical Engineering Proceedings

Maio 2014, vol.1, num.1 - 10th World Congress on Computational Mechanics
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DETECTION OF ARBITRARILY ORIENTED MULTIPLE CRACKS IN LONG SHAFTS

DETECTION OF ARBITRARILY ORIENTED MULTIPLE CRACKS IN LONG SHAFTS

Mitra, D M Joglekar S K Maiti M

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A method has been developed for detection of arbitrarily oriented multiple open cracks in a slender shaft or beam of circular section. The method is based on changes in the natural frequencies of torsion vibrations. It has been verified based on finite element data for shafts with two, three and four cracks. Case studies are presented for shafts with fixed-free and free-free end conditions. Maximum error in the prediction of location is 2 % and size is ~23%. The method can be useful for detection of arbitrarily oriented multiple cracks.

A method has been developed for detection of arbitrarily oriented multiple open cracks in a slender shaft or beam of circular section. The method is based on changes in the natural frequencies of torsion vibrations. It has been verified based on finite element data for shafts with two, three and four cracks. Case studies are presented for shafts with fixed-free and free-free end conditions. Maximum error in the prediction of location is 2 % and size is ~23%. The method can be useful for detection of arbitrarily oriented multiple cracks.

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DOI: 10.5151/meceng-wccm2012-18129

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Como citar:

Mitra, D M Joglekar S K Maiti M; "DETECTION OF ARBITRARILY ORIENTED MULTIPLE CRACKS IN LONG SHAFTS", p-808-821. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-18129

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