期刊
JOURNAL OF SOUND AND VIBRATION
卷 276, 期 1-2, 页码 195-214出版社
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2003.07.021
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This paper deals with the identification of a single open crack in a vibrating beam, either under axial or bending vibration, based on measurements of damage-induced shifts in natural frequencies and antiresonant frequencies. It is found that an appropriate use of frequencies and antiresonances may avoid the non-uniqueness of the damage location problem, which occurs in symmetrical beams when only frequency data are employed. The theoretical results are confirmed by a comparison with dynamic measurements on cracked steel beams under free-free boundary conditions. (C) 2003 Elsevier Ltd. All rights reserved.
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