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자료유형
학술저널
저자정보
Xiang, Jiawei (College of Mechanical & Electrical Engineering, Wenzhou University) Nackenhorst, Udo (Institute of Mechanics and Computational Mechanics, Leibniz Universitat Hannover) Wang, Yanxue (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology) Jiang, Yongying (College of Mechanical & Electrical Engineering, Wenzhou University) Gao, Haifeng (College of Mechanical & Electrical Engineering, Wenzhou University) He, Yumin (College of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제14권 제3호
발행연도
2014.1
수록면
397 - 418 (22page)

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In this paper, a simple two-step method for structural vibration-based health monitoring for beam-like structures have been extended to plate-like structures with though-thickness cracks. Crack locations and severities of plate-like structures are detected using a hybrid approach. The interval wavelet transform is employed to extract crack singularity locations from mode shape and support vector regression (SVR) is applied to predict crack serviettes form crack severity detection database (the relationship of natural frequencies and crack serviettes) using several natural frequencies as inputs. Of particular interest is the natural frequencies estimation for cracked plate-like structures using Rayleigh quotient. Only the natural frequencies and mode shapes of intact structures are needed to calculate the natural frequencies of cracked plate-like structures using a simple formula. The crack severity detection database can be easily obtained with this formula. The hybrid method is investigated using numerical simulation and its validity of the usage of interval wavelet transform and SVR are addressed.

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