Structural Engineering and Mechanics

  • 제33권5호
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  • Pages.543-560
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  • 2009
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Crack identification in short shafts using wavelet-based element and neural networks

  • Xiang, Jiawei (School of Mechantronic Engineering, Guilin University of Electronic Technology, State Key Laboratory for Manufacturing Systems Engineering (Xi'an Jiaotong University)) ;
  • Chen, Xuefeng (State Key Laboratory for Manufacturing Systems Engineering (Xi'an Jiaotong University)) ;
  • Yang, Lianfa (School of Mechantronic Engineering, Guilin University of Electronic Technology)
  • 투고 : 2007.09.27
  • 심사 : 2009.09.24
  • 발행 : 2009.11.30
⟨ 이전 논문 다음 논문 ⟩

초록

The rotating Rayleigh-Timoshenko beam element based on B-spline wavelet on the interval (BSWI) is constructed to discrete short shaft and stiffness disc. The crack is represented by non-dimensional linear spring using linear fracture mechanics theory. The wavelet-based finite element model of rotor system is constructed to solve the first three natural frequencies functions of normalized crack location and depth. The normalized crack location, normalized crack depth and the first three natural frequencies are then employed as the training samples to achieve the neural networks for crack diagnosis. Measured natural frequencies are served as inputs of the trained neural networks and the normalized crack location and depth can be identified. The experimental results of fatigue crack in short shaft is also given.

키워드

참고문헌

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