In-Plane Vibration and Crack Detection of a Rotating Shaft-Disk Containing a Transverse Crack

Ming-Chuan Wu; Shyh-Chin Huang

doi:10.1115/1.2893864

Journal of Vibration and Acoustics | Volume 120 | Issue 2 | Research Paper

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RESEARCH PAPERS

In-Plane Vibration and Crack Detection of a Rotating Shaft-Disk Containing a Transverse Crack

Ming-Chuan Wu and Shyh-Chin Huang

[+] Author and Article Information

Ming-Chuan Wu, Shyh-Chin Huang

Department of Mechanical Engineering, National Taiwan Institute of Technology, 43 Kee-Lung Rd., Sec. 4, Taipei, Taiwan 106, Republic of China

J. Vib. Acoust 120(2), 551-556 (Apr 01, 1998) (6 pages) doi:10.1115/1.2893864 History: Received June 01, 1994; Revised December 01, 1996; Online February 26, 2008

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Abstract

Dynamic response and stability of a rotating shaft-disk containing a transverse crack is investigated. FFT analysis of response amplitudes showed that the 2Ω component (Ω: rotation speed) was excited by crack breathing and could serve as a good index for crack identification. Intensive numerical studies of crack location, crack depth, rotation speed, and sensing position on response amplitudes displayed a feasible technique for the identification of crack depth and crack location. It is achieved by intersecting the two equi-amplitude response curves of two separated sensing probes. Finally, the instability of the system caused by a crack is examined via Floquet theory and the multiple scale method. The stability diagrams, illustrated as functions of crack depth, rotation speed, and damping, are shown and discussed.

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Wu M, Huang S. In-Plane Vibration and Crack Detection of a Rotating Shaft-Disk Containing a Transverse Crack. ASME. J. Vib. Acoust. 1998;120(2):551-556. doi:10.1115/1.2893864.

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In-Plane Vibration and Crack Detection of a Rotating Shaft-Disk Containing a Transverse Crack

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