Crack Identification of a Beam by Measurements of Natural Frequencies

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概要

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• A method based on measurements of natural frequencies is presented for determining the location and size of a crack in a beam. The crack is modeled as a rotational spring with sectional flexibility. By using the analytical transfer matrix method, characteristic equations for the system are obtained explicitly for different boundary conditions. These characteristic equations are functions of the eigenvalue (natural frequency), the location of the crack and its sectional flexibility. When any two natural frequencies in the system are obtained, the location and sectional flexibility can be determined from the characteristic equations. The crack size is then computed using the standard relationship between sectional flexibility and crack size.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-03-15

著者

• Lin Hai-Ping

  Department of Mechanical and Automation Engineering, Da Yeh University, 112 Shan-Jiau Rd., Dah-Tsuen, Changhwa, Taiwan 51505, R.O.C.

• Lin Hai-Ping

  Department of Mechanical and Automation Engineering, Da-Yeh University, 112 Shan-Jiau Rd., Da-Tsuen, Changhua, Taiwan 51505, R.O.C.

関連論文

• Accelerated Convergence Study of the Eigenvalue Problems with Limited Continuities
• Crack Identification of a Beam by Measurements of Natural Frequencies

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