Damage Diagnosis of Radial Gate Based on Modal Strain Energy

Author:

Zhang Jian Wei1,Zhang Yi Na2,Cheng Sheng Zhao3

Affiliation:

1. North China University of Water Conservancy and Electric Power

2. Yellow river conservancy technical institute, China

3. North China University of Water Resources and Electric Power

Abstract

Non-destructive testing and safety monitoring of structure has been a hot and difficult engineering research problems, and an effective extraction of damage characteristic factor is a critical and theoretical research on structural damage detection and monitoring technology. The basic theory of modal strain energy and the steps to damage diagnosis are discussed in the paper.A a radial gate with different damaged locations and damaged degree is studied,and the results show that modal strain energy can be used as structural damage location sensitive factor,and that the indicator can be a very good identification of the location and extent of structural damage,and that the results of damage diagnosis are clear and reliable.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

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2. Guo Huiyong, Zhang Ling, Zhou Jinxiong. Identificationof structural multiple damaged locations based on Dumpster-Shafer theory of weighted balance of evidence,. Engineering Mechanics, vol. 22(2005), pp.235-240.

3. ZengGuangwu, XiaoWei, Cheng Yuansheng, SOUND ISOLATION OF COMPOSITE STRUCTURE CONSISTING OFMULTI PHONONIC CRYSTALS, JOURNAL OFVIBRATION AND SHOCK, vol. 26(2007), pp.84-86.

4. Kaouk M, Zimmerman D C, Simmermacher T W, Assessment of damage affecting all structural properties using experimental modal parameters, Journal of Vibration and Acoustics, Transactions of the ASME(2000), pp.456-462.

5. Ojalvo I U, Pilon D, Diagnostics for geometrically locating structural math model errors from modal test data. Proceedings of the 29th AIAA Structures, Structural Dynamics and Materials Conference, Williamsburg, (1988), pp.1174-1186.

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