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《Journal of Civil,Architectural & Environmental Engineering》 2009-04
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Damage Identification for Guyed Mast Based on WVD Cross-term Statistic Distinction

ZHOU Ling,CHENG Hua,WANG Zhong-gang,HUANG Shuang-jie (Dept.of Civil Engineering,Logistical Engineering University,Chongqing 40041,P.R.China)  
The relative alteration of Wigner-Ville Distribution cross-term statistic was proposed for damage detection of guyed masts.And numerical analysis and experimental study were carried out with the case of the aero-navigating guyed mast in Fuling District.It was found that not only the shaft's damage of different location and degree,but also the local damage of different type could be identified with the relative alteration of WCS accurately.The accuracy and sensitivity of the identification can be improved by increasing the guy's initial pre-tensions.The damage identification test can quantify the damage extent of simulation.And it was indicated that the WCS index can identify the local damage of guyed mast and the results of damage identification were in good agreement with those of numerical analysis.
【Fund】: 总后勤部“十五”重点项目(QJ-00131);; 重庆市自然科学基金资助项目(CSTC 2006BB3127)
【CateGory Index】: TU347
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