首页> 外文会议>IMAC Conference on Structural Dynamics >Experimental Localization of Small Damages Using Modal Filters
【24h】

Experimental Localization of Small Damages Using Modal Filters

机译:使用模态过滤器的小损伤的实验定位

获取原文

摘要

This work investigates the experimental application of a damage localization technique based on local modal filters on a small clamped-free steel plate equipped with eight piezoelectric (PVDFs) sensors, and excited with a PZT patch. A small damage responsible of a small shift of the eigenfrequencies (less than 4%) is introduced at different locations by fixing a stiffener. By following the guidelines established in previous numerical studies, the modal filters are applied on three local filters in order to locate damage, and a new feature extraction procedure is proposed. Univariate control charts are used to locate automatically all the damage positions correctly. The very nice results obtained with this first experimental application of modal filters based on strains show the real interest of this very simple method for output-only non-model based automated damage localization of real structures.
机译:这项工作调查了基于局部模态过滤器的局部模型钢板上的损伤定位技术的实验应用,配备了八个压电(PVDFS)传感器,并用PZT贴片激发。通过固定加强筋在不同位置引入对特征频率的小转移(小于4%)的小伤害。通过遵循在先前数值研究中建立的指导方针,模态过滤器施加在三个本地过滤器上,以定位损坏,并提出了一种新的特征提取程序。单变量控制图表用于正确定位所有损坏位置。基于菌株的型号滤波器的第一次实验应用获得的非常好的结果显示了这种非常简单的基于输出非模型的实际结构的自动损伤定位的真正兴趣。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号