SMART AGGREGATES USED FOR SEISMIC STRESS MONITORING IN CONCRETE STRUCTURES

摘要：

　　A smart aggregate(SA) using PZT material as the sensing element for compressive seismic stress monitoring is developed in this paper.The sensor consists of a piece of PZT sheet sandwiched by a pair of stone blocks through epoxy.Investigation of the sensors performance involves of the loading scheme in which the alternating stress superimposed on the compressive pre-stress are applied on the smart aggreagate by the servohydraulic test machine.The polarization process of the selected PZT material under pre-stress is investigated to decide the waiting time before calibration.The degradation of piezoelectric coefficient of PZT under pre-stress in range of 0-24MPa is evaluated.

关键词： Smart aggregates PZT compressive stress degradation

作者: Shuang Hou Haibin Zhang Jinping Ou

作者单位: Civil Engineering, Dalian University of Technology, Dalian 116024, P.R.China

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)

会议地点: 武汉

会议语种:英文

页码: 243-248

在线出版日期: 2012-11-17（万方平台首次上网日期，不代表论文的发表时间）