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Applications of PZT sensors and finite element analysis in defect detection in bars

机译:PZT传感器的应用及有限元分析在杆缺陷检测中的应用

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The use of PZT (lead titanate zirconate) sensors and the FEA (finite element analysis) technique for the detection of defects in steel bars is presented. The approach is based on the auto-and cross-correlation analysis of the measured and predicted longitudinal strain waves that are induced in the bars via the collinear impact of a spherical steel ball on a plane end of the bars. Defects are introduced in the bars in the form of slots of constant width but variable depth.
机译:介绍了PZT(铅钛酸铅锆酸锆)传感器和FEA(有限元分析)技术用于检测钢筋中的缺陷。该方法基于测量的和互相关分析的测量和预测的纵向应变波,通过球形钢球在杆的平面端部上的共线撞击在杆中被引起的。缺陷以恒定宽度但可变深度的槽的形式引入条中。

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