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Non-destructive Testing of Concrete Based on Shortest Path Ray Tracing Algorithm
Author(s): 
Pages: 148-152
Year: Issue:  5
Journal: Highway

Abstract: 混凝土结构的无损检测对于桥梁安全来说意义非凡.无损检测技术的基本目的是在不损伤构件的前提下,检测出物体中的缺陷,并确定其位置、大小和性质.在混凝土无损检测中常用的是超声层析成像代数重建技术(ART).由于ART算法一般采用直线射线追踪,投影矩阵一经确定不再改变,不仅计算精度低,而且在异常体周边单元出现速度远离真值的现象.本文引人了最短路径(SPT)射线追踪,在每次ART迭代之前,利用 SPT射线追...
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