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Application of FTP in flaw detection of rail web

机译:FTP在铁路网探伤中的应用

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In this paper, the author aims to use the Fourier transform profilometry(FTP), a three-dimensional non-contact optical measurement method, for recovering the rail profile and defects on the rail web. In phase unwrapping, the least square algorithm based on the specific characteristic of the rail is used. Simulation is done to manifest the feasibility of the method. Results of the experiments show that in restoring the rail profile and detecting the rail web's defects FTP have significant advantages, the simulation shows that the maximal error of the algorithm is 0.053mm, compared to some traditional surface detection method, it is able to achieve a higher accuracy, also provides a better basis and testing demonstration for the further application of the non-contact optical three-dimension measuring method on the rail.
机译:本文旨在使用三维非接触式光学测量方法傅里叶变换轮廓测量(FTP)来恢复钢轨轮廓和钢轨腹板上的缺陷。在相位展开中,使用基于轨道特定特性的最小二乘算法。通过仿真证明了该方法的可行性。实验结果表明,在恢复铁路轮廓和检测铁路腹板缺陷方面FTP具有明显的优势,仿真结果表明,与传统的表面检测方法相比,该算法的最大误差为0.053mm。更高的精度,也为非接触式光学三维测量方法在轨道上的进一步应用提供了更好的基础和测试证明。

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