5 November 2015 Multimode nondestructive detecting method for high-speed rail defects
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Proceedings Volume 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015; 979513 (2015) https://doi.org/10.1117/12.2214419
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held June-July 2015, 2015, Hefei, Suzhou, and Harbin, China
Abstract
It is very important to detect the surface defects of the high-speed rail for security concerns. A multimode detecting method, which integrates high resolution of optical image, high precision of photoacoustic detection and strong penetration of ultrasound detecting, is proposed for the rail defect detection. Utilizing the surface defect characteristics obtained from optical signal, the photoacoustic and ultrasound scanning region could be determined, and rail shallow and internal defect characteristics can be acquired subsequently. Eventually, fusing three modal signals mentioned above, the information of the entire rail defect, including type, extension trend and depth can be detected. It has been proved that the multimode method can improve the detecting efficiency, and enlarge the detection range in the meantime.
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Mingjian Sun, Mingjian Sun, Xingzhen Cheng, Xingzhen Cheng, Guangnan Wan, Guangnan Wan, Ting Liu, Ting Liu, Ying Fu, Ying Fu, Yan Wang, Yan Wang, "Multimode nondestructive detecting method for high-speed rail defects", Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 979513 (5 November 2015); doi: 10.1117/12.2214419; https://doi.org/10.1117/12.2214419
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