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首页> 美国政府科技报告 >Railroad Rail Flaw Detection System Based on Electromagnetic Acoustic Transducers
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Railroad Rail Flaw Detection System Based on Electromagnetic Acoustic Transducers

机译：基于电磁声换能器的铁路轨道探伤系统

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The report describes the design, construction and preliminary testing of an ultrasonic inspection vehicle intended for the detection of flaws in railroad tracks that are in commercial service. It differs from existing inspection systems in that it employs an ultrasonic transducer that does not require any kind of coupling liquid between the sensor head and the rail. A computer has been incorporated into the data processing channel to allow recording of all the ultrasonic signals as well as for presenting the operator with deflections on a strip chart recorder that both act as alarm indications as well as provide information on the characteristics of the flaw. By permanently recording each ultrasonic response, the data can be reanalyzed at different sensitivity settings at a later time so that more detailed examinations of the track can be carried out off-line without interference with the normal use of the railroad.

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