The optimization of transducer layout in rail flaw detection

Lei Zhang, Xiaorong Gao, Wo Wang, Chaoyong Peng
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引用次数: 1

Abstract

The railway is a kind of large volume public transportation, and more and more attention is paid to the safety of rails nowadays. As the rail is subject to heavy cyclic loads of trains, it is easily broken in the long-term operations, and this will seriously affect the safety of the trains. As an important rail flaw detection method, ultrasonic testing has been widely utilized to ensure the safety of the rail. However, the existing programs of this method normally have problems such as the deflection angle of transducer, number of transducers and frequent replacement of transducer layout. A new method was proposed in this paper, which is based on both the conventional transducer and the phased array transducer. Matlab software and acoustics approach were employed to optimize the parameters and the deflection angle of transducers. Results show that this method is experimentally reasonable and it can meet requirements of rail flaw detection.
钢轨探伤中传感器布局的优化
铁路作为一种大体量的公共交通工具,其安全性越来越受到人们的重视。由于钢轨承受着列车较重的循环载荷,在长期运行中容易发生断裂,严重影响列车的安全运行。超声探伤作为钢轨探伤的一种重要手段,在确保钢轨安全方面得到了广泛的应用。但该方法现有的方案通常存在换能器偏转角度、换能器数量、换能器布置更换频繁等问题。本文提出了一种基于传统换能器和相控阵换能器的新方法。采用Matlab软件和声学方法对换能器的参数和转角进行了优化。实验结果表明,该方法是合理的,能够满足钢轨探伤的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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