轴压配合缺陷检测优化研究

Chaoyong Peng, Xiaorong Gao, Yang Yang, Ai Wang, Dong-dong Wu, Jia-yu Zhao
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引用次数: 0

摘要

轮对维修主要依靠超声无损检测技术来检测缺陷。车轮在轴上压紧或收缩,与裸轴相比,压紧对在役轴压紧部位的超声检测有显著影响。受压合界面复杂测试条件的限制,回波信号中存在较大幅度的噪声。本文通过仿真和轴检测实验以及滤波算法优化来提高信噪比。通过软件仿真和参考轴试验,优化了相控阵超声探头的参数和配置。利用相控阵超声对裸轴和压合轴进行了一系列缺陷检测实验。对超声信号进行处理和去噪算法,有效地提高了信噪比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on axle press-fit defects detection optimizing
The wheel-set maintenance mainly depends on ultrasonic nondestructive testing techniques to detect defects. Wheels are pressed or shrunk on the axle, and the press-fit has significant influence on ultrasonic detection at press-fit part of the in service axle comparing with bare axle. Limited by the complex testing conditions of the press-fit interface, higher amplitude noise is present in the echo signal. In this paper, simulation and axle detection experiments and filtering algorithms optimization are used to improve the signal-noise ratio. The phased array ultrasonic probe parameters and arrangements are optimized by software simulation and reference axle testing. A series of defect detection experiments between bare axle and axle with press-fit have been complemented by using phased array ultrasonic. Ultrasonic signal processing and denoising algorithm has been conducted to effectively improve the signal-noise ratio.
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