利用激光超声表面波定量检测轨头斜裂纹

IF 0.9 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Russian Journal of Nondestructive Testing Pub Date : 2024-01-12 DOI:10.1134/S1061830923600740

Yi Jiang, Rongyao Wang, Lei Han, Zhaoxin Wang

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引用次数: 0

摘要

摘要疲劳斜裂纹是钢轨最常见的表面损伤类型，尽管它们微观且难以检测。钢轨裂纹会随着裂纹长度的增加而出现。本文提出了一种完全非接触、不受复杂表面影响的激光超声表面波检测方法。为解决激光超声波光声转换效率低、成像效果差的难题，提出了一种基于粒子群优化（PSO）的 VMD 参数优化算法与 Sobel 图像边缘处理算法相结合的解决方案。这不仅提高了信噪比（SNR）和图像精度，还能定量识别不同长度的斜裂隙。最高定量误差小于 4%，最小定量误差为 1.4%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Quantitative Detection of Rail Head Oblique Cracks by Laser Ultrasonic Surface Wave

查看原文本刊更多论文

Quantitative Detection of Rail Head Oblique Cracks by Laser Ultrasonic Surface Wave

Fatigue oblique cracks are the most common type of surface damage on steel rails, although they are microscopic and difficult to detect. Rail crack can occur as the crack length increases. This paper presents a method for detecting laser ultrasonic surface waves that is fully non-contact and unaffected by complicated surfaces. To solve the difficulties of low photoacoustic conversion efficiency and poor imaging impact of laser ultrasound, a solution combining particle swarm optimization (PSO) based VMD parameter optimization algorithm with Sobel image edge processing algorithm is presented. This enhances the signal-to-noise ratio (SNR) and image accuracy while also allowing for the quantitative identification of oblique fissures of varying lengths. The highest quantitative error is less than 4%, and the smallest quantitative error is 1.4%.

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来源期刊

Russian Journal of Nondestructive Testing 工程技术-材料科学：表征与测试

CiteScore

1.60

自引率

44.40%

发文量

审稿时长

6-12 weeks

期刊介绍： Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).