China Mechanical Engineering ›› 2023, Vol. 34 ›› Issue (08): 883-891.DOI: 10.3969/j.issn.1004-132X.2023.08.001

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Rotating Eddy Current Testing for Inspection of Cracks at Hole Edge

ZHU Yulong1,2,3;ZHAO Yingsong1,2,3;FANG Yang1,2,3;CHEN Hongen1,2,3;CHEN Zhenmao1,2,3   

  1. 1.State Key Lab for Strength and Vibration of Mechanical Structures,Xian,710049
    2.Shaanxi ERC on NDT and Structural Integrity Evaluation,Xian,710049
    3.School of Aerospace Engineering,Xian Jiaotong University,Xian,710049
  • Online:2023-04-25 Published:2023-05-16

孔边裂纹的旋转涡流检测

朱玉龙1,2,3;赵迎松1,2,3;方阳1,2,3;陈洪恩1,2,3;陈振茂1,2,3   

  1. 1.机械结构强度与振动国家重点实验室,西安,710049
    2.陕西省无损检测与结构完整性分析工程技术中心,西安,710049
    3.西安交通大学航天航空学院,西安,710049
  • 通讯作者: 陈振茂(通信作者),男,1964年生,教授、博士研究生导师。研究方向为电磁无损检测理论、技术及在核电、特种设备、航天航空等关键结构中的应用。发表论文300余篇。E-mail:chenzm@mail.xjtu.edu.cn。
  • 作者简介:朱玉龙,男,1996年生,硕士研究生。研究方向为电磁无损检测。E-mail:zhuyulong@stu.xjtu.edu.cn。
  • 基金资助:
    国家自然科学基金(11927801);国家科技重大专项(2019-Ⅶ-0019-0161)

Abstract:  Rotating eddy current testing method was applied for reliable ECT of cracks at the cooling hole edge of gas turbine blades. At first, a numerical simulation scheme and code were developed, and numerical results show that the method might find cracks by amplitude modulated rotating ECT. A rotation ECT probe and a inspecting system were designed to inspect test-pieces with cooling holes and cracks at their edges. The consistency of experimental ones and simulation results show that the proposed numerical simulation scheme and rotating ECT are effective for detecting the hole edge cracks. 

Key words: eddy current testing(ECT), rotating eddy current, crack at hole edge, numerical simulation method, experimental validation

摘要: 将调幅旋转涡流检测技术用于叶片气膜孔边任意方向裂纹的无损检测。首先,开发了调幅旋转涡流检测信号数值模拟方法和程序,计算结果表明调幅旋转涡流方法可有效检测孔边裂纹。其次,开发了旋转涡流检测探头和检测实验系统,对含孔边裂纹的气膜孔模拟试件进行了检测实验。检测实验与理论分析的结果一致,验证了所提数值模拟方法和调幅旋转涡流检测技术对孔边裂纹检测的有效性。

关键词: 涡流检测, 旋转涡流, 孔边裂纹, 数值模拟方法, 实验验证

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