Crack Detection on Dovetail Gear of Certain Type Airplane Engine Turbine Disk
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摘要: 由于采用电位法检测飞机发动机涡轮盘榫齿裂纹时常存在漏检, 造成涡轮盘脱出事故。分析了采用涡流方法进行检测的可行性, 比较了涡流法和电位法检测的灵敏度。最后通过试验证实: 涡流法检测涡轮盘榫齿裂纹具有灵敏度高、可检出腐蚀缺陷、表面预清理简单并且扫查速度快的优点, 是一种值得推广的检测方法。Abstract: Due to the fact that using the potential testing method for aircraft engine turbine disk mortise teeth cracks of ten resulted in the defect being undetected and possibly causing, the accident of turbine disk prolapsed, the possibility of using eddy current testing detecting the crack in aircraft engine turbine disk mortise teeth was outlined. The sensibility was compared between eddy current testing and potential testing methods. Finally the experiments confirmed that eddy current testing method had advantages of high sensitivity, corrosion defects detecting ability, the ease of surface pre-clean-up and quick scanning speed, so it was a detection method worthwile promoting.
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Keywords:
- Aircraft engines /
- Turbine disk /
- Mortise teeth /
- Potential testing /
- Eddy current testing /
- Sensitivity compared
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[1] 吴步宇, 陈志祥.钢材硬度涡流无损检测技术的研究[J].无损检测, 2000, 22(6): 243. [2] 帅家盛.涡流检测技术的最新发展[M].北京: 香港嘉盛科技, 2003. [3] 贾伯年.传感器技术[M].南京: 东南大学出版社, 1992. [4] 云庆华.无损探伤[M].北京: 劳动出版社, 1983.
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