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Two phased array ultrasonic testing methods for bolt holes of wind turbines in service
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Lun ZHAO1, Hui CAI1, Zhiqiang WANG1, Jiaojiao HAO2, Bo WANG2, Peng WANG1, Chengpeng QIN1, Bohan WANG1
Thermal Power Generation | 2023, 52(3) : 67 - 72
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Thermal Power Generation | 2023, 52(3): 67-72
• Fault diagnosis and condition monitoring technologies of wind power system •
Two phased array ultrasonic testing methods for bolt holes of wind turbines in service
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Lun ZHAO1, Hui CAI1, Zhiqiang WANG1, Jiaojiao HAO2, Bo WANG2, Peng WANG1, Chengpeng QIN1, Bohan WANG1
Affiliations
  • 1.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710054, China
  • 2.Huaneng New Energy Co., Ltd. Shaanxi Branch, Xi'an 710054, China
Published: 2023-03-25 doi: 10.19666/j.rlfd.202207121
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Large number of bolted structures exist in wind turbine equipment, once the bolt hole is defective, it may lead to fracture of the entire matrix and cause major accident, but the current bolt hole defect detection method has the situation of missed detection and misjudgment. Aiming at solving this problem, through investigation, theoretical analysis and physical research, two methods which combine special tooling with probe for bolt hole defect detection are developed, namely the direct beam method and the sector scanning deflection method. Taking the bolt hole of pitch bearing in wind turbine as the research object, the CIVA software is used to simulate the two detection methods, and the rectangular simulated crack can be detected. Experiments were carried out on the defects of rectangular grooves in the actual pitch bearing bolt holes, which showed that the direct beam method could realize the defect detection of bolt hole cracks. The research provides a new method for monitoring the service status of bolt holes, which is beneficial to ensure the safe service of bolted structures.

bolt hole  /  crack  /  phased array ultrasound  /  wind turbine  /  CIVA
Lun ZHAO, Hui CAI, Zhiqiang WANG, Jiaojiao HAO, Bo WANG, Peng WANG, Chengpeng QIN, Bohan WANG. Two phased array ultrasonic testing methods for bolt holes of wind turbines in service[J]. Thermal Power Generation, 2023 , 52 (3) : 67 -72 . DOI: 10.19666/j.rlfd.202207121
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  • Youth Science Foundation Project of National Natural Science Foundation of China(52101001)
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Year 2023 volume 52 Issue 3
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63
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Article Info
doi: 10.19666/j.rlfd.202207121
  • Receive Date：2022-07-08
  • Online Date：2026-01-23
  • Published：2023-03-25
Article Data
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  • Received：2022-07-08
Funding
Youth Science Foundation Project of National Natural Science Foundation of China(52101001)
Affiliations
    1.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710054, China
    2.Huaneng New Energy Co., Ltd. Shaanxi Branch, Xi'an 710054, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202207121
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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