WIND TURBINE BOLT LOOSENING DETECTION DEVICE AND METHOD BASED ON PIEZORESISTIVE EFFECT

Li Wanrun; Guo Yibo; Liu Xuezhi; Du Yongfeng

doi:10.19912/j.0254-0096.tynxb.2024-1107

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 727-734. DOI: 10.19912/j.0254-0096.tynxb.2024-1107

WIND TURBINE BOLT LOOSENING DETECTION DEVICE AND METHOD BASED ON PIEZORESISTIVE EFFECT

Li Wanrun, Guo Yibo², Liu Xuezhi², Du Yongfeng

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Abstract

Based on the basic principle of piezoresistive effect, a self-sensing gasket and its signal transmission system were designed and fabricated. In addition, the single-bolt loosening identification test was used to verify the feasibility of self-sensing gasket detection bolt loosening identification, and the relationship between resistance, conductivity and bolt loosening torque was established. On this basis, a method for rapid detection of bolt group loosening by using self-sensing gasket parallel connection was proposed, and the feasibility of the rapid detection method was verified by bolt group loosening test. The results show that the self-sensing gasket has good loosening recognition effect and stability. Compared with the traditional detection method, the rapid detection method can effectively improve the detection efficiency of bolt group loosening.

Key words

wind turbines / structural health monitoring / fatigue damage / bolt loosening / piezoresistive effect

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Li Wanrun, Guo Yibo, Liu Xuezhi, Du Yongfeng. WIND TURBINE BOLT LOOSENING DETECTION DEVICE AND METHOD BASED ON PIEZORESISTIVE EFFECT[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 727-734 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1107

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