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.
GUO Y F, ZHANG Z S, YANG W Z, et al.Early bolt looseness state identification via generalized variational mode decomposition and similarity index[J]. Journal of mechanical science and technology, 2021, 35(3): 861-873.