supported by the National Natural Science Foundation of China (Nos.51105209,61401211, 51175267);the China Postdoctoral Science Foundation (Nos.2012M511760, 2013T60540);the Specialized Research Fund for the Doctoral Program of Higher Education (No.20113219120005);the Jiangsu Province Science and Technology Support Program (No.BE2012034);the Ministry of Science & Technology of Zhengzhou (No. 131PPTGG425);the Zijin Intelligent Program of Nanjing University of Science and Technology (No. 2013ZJ0203)
Bolted connections are commonly used in aerospace structures.Once the bolts on the aircraft are damaged or loose,the consequence will be disastrous.Therefore,monitoring bolt loosening is especially required.However,pe...