Funding for this research was provided by:
the Natural Science Foundation of Shanghai (Grant no. 18ZR1425800)
the Open Project of Anhui Province Key Laboratory of Nondestructive Evaluation (Grant no. CGHBMWSJC03)
the National Natural Science Foundation of China (Grant no. 61875125)
Article History
Received: 15 March 2019
Accepted: 16 August 2019
First Online: 24 August 2019