Stefan Simon lectures on ultrasonic testing of stone at Tongji University

By invitation from Prof. Dr. rer.nat Dai Shibing, Director of Architecture Conservation Laboratory at CAUP Tongji University , Stefan Simon gave a lecture on Ultrasonic Testing in Stone Conservation on October 12th, 2014 in the frame of  the Symposium on Conservation Science 2014 -with focus on Architectural Heritage Conservation and Restoration, Shanghai