Advances in Technical Diagnostics Proceedings of the 6th International Congress on Technical Diagnostics, ICTD2016, 12 - 16 September 2016, Gliwice, Poland - Timofiejczuk, Anna; Łazarz, Bogusław Edward; Chaari, Fakher; Burdzik, Rafał (Springer International Publishing : Imprint: Springer, 2018)