Development of Fuel Debris Inspection Methods using Air-Coupled Ultrasound Ari Hamdani, Hiroshige Kikura, Shun Kimura, Keisuke Tsukada, Daisuku Sasa and Shuichi Oomori E3S Web Conf., 42 (2018) 01015 Published online: 29 June 2018 DOI: 10.1051/e3sconf/20184201015