Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OOHIGASHI Takashi and WATAKA Yuuki and KUBO Shiro,OS0312 Identification of Vertical Cracks by the Supersonic Pulse Echo Method Using Smart Layer,The Proceedings of the Materials and Mechanics Conference,2424-2845,The Japan Society of Mechanical Engineers,2011,2011,0,_OS0312-1_,https://cir.nii.ac.jp/crid/1390282680848034688,https://doi.org/10.1299/jsmemm.2011._os0312-1_