00686oam 2200217z- 450 9962800419033161-4799-8182-6(CKB)3780000000083572(EXLCZ)99378000000008357220220628c2015uuuu -u- -engUltrasonics Symposium (IUS), 2015 IEEE InternationalIEEE1-4799-8183-4 2015 IEEE International Ultrasonics Symposium 2015 IEEE International Ultrasonics Symposium (IUS)Ultrasonics Symposium PROCEEDING996280041903316Ultrasonics Symposium (IUS), 2015 IEEE International2496507UNISA