Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kawashima Koichiro and Aida Takumi,"1J2-4 Higher Harmonic Imaging of Crack Tip Plastic Zone(Measurement Techniques, Imaging, Nondestructive Evaluation 2)",Proceedings of Symposium on Ultrasonic Electronics,1348-8236,Institute for Ultrasonic Elecronics,2013-11-20,34,0,7-8,https://cir.nii.ac.jp/crid/1390845713023277824,https://doi.org/10.24492/use.34.0_7