ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2007
形態種別	論文
査読	査読あり
標題	New design of electromagnetic acoustic transducer for precise determination of defect
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Proceedings - IEEE Ultrasonics Symposium
巻・号・頁	pp.1609-1612
著者・共著者	Y. Ohtsuka,T. Yoshimura,Y. Ueda
概要	New design of a EMAT with magnetic coils, named as current driven EMATs, was proposed to improve its performance for nondestructive inspection. The magnetic coils were connected to a pulse forming network circuit which can flow the large rectangular current to generate strong magnetic field in a short time. The detection profiles of shear horizontal waves were compared for this current driven EMAT and the conventional periodic permanents structure EMAT. The both profiles were almost the same which indicated that the current driven EMAT has suitable configuration for generating the shear horizontal waves. The amplitudes of the detected waves were increased with mangetomotive force. When the two sheets of the magnetic coils were stacked, the amplitudes of the waves were increased to 2.3 times larger than that of the conventional EMAT.
DOI	10.1109/ULTSYM.2007.405
ISSN	1051-0117