Transmission of larger amplitude ultrasound with SiC transistor pulser for subharmonic signal measurements at closed cracks

Ren Koda, Tsuyoshi Mihara, Katsuhiro Inoue, Goki Konishi, Yoshio Udagawa

研究成果: Conference article査読

抄録

With measurements using the Subharmonic Phased Array for Crack Evaluation system, transmission of large-amplitude ultrasound is required to generate subharmonics near closed cracks. We designed a new pulser using a SiC transistor making larger currents available with low output impedance to generate large-amplitude signals. We report on the efficacies of the pulser in comparison with a conventional pulser. We investigated combinations of excitations from several transducers and the two pulsers by measuring signal amplitude, effective voltage, and electric current for each transducer. By applying larger electric currents, larger excitation amplitudes were produced, even when the capacitance oftransducer was larger.

本文言語English
ページ(範囲)528-531
ページ数4
ジャーナルPhysics Procedia
70
DOI
出版ステータスPublished - 2015
イベントICU International Congress on Ultrasonics, ICU 2015 - Metz, France
継続期間: 2015 5 112015 5 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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