TY - JOUR
T1 - Transmission of larger amplitude ultrasound with SiC transistor pulser for subharmonic signal measurements at closed cracks
AU - Koda, Ren
AU - Mihara, Tsuyoshi
AU - Inoue, Katsuhiro
AU - Konishi, Goki
AU - Udagawa, Yoshio
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for the Innovative Nuclear Research and Development Program (Grant No. 120804) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Publisher Copyright:
© 2015 The Authors.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
KW - SiC transistor pulser;Cracks evaluation
KW - Subharmonic signal;Large amplitude ultrasound
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U2 - 10.1016/j.phpro.2015.08.008
DO - 10.1016/j.phpro.2015.08.008
M3 - Conference article
AN - SCOPUS:84948701991
VL - 70
SP - 528
EP - 531
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
T2 - ICU International Congress on Ultrasonics, ICU 2015
Y2 - 11 May 2015 through 14 May 2015
ER -