US 11,656,202 B2
Sonic inspection device, sonic inspection method, and contact member
Akiko Hirao, Kawasaki Kanagawa (JP); Noriko Yamamoto, Yokohama Kanagawa (JP); and Tomio Ono, Yokohama Kanagawa (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed on Aug. 31, 2021, as Appl. No. 17/462,581.
Claims priority of application No. JP2021-041454 (JP), filed on Mar. 15, 2021.
Prior Publication US 2022/0291174 A1, Sep. 15, 2022
Int. Cl. G01N 29/04 (2006.01); G01N 29/265 (2006.01)
CPC G01N 29/041 (2013.01) [G01N 29/265 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A sonic inspection device comprising:
a sonic probe which includes a vibrator configured to perform at least one of transmitting a sound wave or receiving a sound wave and which has a sonic function surface configuring at least one of a wave transmitting surface of the sound wave or a wave receiving surface of the sound wave;
a contact member including a couplant and a sheet member, the couplant having a first surface which is in contact with the sonic function surface of the sonic probe directly or through an intermediate member and a second surface opposite the first surface, and the sheet member being in contact with the second surface of the couplant and having a plurality of holes; and
a loading mechanism configured to apply a load and to remove the load to/from the contact member,
wherein the sheet member has a thickness in a range of not less than 0.15 times nor more than 0.35 times a wavelength λ of the sound wave propagated in the couplant, and
the couplant contains at least an elastomer, and the sheet member contains a hard material larger in modulus of elasticity than the elastomer, and the hard material includes at least one selected from the group consisting of a hard resin material, a metal material, a ceramic material, and a compound material.