	US 11,982,641 B2
	Method and device for examining clinched portion of tubular body
Takahide Hatahori, Kyoto (JP); Kenji Takubo, Kyoto (JP); Koki Yoshida, Kyoto (JP); and Yoshihaya Imamura, Fujisawa (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP); and Kobe Steel, Ltd., Kobe (JP)
Appl. No. 17/614,527
Filed by Shimadzu Corporation, Kyoto (JP); and Kobe Steel, Ltd., Kobe (JP)
PCT Filed Apr. 13, 2020, PCT No. PCT/JP2020/016301 § 371(c)(1), (2) Date Nov. 28, 2021, PCT Pub. No. WO2020/241092, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-101741 (JP), filed on May 30, 2019.
Prior Publication US 2022/0229020 A1, Jul. 21, 2022
Int. Cl. G01N 29/04 (2006.01); G01N 29/24 (2006.01)

CPC G01N 29/041 (2013.01) [G01N 29/2418 (2013.01); G01N 2291/2634 (2013.01)]

8 Claims

1. A method for examining a clinched portion of a tubular body, comprising steps of: giving an elastic vibration to a clinched body formed by clinching a tubular body with a clinch-target member while the clinched body is in contact with a vibration source; and acquiring, for each of a plurality of view areas which differ from each other in a position in a circumferential direction of the tubular body, a vibration distribution optically and simultaneously measured within the view area including a clinched portion of the tubular body and the clinch-target member, to determine whether or not a state of clinching is satisfactory over the entire clinched portion.