公开(公告)号：US20190022792A1

公开(公告)日：2019-01-24

申请号：US16032364

申请日：2018-07-11

Applicant: JTEKT CORPORATION

Inventor： Naoki MATSUMOTO ,  Ryota UMEZAWA ,  Daisuke KURODA ,  Hiroshi OHARA

IPC: B23K26/03 ,  B23K26/211 ,  B23K26/06

Abstract: An optical non-destructive inspection method includes: a heating laser emission step; an information acquisition step of acquiring measurement point information and heating laser information; a joint state determination step of determining the joint state on the basis of the measurement point information and the heating laser information; and a preliminary heating step, which is performed before the heating laser emission step, of causing thermal distortion in a first member by irradiating a measurement point, or a preliminary heating range that includes the measurement point, or a preliminary heating point set in the preliminary heating range, with preliminary heating laser adjusted to a thermal distortion generation intensity, which is a constant output intensity, and an irradiation time such that the thermal distortion is caused without destroying the first member.