| 主权项 |
1. An optical non-destructive inspection method, in which
a pressure contact state is determined at pressure contact portions of two workpieces coupled together by pressure contact without being soldered, and the pressure contact portion of a first workpiece and the pressure contact portion of a second workpiece being formed of conductive members, the optical non-destructive inspection method comprising: heating a measurement spot using a heating laser light source that sets the measurement spot on a surface of the first workpiece near the pressure contact portion, the surface being a surface of the conductive member including the pressure contact portion, the heating laser light source emitting heating laser light with a predetermined laser wavelength, at least one heat ray detector that enables a heat ray to be detected, and a controller that controls the heating laser light source and that retrieves a detection signal from the heat ray detector, the heating including controlling the heating laser light source via the controller to irradiate the measurement spot with the heating laser light adjusted to have an amount of heat at which the workpieces are heated without being destroyed; acquiring a temperature rise property that is a temperature rise state of the measurement spot according to a heating time by, while performing the heating through the heating step, detecting, via the controller, a heat ray radiated from the measurement spot using the heat ray detector to determine a temperature at the measurement spot; and determining, via the controller, whether or not the pressure contact state at the pressure contact portions of the two workpieces, which includes a contact area and a contact pressure of each pressure contact portion is appropriate based on the temperature rise property of the measurement spot that is a heating point affected by an amount of heat transferred. |
