| 摘要 |
PURPOSE:To improve reliability and efficiency of an inspection by detecting an acoustic emission (AE) generated by applying an internal pressure, an axial tension or a torque to a weld zone, by an AE detector. CONSTITUTION:A jig 11 is inserted into a pipe 4 so that an internal pressure is applied to a part to be inspected. Also, AE detectors 12, 12' are provided on the jig 11 so as to be pressed against the inside surface of the pipe 4 by a spring, and placed so as to be positioned at both sides of a weld zone 5, in its set state. An internal pressure P of the pipe 4 in the vicinity of the weld zone 5 is inputted to an AE measuring device 20, and also the AE detectors 12, 12' are connected to the AE measuring device 20 so that an AE generation number N by applying the internal pressure is inutted. According to said constitution, this method is applied to a detection of a fault in the weld zone and its reliability and efficiency can be improved. |
