ULTRASONIC INSPECTION METHOD OF STRUCTURE IN A PIPE

摘要

PURPOSE: An ultrasonic inspection method for a structure in a pipe is provided to accurately and easily confirm the position and eccentric degree of a structure located at the inside a pipe filled with fluid. CONSTITUTION: An ultrasonic inspection method for a structure in a pipe is as follows. A contact-type vertical probe is located at the outer surface of a pipe filled with fluid. Ultrasonic waves are supplied to the inside the pipe(S10). If a structure is existed inside the pipe, the vertical probe receives a signal reflected from the surface of the structure(S20). The reflected signal is transmitted to an ultrasonic detector, and the ultrasonic detector displays the signal(S30). It is confirmed whether the structure is existed inside the pipe and the position of the structure by analyzing the displayed signal(S40).