| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tube wall thickness measuring apparatus capable of accurately and simply measuring a wall thickness even of a damaged part such as a flaw and a dent is formed on the surface of an inspection object. <P>SOLUTION: This tube wall thickness measuring apparatus for measuring a wall thickness of a tube 50 by an ultrasonic flaw detection includes: a locally submerged type ultrasonic probe 10; a cylindrical body 21 which forms in the inside, a medium space to be filled with contact medium; an opening 22 provided at one end side of the cylindrical body and formed at a curvature corresponding to the outer surface of the tube; a tool main body 2 provided at the other end side of the cylindrical body and having a retaining part for retaining the ultrasonic probe 10 and a cover part 23 for sealing the medium space; a seal member 3 interposed between the end edge of the opening 22 and the outer surface of the tube 50; medium injection means 4 injecting the contact medium in the medium space; and fixing means for pressing and fixing the tool main body 2 towards the outer surface of the tube 50. This tube wall thickness measuring apparatus is configured to measure the wall thickness of the tube by the ultrasonic probe 10, with the tool main body 2 fixed to the outer surface of the tube 50 via the seal member 3 by the fixing means. <P>COPYRIGHT: (C)2012,JPO&INPIT |
