| 摘要 |
PURPOSE:To inspect properly the peel state by giving a magnetic field to a conductive subject to be heated under a non-conductive material through a guide heating means and detecting the heat diffusion state at this time by an infrared ray camera. CONSTITUTION:The overall tester is placed on a self-traveling carriage, and an induction coil 5 is shifted in the state where it is separated from the surface of the non-conductive material by the prescribed distance. A guide heating device 4 supplies an AC exciting signal to the induction coil 5 with the aid of a signal from a control part 7, and forms an AC magnetic field in the inductive material to be heated 1. An excessive current flows in the subject to be heated 1, and its surface is heated to warm the non-conductive material 2. When it develops a peel part 2a, the heat diffusion state in this part is different from that of the non-peel part. The infrared ray camera 6 measures the temperature of the subject to be heated 1 and transmits the temperature to a signal processing part 9. A two-dimensional distribution picture is formed in the processing part 9, displayed on a CRT display 10 and recorded in a video recorder 11. |
