| 摘要 |
PURPOSE:To achieve that an operation which detects an exfoliation part by tapping a tile wall surface is performed with high accuracy by means of a so-called inspection robot. CONSTITUTION:The crest factor of vibration waveforms of a hitting noise, from a tile wall surface 3, which is obtained by using an electroacoustic transducer 4 is computed by means of a peak hold circuit 6, an effective-value judgment circuit 7 and a division circuit 8. Whether the bonding state of a finishing material in a hit part is good or not is judged by using a judgment circuit 9 while the crest factor which has been found as an index. |
