AEセンサを用いたメカニカルアンカの非破壊検査技術の開発 2
Development of non-destructive inspection technique for mechanical anchor bolts using AE sensor 2
著者:
匂坂 充行 Mitsuyuki SAGISAKA 松永 嵩 Takashi MATSUNAGA 小川 良太 Ryota OGAWA 鵜飼 康史 Yasufumi UKAI 礒部 仁博 Yoshihiro ISOBE
発刊日:
公開日:
AE sensormechanical anchor boltnon-destructive inspectionPost-installed anchor bolt
概要
A new non-destructive inspection technique with using acoustic emission (AE) sensor for mechanical anchor bolt was developed for the purpose of overcoming problems originating in existing hammering test. The new technique enables us to obtain inspection results with little dependence on personal skills of a checker, and to judge the integrity of the bolts based on quantitative measurement results. The detectability to crack width on concrete was reported. From experimental results by using this technique, the peak frequency obtained from the bolt installed in the cracked concrete block decreases compared with one in no-crack concrete block. In addition, peak frequency changes obtained from concrete blocks with crack has a clear tendency to increase with increasing crack width. These results indicate the possibility that degradations such as cracking in concrete could be detected by the new technique.
