Evaluation of PC Cable Rupturing with Secondary Acoustic Emission Activity
Cable corrosion of post-tensioned PC structures leads to cable rupturing, followed by eventual failure in some cases. It is well know that the around of the ruptured area is re-anchored when the cable was broken, and corresponding elastic energy is released accompanied with elastic waves namely acoustic emission (AE). Specifically, AE activities are taken place due to the cables breakage and subsequent reanchoring process. As these are mainly generated as shear type of deformation, the secondary AE activity especially from the re-anchored point was readily expected to emerge with applying further loads to the structure. Detecting the AE activities can thus identify the cable rupture and re-anchoring area. In this study, cable rupturing was experimentally reproduced and cyclic load was followed to be applied using a full scale PC beam. These AE activities had intrinsic frequency features, so that the secondary AE activities can be readily recognized by the frequency features.
Motoyoshi Goto Tomoki Shiotani Yoshinobu Oshima Shohei Momoki
Kyoto University, Nishikyo Kyoto, Japan Graduate School of Management and Graduate School of Engineering, Kyoto University,Nishikyo Kyoto, J Graduate School of Engineering, Kyoto University, Nishikyo Kyoto, Japan Research Institute of Technology, Tobishima Corporation, Chiba, Japan
国际会议
World Conference on Acoustic Emission(2011年声发射国际会议)
北京
英文
428-433
2011-08-24（万方平台首次上网日期，不代表论文的发表时间）