Application of 3 D AE Tomography for Triaxial Tests of Rocky Specimens

Preventive maintenance is of high demand for managing existent infrastructures with the reasonable procedure including life cycle cost [1]. NDT approaches to diagnose the early internal damage of structures have thus been studied extensively. In order to respond to these issues, the authors had proposed ‘AE tomography’ which executes both of AE monitoring and elastic wave tomography and succeeded to apply the diagnosis of planar structures [2]. The AE tomography enables to provide accurate AE source locations as well as the velocity distribution with the tomography simultaneously. In this paper, newly developed 3D AE tomography will be briefly introduced followed by the application of triaxial rock shear test. Through the application the applicability of 3D AE tomography [3] for diagnosis of actual deterioration/ damages of infrastructures will be discussed.