Abstract
The moment tensor analysis of acoustic emission (AE) provides quantitative information on kinematics of cracks. Simple AE moment tensor analysis has been developed and named SiGMA-AE analysis. In-plane unconfined compression tests of mortar and concrete plates with a slit are carried out. The inclination of slits are varied as 0, 30 and 45° to the loading axis. The sources are located from detected AE signals. Then, orientations of cracks, crack types and crack volumes are determined by the SiGMA-AE analysis. Furthermore, it is clarified that the damage parameters can be estimated from the moment tensor components. The results show close correlation between the calculated crack volumes and the damage parameters.
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