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# R-CAST AE sensor system

The R-CAST AE Sensor System is designed to detect microscopic destructions. This is a result of the joint development activities of Fuji Ceramics and Research Center for Advanced Science and Technology of The University of Tokyo. The use of an FET head amplifier and a special preamplifier allows this sensor system to achieve a sensitivity 55 dB higher than a conventional AE sensor.
In most case,the ceramics,representative new material,is a kind of brittleness material.A conventional AE sensor,used new material,was hard to delect AE,since the objects were mainly for metal materials. The R-CAST AE Sensor System can detect microscopic cracks of several $\mu$m.