Fig 2 and Fig 3 - Ultrasonic testing of green ceramic materials

fig. 2: A-scan of a blind hole with a diameter of 2 mm in a depth of 28 mm in a 33 mm SiC green ceramic pulse echo testing method signal amplification 81dB, broad band transducer 1 MHz fig. 3: A-scan of a 33 mm SiC green ceramic without model defects pulse echo testing method signal amplification 81dB, broad band transducer 1 MHz Amplitude response of a 5 mm SiC bending bulk produced with two air coupled capacitance transducers in ultrasonic through-transmission testing