Author/Authors :
Nam، نويسنده , , K.W. and Kim، نويسنده , , J.W. and Hinoki، نويسنده , , T. and Kohyama، نويسنده , , A. and Murai، نويسنده , , J. and Murakami، نويسنده , , T.، نويسنده ,
Abstract :
Nondestructive evaluation (NDE) of ceramic matrix composites is essential to develop reliable ceramics for industrial applications. In this work, C-scan image analysis has been used to nondestructively characterize surface cracks in SiC/SiC composite ceramics. The possibility of detecting surface cracks was evaluated experimentally using ultrasonic equipment of μ-SDS with a probe of 170 MHz. The defocus method could detect the shape of surface cracks. As a whole, when the defocus method for the probe was used, we conclude that there is a good possibility of detecting surface cracks.
