On this study, constructed the reflective acoustic detecting system using 15MHz acoustic transducer. The most difficult problem in metal substance is to discriminate the corrosion state using none destructive method. As the test samples, the six 100 w...
On this study, constructed the reflective acoustic detecting system using 15MHz acoustic transducer. The most difficult problem in metal substance is to discriminate the corrosion state using none destructive method. As the test samples, the six 100 won coins which are issued on the different years are used. The experimental results showed the distinct difference among the coin's acoustic signals accorded to its issued years. I catches the common regulation in acquisited acoustic signals and convinced this technique to be very useful in corrosion discrimination of the metal substances on none destructive testing.