| 摘要 |
A method for ultrasonic testing of an object, wherein at least one test moment an ultrasonic test signal (S 1 , S 2 ) is transmitted into the object ( 2 ), while after a particular verification period (Deltat<SUB>1</SUB>, Deltat<SUB>2</SUB>) measured from said test moment, an ultrasonic verification signal (S 1 ', S 2 ') is transmitted into the object ( 2 ), a possible echo of said test signal (S 1 , S 2 ) being received from said object ( 2 ) at a particular first measuring moment, the possible echo being accepted as being the echo (E 1 , E 2 ) of said test signal (S 1 , S 2 ) only when the echo (E 1 ', E 2 ') of the verification signal is received at a particular second measuring moment. In addition, the invention provides an apparatus, evidently intended and designed for carrying out such a method and a use of such an apparatus.
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