| 摘要 |
Transducer based on eddy current technology and designed for measuring and testing of test objects (1) with respect to a quantity, for example a crack (8), of the test object. The transducer comprises a part-device (4) of electrically conducting material, for example steel, this part-device being provided with arrangements, such as grooves or slits, which render the formation of eddy currents in the part-device more difficult, thereby reducing the dampening influence of the part-device on the magnetic flux (14) extending between transducer and test object. Besides offering protection for the mechanically and thermally highly sensitive transducer coil (2), the part-device (4) may also have several other functions to fulfill. <IMAGE> |
