EDDY CURRENT TRANSDUCER FOR FLAW DETECTORS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to the non-destructive control and can be used u0434u043bu00a0 inspection u044du043bu0435u043au0442u0440u043eu043fu0440u043eu0432u043eu0434u00a0u0449u0438u0445 objects. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 -- improving the sensitivity by u043fu043eu0432u044bu0448u0435u043du0438u00a0 of locality and u0432u044bu0440u0430u0432u043du0438u0432u0430u043du0438u00a0 directional pattern u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u0442u0435u043bu00a0. we got 2 u0432u043eu0437u0431u0443u0436u0434u0435u043du0438u00a0 creates a magnetic flux in a closed u043cu0430u0433u043du0438u0442u043eu043fu0440u043eu0432u043eu0434u0435 1.central mine 4 u0442u043eu043au043eu043fu0440u043eu0432u043eu0434u0430 a current, and attendants, crosspieces 6, u00a0u0432u043bu00a0u044eu0449u0435u0439u0441u00a0 element hot eddy current. currents passing by attendants, wire 6, in the ideal case is not u0438u043du0434u0443u0446u0438u0440u043eu0432u0430u043du0438u00a0 emu in u0432u0438u0442u043au0430u0445 inductance coil 7. the asymmetry u0440u0430u0437u043cu0435u0449u0435u043du0438u00a0 turns coil 7 and the conductor wire 6 u043fu043eu043bu0443u0447u0430u0435u0442u0441u00a0 u0440u0430u0437u0431u0430u043bu0430u043du0441.the level of the balancing u043fu043eu0432u044bu0448u0430u0435u0442u0441u00a0 by u0432u0440u0430u0449u0435u043du0438u00a0 coils 7 around the central vein. in this u0432u0438u0442u043au0438 winding are some of the eccentricity generated in u043du0430u043cu043eu0442u043au0435 its conductors. during the rotation of the measuring coil 7 is the flux linkage and u0438u0437u043cu0435u043du00a0u0435u0442u0441u00a0 in small range, and u0442u0440u0435u0431u0443u0435u0442u0441u00a0 u0434u043bu00a0 balancing.the u043fu0440u0438u0432u043eu0434u0438u0442u0441u00a0 in electromagnetic interaction with the controlled object. the presence of defects leads to violations of symmetry by the currents and the output signal u043fu043eu00a0u0432u043bu0435u043du0438u044e u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u0442u0435u043bu00a0. 2). in i