Nonlinear acoustic method of detecting cracks and their location in the DESIGN AND DEVICE FOR IMPLEMENTATION

摘要

1.nonlinear acoustic way u043eu0431u043du0430u0440u0443u0436u0435u043du0438u00a0 cracks and their locations in the design, u0437u0430u043au043bu044eu0447u0430u044eu0449u0438u0439u0441u00a0 that periodically emits the u0438u0441u0441u043bu0435u0434u0443u0435u043cu0443u044e design u044cu0442u0440u0430u0437u0432u0443u043au043eu0432u0443u044e wave, at the same time, in the design institute u043du0438u0437u043au043eu0447u0430u0441u0442u043eu0442u043du0443u044e vibration with amplitude sufficient u0434u043bu00a0 u043eu0431u0435u0441u043fu0435u0447u0435u043du0438u00a0 u0432u0437u0430u0438u043cu043eu0434u0435u0439u0441u0442u0432u0438u00a0 on crack street u044cu0442u0440u0430u0437u0432u0443u043au043eu0432u043eu0439 waves and low-frequency vibration.then u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 reception ultrasonic wave amplitude and u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 u043cu043eu0434u0443u043bu00a0u0446u0438u0438 ultrasonic waves, and the availability and size of cracks u0441u0443u0434u00a0u0442 on u0430u043cu043fu043b u0438u0442u0443u0434u043eu0439 u043cu043eu0434u0443u043bu00a0u0446u0438u0438 some threshold u0437u043du0430u0447u0435u043du0438u00a0, the location of the same fracture u0441u0443u0434u00a0u0442 temporary delay u0440u0430u0441u043fu0440u043eu0441u0442u0440u0430u043du0435u043du0438u00a0 ultrasonic waves, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 orderthe ultrasonic wave continuously radiate the input under different angles (i, where i = 0, 1...k, u0438u0437u043cu0435u043du00a0u00a0 angle (from 0 to the maximum of the minimum required angle (k u0444u043eu0440u043cu0438u0440u0443u00a0 thereby the range of the u0434u0430u043bu044cu043du043eu0441u0442u0435u0439, with each are u0434u043bu00a0 u0435u043du0438u00a0 angle input (i u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 current distribution of values of the amplitude u043cu043eu0434u0443u043bu00a0u0446u0438u0438 ultrasonic waves from the range u0432u044bu043fu043eu043bu043du00a0u00a0 is at least u0434u043bu00a0 two values frequencies of low-frequency vibration.then from the distributions of u0434u043bu00a0 every corner entry (i choose and register u0434u043bu00a0 each range only the maximum amplitude u0437u043du0430u0447u0435u043du0438u00a0 u043cu043eu0434u0443u043bu00a0u0446u0438u0438 ul u0442u0440u0430u0437u0432u0443u043au043eu0432u043eu0439 waves, which u0441u0443u0434u00a0u0442 on the existence and size of cracks.;2. nonlinear acoustic way 1, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, u0434u043bu00a0 range set u0434u0430u043bu044cu043du043eu0441u0442u0435u0439 low-frequency vibrations and frequencies of all the u0437u0430u0440u0435u0433u0438u0441u0442u0440u0438u0440u043eu0432 u0430u043du043du044bu0445 amplitude values u043cu043eu0434u0443u043bu00a0u0446u0438u0438 u0434u043bu00a0 each set value of the amplitude u043cu043eu0434u0443u043bu00a0u0446u0438u0438 range corresponding to the maximum of all possible u0434u043bu00a0 the dr. u0430u043bu044cu043du043eu0441u0442u0438.;3. nonlinear acoustic way for 1 or 2, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, radiation and reception of ultrasonic waves u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 in node u043au043eu043bu0435u0431u0430u043du0438u00a0 u0432u043eu0437u0431u0443u0436u0434u0430u0435u043cu043eu0439 u043du0438u0437u043au043eu0447u0430u0441u0442u043eu0442u043du043e floor vibration.;4.the device u0434u043bu00a0 nonlinear acoustic u043eu0431u043du0430u0440u0443u0436u0435u043du0438u00a0 cracks and their locations in the structure contains at least one ultrasonic transducer, ul u0442u0440u0430u0437u0432u0443u043au043eu0432u043eu0439 u044du0445u043eu043bu043eu043au0430u0442u043eu0440 and block u0432u043eu0437u0431u0443u0436u0434u0435u043du0438u00a0 low-frequency fluctuations, which has the low frequency generator and a vibrator.the surface contact at the design through the u0441u043eu043fu0440u00a0u0433u0430u044eu0449u0435u0433u043e element, the output of ultrasonic u044du0445u043eu043bu043eu043au0430u0442u043eu0440u0430 is connected with a block of development of information u043eu0442u043bu0438u0447u0430u044eu0449u0435u0435u0441u00a0 because it sets the u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 and electronic node u0438u0437u043cu0435u043du0435u043du0438u00a0 angle input ultrasonic wavesconstructed in the form of acoustic prisms on the surface of the matrix of n ultrasonic transducers and united them with the block switching, with united with the u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 and ultrasonic u044du0445u043eu043bu043eu043au0430u0442u043eu0440u043eu043c, which is connected to a cluster of processing information, which is also the u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0,the block switching is executed with the possibility of simultaneous building block switching (m (m n) of ultrasonic transducers.;5. device for u043eu0442u043bu0438u0447u0430u044eu0449u0435u0435u0441u00a0 p.4, so that as the block u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 serves as a computer processing unit information.;6. device for u043eu0442u043bu0438u0447u0430u044eu0449u0435u0435u0441u00a0 paragraph 4 or 5, so that it has acoustic prism block rotation around the axis, coinciding with the u043du043eu0440u043cu0430u043bu044cu044e to surface structure in place to u043eu043du0442u0430u043au0442u0430 her acoustic prisms.;7. device for p.4, u043eu0442u043bu0438u0447u0430u044eu0449u0435u0435u0441u00a0, u0430u043au0443u0441u0442u0438u0447u0435u0441u043au0430u00a0 prism is symmetrical, and the matrix of ultrasonic transducers on the surface of the u0440u0430u0441u043fu043eu043bu0430u0433u0430u0435u0442u0441u00a0 's symmetry, u043eu0431u0435u0441u043fu0435u0447u0438u0432u0430u00a0 input ultrasonic waves through the acoustic lens not only from different angles and in different u043du0430u043fu0440u0430u0432u043bu0435u043du0438u00a0u0445.