SU1073698A1 - Material acoustic checking device - Google Patents

Abstract

DEVICE FOR ACOUSTIC MATERIAL CONTAINER, containing a synchronizer connected in series and a loading system, a serially connected broadband ultrasonic transducer and an amplifier connected in series a normalizer, a comparison circuit, an actuator, an electronic model of signals connected between the second outputs of the synchronizer and the second input of the comparison circuit, characterized by that, in order to increase reliability, it is equipped with a control unit for the duration of the loading pulses, connected to the second input of the loading system, three selection channels, each of which contains a variable delay circuit connected in series, a gating pulse shaper adjustable to an electronic key, variable delay circuit inputs connected to the first synchronizer output, second electronic key inputs connected to the amplifier output, outputs the first and second electronic keys are connected to the third and fourth inputs of the circuit, and the output of the third electronic key is connected Normalizers input.

Description

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The invention relates to the PCS; lkchesk:; and the disruptive control of the material content L r, vr;

It can be used for iCOMnjieiCCI.

acoustic-emission control, for L1 three sound spectroscopic sound and ultrasound echo-pulse method / w,

A device for determining the frequency and time characteristics of joibipfosi is known; new signals containing soybeans, for example, the generator and the pulses. wide axle spinner, time selector and spectrum anaizer, broadband ultrasonic transducer and oscilloscope 1,

However, the known device has low confidence con: fool; due to the absence of blocks, allowing .1Sch1x to excite in the material the acoustic signals of the margins,

The closest m. Technical; cyiiosoo ti to the invention is a device; 1l. acoustic control of materials, containing:; the synchronizer and system connected in series are loaded; Compound a successively wideband ultrasonic transducer and amplifier, provided by the next cxervry normalizer to compare and use, a piece mechanism, an electronic 5 & signals connected between the second synchronizer and the second input of the comparison 2.

This device is characterized by low reliability of control, overbias - the absence of blocks, allowing the analysis of signals of structural noise to ultrasonic pcho pulses.

The purpose of the invention is to increase the lotos;

The goal is achieved by the fact that the MaTepiisJioSi acoustic control system, which contains the connected sequencing device and the loading system, has a sequential CD with a flat band y; lv, TpgaBV OEOfi converter and a usnlitel; sss / la-ecnys i «o; In addition, a normalizer, a specialist and an executive to the executive. electron probe; The iViO signal of the signals, including the output of the synchronizer output and the second input; the comparison circuit is equipped with an abrasive unit with pulse duration loading, connected to the second input of the charging system, with three selection channels, each of which contain soy; regulatory impulse and electric 1 key, the inputs of the variable circuits are directly connected to the first output of the synchro switch. the second cables of the power switches are connected with yciaTiiienfi, output) and. the first and second eleg rockers are connected to -.fpe-ibeMy and the fourth entrance with:; eE, compare, and code of trs..you slyG | .,. and (- ;: o the key is connected to a normal jaiH game ;; se is the block diagram of the pryudl (asMoro device.

The device contains synchronizer 1 connected in series and system 2 is loaded. Connect sequentially a shirukop axial ultrasound transducer 3 n amplifier 4, connected in series normalizer 5, comparison circuit 6 and actuator 7, electronic signal model 8, including between the second synchrot output of the isolator 1 and the second input of the comparison circuit 6, duration control unit 9 load pulse Voguslyuchenny to the second input; / sistey 2 loading, three channels of specpeck, of which contains connected in series scheme Ш (11,12) stir delays, forgushirovatel 13 (14,15 strobruyu A variable pulse duration and an electronic key 16 (17,18), the inputs of the variable delay circuits 10, 11 and 12 are connected to the first output of the synchronizer 1, the second inputs of the electronic switches 16, 17 and 18 are connected to the output of the amplifier 4, the outputs of the first and the second electron 1Ш5Х keys 16 and 17 are connected to the third, y to the fourth / inputs of the comparison circuit 6, and the output of the third electronic key 18 pod ;;; uchei uso to the E-course of the normalizer S.

The acoustically controlled mate | ial device works as follows.

The synchronizer 1 generates the clock T-iivmyjFbCb, which starts the system 2 with the load of the smoked material 19 and the LS | .1 10, I and 12 variable delay. With such a time delay, the electronic model 8 sigalOE is triggered from synchronizer 1, imitating the signals of acoustic eg, expi1-:, ultrasonic vibrations and structural noise and reference sample of the material being monitored 19. The tracking time of the clock signal is equal to or longer than the time period of the acoustic oscillations delay controlled material 9. With the frequency of the TaicTOBbix sequence of iktulsov elektrdnnal eteky 11 transmitter of the system 2 loading nano; t on the controlled material 19 MS haNgcheskih blows, the duration of which is longer than control varies within the MKS 0.0110 As a result of this exposure to kokteoliruemo -. Material 19 is excited by vibrations that are accompanied by a structural pattern and is also stimulated by the growth of defects, which is accompanied by an emission of acoustic emission from 1 minute. Difficult maintenance signal, signaling infoption and information

Claims (1)

A DEVICE FOR ACOUSTIC CONTROL OF MATERIALS, comprising a synchronizer and a loading system connected in series, an ultrasonic transducer and amplifier connected in series, a normalizer connected in series, a comparison circuit and an actuator, an electronic signal model connected between the second output of the synchronizer and the second input of the comparison circuit, characterized in that, in order to increase reliability, it is equipped with a control unit for the duration of the loading pulses, under connected to the second input of the loading system, three selection channels, each of which contains a variable delay circuit, a variable-duration gating pulse shaper and an electronic key, the variable delay circuit inputs are connected to the first 'synchronizer output, the second electronic key inputs are connected to the amplifier output, the outputs of the first and second electronic keys are connected to the third and fourth inputs of the comparison circuit, and the output of the third electronic key is connected to the input in normalizer. g m oo O)> 1073697 J