RU1387658C - Device for determining co-ordinates of defects - Google Patents

Abstract

The invention relates to the field of non-destructive testing and can be used for ultrasonic testing of products with limited surface curvature. The aim of the invention is to increase the productivity of monitoring due to the possibility of automating the process of determining and recording the coordinates of defects. The combined transducer 1 of the flaw detector 2 determines the location of the defect by the maximum amplitude, and a system of two emitting 4 and 6 and three receiving 7-9 transducers determines the coordinates of the transducer I on the surface being monitored. The calculator 20 with digital printing 21 recounts the coordinates of the defect relative to the selected coordinate system. The OR 16 circuit resets the values of the meters 15 time intervals for each measurement cycle, when the coordinates of the receiving transducers 7-9 and block 3 are changed, or if the coordinates of the transducers 1,7, 8, and 9 are refined when calibrating the device before starting work in a new zone. 3 il .. with 9 (L with

Description

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Vi3o6peteHHe ioinsntsl to perazru - gaayugoyim isga-1tain m and can be used for ultrasonic testing of products with limited kryptenoy surface.

The chain of the invention is to increase the control performance due to the possibility of automating the process of determining and recording the coordinates of defects in.

Fig. 1 is a structural diagram of a device for determining the coordinates of defects; in FIG. 2 - arrangement of emitters and receivers of ultrasonic vibrations 5 in FIG. 3 juvenile diagrams explaining the operation of the device.

The device for determining the coordinates of defects includes a transducer 5 j of an ultrasonic flaw detector 2 connected to a transducer 1, and a unit 3 for determining the location of the transducer i from the first emitter 4 and the first one connected to it. 5, the second driver 6, three receiving transducers 7–9, but in addition to them, three receiving and measuring ones. Tel. x 10-12, each of which remains from the serially connected amplifier 13 with AGCJ of the threshold element 14 and the meter 15 times, the intervals, element 16 OR, the second generator 17, connected to the second emitter by the output

The device also contains a pulse distributor S8 15, a defect setter 19 and a computer 20 with a digital print 21 and a data input unit 22. . Start inputs of measurement ez1 15 time intervals are combined and connected to the output of the element; 16 OR. The first and second outputs of the pulse distributor 18 are connected to the start inputs of the first 5 and BTopoj D 17 generator and the outputs of the element 1-6 OR, the outputs of the receiving and measuring channels 10-12, defect master 19 and ultrasonic flaw detector 2 and the input of the pulse distributor 18 through the line 23 connected to the calculator 20, From the beam, bodies 4 and 6 are installed equidistant to the converter 1,

The device for determining the coordinates of defects operates as follows gg. From the data input unit 22, the source data of the monitoring mode are entered into the RAM of the calculator 20

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F),, - - tore at the second base of the receiving distance MY7KDU with centers, respectively, of the first 8 and third 9, the first B and second 7 receiving converters (see Fig. 2);

S ,, S: 2, - tangential and normal, made up the slender second base S of the reception with respect to the first base S, of the reception O of the radiation base - the distance between the centers of the first 4 and second 6 emitters;

C (and C are the velocities of acoustic waves excited by transducer 1 and emitters 4 and 6;

5.4y statistical errors in the time measuring path of the flaw detector 2 and the device; the propagation time of the acoustic wave from the emitter 4, respectively, to the first 8, second 7 and third 9 receiving transducers;

 the propagation time of the acoustic wave from the second transmitter 6 to the first 8, second 7, and third 9 receiving transducers, respectively;

6i is the input angle of the acoustic volle transducer.

Next, in the data input unit 22, the coordinates of the centers of the receiving transducers 8 and 7 are entered, respectively, Xd, Ud, Xc, Uc. After that, the device is switched to the Search mode by dialing a command in the search data input unit 22 to enable search. According to the next clock pulse (t, Fig. 3, 1), the flaw detector driver 2 (not shown) is turned on and the device goes into Waiting for a defect sign to arrive, Moving block 3 on the surface of the monitored product (not shown) echoes the defect flaw detector screen. 2, When a defect is detected and tuned to a maximum of 5 of the amplitude of its echo signal, a defect switch 19 is turned on. From the next clock pulse, the defectoscope driver 2 is switched off (Fig. 3, diagram Г, time moment t /,). The contents of the apEHSHin-ix meter of the flaw detector 2 intervals (not shown) are entered into the on-line calculator 20 (Fig. 3, eshora, 3 , interval), In the following step, the device includes the trMnynbCOB distributor 18

(Fig. 3, puree ", moment tj). At its first output, the triggering pulses (Fig. 3, diagram 5), coming from the input of the generator 5, and also through the 16-pulse element to the triggering inputs, measure 15 time intervals of three receiving and measuring channels 10-12 (Fig. 3) , diagram 7), The first generator 5 generates electrical IT 1 pulses from the synchronization pulse (Fig. 3, diagram 8), which excite the mechanical vibrations of the emitter plate A. The mechanical oscillations of the emitter A propagate in the controlled product and reach three receiving converters 7 -9, which prev The energy of elastic vibrations of the material is called electric. The electrical signal of the receiving converters is amplified to the required value by the amplifier 13 with AGC, and then it is supplied to the threshold element 1A, which generates a stop pulse for the meter 13. To increase accuracy and reliability, the time interval is measured several times a little, and the measurement result is averaged is. After generating the last trigger gang at the first output of the 1 1 pulse distributor 18 in the next working cycle, the device switches off the 18 pulse distributor and sends the contents of the I5 time meters

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receiver channels 10-12, and img.go 1 “d, and t tc. The memory of the calculator 20 is absent (Fig. 3, plot 0, interval tg-t,). From the next step, processing of the measurement results and the calculated values of the coordinates of defects Xd, Ud begin to be printed. The calculator 20 checks the status of the remote control (not shown) of the data input unit 22 for the presence of the Change coordinate command. If the Change coordinate command is entered on the remote control of the data inlet block 22, the device switches to the Search mode in the Data input mode. The new coordinates of the acceptance centers of converters 8 and 7 are entered into the RAM 20 of the calculator, and

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coordinates Xft, Ud and Xd, on the control panel of the data input unit 22, the Search on command is typed. The device goes into Search mode. If there is no change of coordinates, the device checks for the Search enable command. If this command is absent, the presence of the End command is checked. If this command is typed on the control panel of unit 22, the device stops. Coordinates are changed as if three receiving transducers 7–9 and block 3 are moved to a new inspection zone of the controlled

the intervals of three receiver-measuring35th products, and in the case of refinement of channels 10-12, namely t. into RAM of the calculator 20 (Fig. 3, epm 10, interval t, 17). After sending the contents of the 15 time interval meters to the RAM of the calculator, the pulse distributor 18 is switched on again (Fig. 3, diagram A, moment t), KOTopbrii now generates a series of triggering pulses on its second output (Fig. 3, diagram 6). The second generator 17 generates electrical pulses (Fig. 3, zshora 9), exciting the mechanical number of the emitter 6. Measurement

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the coordinates of the transducers 7 and 8 when calibrating the device before starting work in a new zone.

The proposed device makes it possible to determine the angular position of the projection of the acoustic axis of the transducer and the scanning surface in the selected coordinate system, which leads to an increase in the productivity of ultrasonic testing of maltreatments with a large surface area.

Purchase Forms

A device for determining the coordinate of defects, comprising a transducer, an ultrasonic flaw detector connected to a transducer, and a unit for determining the location of the transducer from the first radiator and the generator connected to it, which means that with an increase in productivity the patient tn jt j tyc is produced similarly to the measurement of time intervals t.

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 of the last start pulse of the second series, the pulse distributor 18 is switched off (Fig. 3, diagram 4, moment tg), and the contents of the meters 15 time intervals of three gigry1 about measuring

receiver channels 10-12, and img.go 1 “d, and t tc. The memory of the calculator 20 is absent (Fig. 3, plot 0, interval tg-t,). From the next step, processing of the measurement results and the calculated values of the coordinates of defects Xd, Ud begin to be printed. The calculator 20 checks the status of the remote control (not shown) of the data input unit 22 for the presence of the Change coordinate command. If the command Change coordinates is typed on the remote control of the data input block 22, the device switches the Search mode to the Data input mode. In the RAM of the calculator 20, new coordinates of the acceptance centers of the transducers 8 and 7 are entered, and

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coordinates Xft, Ud and Xd, on the control panel of the data input unit 22, the Search on command is typed. The device goes into Search mode. If there is no change of coordinates, the device checks for the Search enable command. If this command is absent, the presence of the End command is checked. If this command is typed on the control panel of unit 22, the device stops. Coordinates are changed both when three receiving transducers 7-9 and block 3 are moved to the new inspection area of the controlled 5th item, and in case of clarification

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the coordinates of the transducers 7 and 8 when calibrating the device before starting work in a new zone.

The proposed device makes it possible to determine the angular position of the projection of the acoustic axis of the transducer and the scanning surface in the selected coordinate system, which leads to an increase in the performance of ultrasonic testing of maltreatments with a large surface area.

Purchase Forms

A device for determining the coordinate of defects, comprising a transducer, an ultrasonic flaw detector connected to a transducer, and a unit for determining the location of the transducer from the first radiator and the generator connected to it, which means that with an increase in productivity 5I38

trol, it is equipped with a second emitter of three receiving converters, HUBtMH CONNECTING with three receiving and measuring channels, each of which consists of a series-connected amplifier with AGC, a threshold element and a time interval meter, a pulse distributor, an OR element, defect master, second generator, output connected to the second emitter, and computer with digital printing, inputs

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the start-ups of time interval meters are combined and connected to the output of the ШШ element, the first and second outputs of the pulse distributor are connected to the inputs of the start of the first and second generators and the inputs of the OR element, the outputs of the receiving and measuring channels, the defect setter and the ultrasonic flaw detector and the pulse distributor input connected to the transmitter, and the emitters are installed equidistant to the converter.

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