SU705251A1 - Ultrasonic resonance thickness meter - Google Patents

Description

(54) ULTRASONIC RESONANT THICKNESS MEASURES

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The invention concerns a non-destructive ultrasound method and can be used to control the thickness of the products:

A ultrasonic resonant thickness gauge is known, which comprises an electroacoustic transducer, a sweep frequency generator, and a processing unit 1.

The disadvantage of it is a low iOrg control.

The closest to the invention in terms of its technical essence and the achieved result is an ultrasonic resonance toidanmer, containing series-connected oscillating frequency generator, a broadband electroacoustic converter and a processing and recording unit, and an automatic shutdown circuit of the controlled product (2.

A disadvantage of the known thickness gauge is the low manufacturing capacity of the oshrpb i.

The aim of the invention is a performance monitoring control;

This is achieved by the fact that its thickness gauge is equipped with a series-connected additional electrical acoustical converter, an amplifier, the output of which is connected to the input of the circuit of automatic shutdown of the movement of the controlled product, and the analogue.

Kpoiwfe, a broadband electroacoustic transducer is electrically and acoustically equipped with an additional electroacoustic signal generator and is located in the center of the latter.

The drawing shows a structural diagram of an ultrasound resonant thickness gauge.

The thickness gauge contains a series-oscillating frequency converter, a broadband electroacoustic transducer 2, a processing and recording unit 3, and also a circuit 4 for automatically switching off the movement of the monitored product.

Claims (2)

In addition, it is equipped with an additional electrical converter with a converter 5, an amplifier 6, the code of which is connected to the input of circuit 4 for automatically disconnecting the motion of the controlled product, and a signaling device i. Broadband electroacoustic transducer 2 eSh: trsh; M Gapkudash yy from jrwjxistfi from an additional electroacoustic transducer 5 to located in the center of the ate. Ultrasonic thickness gauge works as follows. Under the action of high-frequency voltage, oscillating frequency generator 1 excites a broadband electroacoustic transducer 2. Ultrasonic oscillations dissipate local irregularities on the surface of the device and affect an additional electroacoustic converter 5. The resultant one. The electrical amplifier is amplified by the 6 K amplifier through a switch 8 on the 4th automatic circuit of the motor disconnection to the surface of the wideband acoustic transducer 2. Signals siqiyei 6 the presence of a local PCB on the surface of the product. When checking the smooth surface of the product, the signal ka to the converter 5 OTCyrcfflyeT and the thickness gauge scheme p are used in the o6bPiMb M way. The invention makes it possible to increase the productivity of the control, as well as eliminate the sorting out of products associated with false processing. circuit automation. The formula invented is 1, 1. An ultrasonic resonant thickness gauge containing a series-connected oscillating frequency generator, a broadband electroacoustic transducer and a processing and recording unit, and an automatic control circuit of the controlled product, in order to improve the performance of the control, it is equipped with a series-connected electroacoustic conversion; an amplifier, the output of which is connected to the player. . Controlled movement of the article, and ygNalyzat6 gomG {f 2. Thickness of claim 1, wherein -. Sch and with the fact that the broadband electroacoustic Converter electrically and acoustic isolated from an additional electroacoustic converter and is located in the center of the latter. Sources of information taken into account by experts 1. Author's certificate of the USSR N 216356, cl. G 01 B 17/02, 1965 ..,. 2. Flaw detection 1967, No. 4, p. 23 (prototype).