SU1305595A1 - Device for measuring parameters of directional pattern of electroacoustical contact transducers - Google Patents

Abstract

This invention relates to the field of ultrasound testing. The aim of the invention is to improve the measurement accuracy by fixing the position of the transducer 4. The device made a mechanical connection of the reporting scale of the ruler 8 with the controlled transducer 4, and the reference node 13 allows you to accurately fix the coordinate position of the transducer 4. 2 silt 9 Yu ;; So about O1 ate with SD

Description

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This invention relates to ultrasound testing.

The purpose of the invention is to increase the measurement accuracy by fixing the coordinate position of the transducer.

Figure 1 shows the acoustic load with reflectors and Hbw is mounted on it with a piezoelectric transducer; Fig. 2 shows a device for measuring the radiation pattern of contact electroacoustic transducers, a general view.

The device consists of an acoustic load 1 with a cylindrical reflector 2 at a depth H (and a cylindrical reflector 3 at a depth Hj, a piezoelectric transducer 4, a base 5, a pin 6 and a clamp

7.Based on 5 fixed ruler

8, on which angular 9-11 and linear 12 scales are applied and the reference node 13 is installed in the form of a frame 14 with a no junction 15 and a bar 16, as well as guide rails 1 7, into which an arrow-stop 18 is inserted with the possibility of free movement vertically.

The pin 6 provides the combination of the axis of the reflector 2 with the zero risk of the linear scale 12 of the ruler 8.

The device works as follows.

A controlled piezoelectric transducer 4 is installed on the acoustic load 1 and, moving it, the maximum echo signal from the reflector 2 is obtained at a depth of And, (transducer 4 position, figure 1). Fix the transducer 4 in this position, move the reading unit and the stop arrow 18 until it comes in contact with the transducer 4 and cut off the distance L from the center of the reflector 2 to the conditional point on the transducer 4 (fig. 1).

. Moving further the transducer 4 along the acoustic load 1, dobi055952

get the maximum signal from the reflector 3 at a depth of H and measure the distance L t center from Razhatel 3 to the conditional point on the converter 5 5. Determine the value and set the reference node in the position corresponding to the value of L ,, on the scale 12. PD-cabinet 10 counts the input angle value

 About controlled transducer 4.

Then, on a scale of 9 or 11, depending on the angle of insertion of the converter, the obtained value of the angle of input ui is set, and the value of L or L is determined on a scale of 12 5, which determines the position of the input point and the arrow of the converter.

The proposed device allows 20 to quickly determine the value of the angle of entry., The position of the point of entry and the boom npeo6pa30BaTejj.

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Claims (1)

Invention Formula A device for measuring the parameters of the radiation pattern of contact electroacoustic transducers, containing an acoustic load a load with two cylindrical reflectors and a linear scale, which is based on the fact that, in order to improve the measurement accuracy, it is equipped with a base on it is a ruler with a linear scale and three angular scales and a reference node mounted for movement relative to the ruler and intended to interact with the transducer, and the acoustic load is set, on the base and fixed in a position in which the zero-risk linear scale is located in a plane perpendicular to the working surface of the acoustic load and passing through the axes of the reflectors. Editor A. Kozoriz Order. 1423/42 Compiled by I. Ardashev Tehred M. Khodanich Proofreader L. Pilipenko Circulation 777 Subscription VNIIPI State Committee CCCF for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 1