Reference samples (measures) with NTC E'kspert CO-2, CO-3, CO-3P, V1, etc.

The ISO 19675 sample is used for setting up flaw detectors on a phased array and meets the requirements of the new GOST R 50.05.13—2019 and GOST R 50.05.14-2019, as well as the international standard ISO/DIS 19675.The sample allows for a much larger number of calibration procedures than its predecessors.

The sample (measure) of CO-2 is manufactured in accordance with GOST R 55724-2013.

The CO-2 sample is intended for:

• determination of the depth gauge error;
• input angle measurements;
• checking the dead zone of a flaw detector with a converter;
• determination of conditional sensitivity in decibels;
• determination of the maximum sensitivity;
• depth gauge settings with direct PEP.

The CO-2A sample is used for the control of compounds made of metals that differ in acoustic characteristics from low-carbon and low-alloy steels of grades 3 or 20.

The SO-3 measure is made of grade 20 steel or grade 3 steel. The geometric dimensions meet the requirements of GOST R 55724-2013.

The sample (measure) CO-3 is intended for:

• definitions of the exit point and the boom of the PEP;
• determination of the maximum sensitivity of a flaw detector with an inclined PEP based on the use of a reference signal of the cylindrical surface R55;
• settings of the depth gauge of the inclined PEP. For this operation, an echo signal from the cylindrical surface of the sample is used.
• depth gauge settings for direct and RS PEP using a bottom signal from a depth of 30mm.

The sample (measure) SO-3P is designed for calibration of ultrasonic flaw detectors during quality control of rails, as well as parts and assemblies of railway rolling stock with a combined and separate operation scheme of the PEP and a frequency of more than 1.5 MHz.

The standard sample SO-3P is designed for:

• conditional sensitivity settings for echo and delta control;
• dead zone definitions;
• determination of the depth gauge error and the measurement error of the reflector coordinates;
• determination of the boom and the angle of input of the inclined converter;
• determination of the width of the main lobe of the directional pattern of the inclined PEP;
• determination of the pulse conversion coefficient when monitoring a rail or a metal close to it in terms of acoustic properties.

The standard sample SO-1 is made of organic glass of the TOSP brand according to GOST 17622-72.

The standard sample CO-1 is intended for:

• determination of conditional sensitivity, mm, depth of occurrence of a cylindrical hole;
• estimates of the accuracy of the depth gauge for flaw detectors in which the depth gauge is calibrated in units of time;
• estimates of the beam resolution of the direct PEP. At the same time, if all three reflectors are resolved, then three pulses are observed on the flaw detector screen, the distance between which corresponds to 5.5 and 11 mm steel.;
• estimates of the radial resolution of the inclined PEP. At the same time, three pulses from the cylinder surfaces are observed on the flaw detector screen, the distance between the pulses corresponds to 5.5 and 11 mm steel.

Sample V1 is made in accordance with the requirements of international standards EN 12223, ISO2400-1972.

Sample V1 is designed for:

• settings of the depth gauge of the flaw detector and checking the linearity of the scan;
• depth gauge settings of the flaw detector for shear waves;
• sweep speed settings for shear waves;
• determination of the exit point and boom of the inclined converter;
• determining the input angle of the inclined PEP, for this the PEP is installed;
• checking the dead zone of direct or RS PEP;
• checking the resolution of the direct PEP;
• tasks of the reference signal of the flaw detector with an inclined PEP;
• settings of the maximum sensitivity of the flaw detector when working with an inclined probe.

Sample (measure) V2, aka K2, is used to configure small-sized and miniature converters.

Sample V2 is used for:

• settings of the depth gauge of the flaw detector when working with straight RS PEP and inclined RS PEP;
• determination of the exit point and boom of the inclined converter;
• determination of the input angle of inclined PEP;
• settings of the maximum sensitivity of the flaw detector when working with inclined PEP.

The standard image of CO-4 is used to measure the wavelength (frequency) excited by converters with input angles α from 40 ° to 65 ° and a frequency from 1.25 to 5.00 MHz.

Sets of samples of the thickness and velocity of propagation of ultrasonic waves SP001 are designed for verification and adjustment of ultrasonic devices UKS-MG4, as well as for checking the following characteristics: the range of thickness measurements, the limits of the permissible basic absolute error of thickness measurements, the measurement range of the time intervals of propagation of ultrasonic waves, the limits of the permissible basic absolute error of measurements of the time intervals of propagation of ultrasound, the range of measurements of the velocity of propagation of ultrasonic waves, the limits of the permissible basic absolute error of measurements of the velocity of propagation of ultrasound.

The SO-91 sample is a standard sample for testing the sensitivity of impedance and shock flaw detectors. The material is organic glass.

A set of standard samples KMD4-0 40X13 is used to measure the parameters of ultrasonic flaw detectors according to GOST R 55809-2013 - Non-destructive testing. Ultrasonic flaw detectors. Measurement methods of the main parameters

The set of measures of equivalent ultrasonic thickness MET-300 is designed for setting up and primary verification of ultrasonic thickness gauges and ultrasonic flaw detector coordinate meters in the thickness range from 0.5 to 300 mm. The set consists of 25 cylindrical measures reproducing the geometric and equivalent ultrasonic thickness, as well as the passage time of ultrasonic waves.

The set of reference samples KOU-2 is designed to determine the basic parameters of ultrasonic testing according to GOST R 55724-2013. The KOU-2 kit consists of CO-2 and CO-3 samples. Entered in the State Register. It is supplied with verification or calibration.

Areas of application of the KOU-2 kit:

• the choice of the type of converter and the limits of its movement in the control of welded joints of various sizes;
• determination of the calculated value of the maximum sensitivity and adjustment of the equipment;
• estimation of the calculated value of the change in the beam input angle due to attenuation of ultrasound;
• definition of conditional sensitivity;
• evaluation of the beam resolution of the flaw detector when working with straight and inclined converters;
• selection and comparison of inclined transducers by frequency of ultrasonic vibrations;
• assessment of the equivalent area of the detected defect.

Models: Sample according to ISO 19675, CO-2, CO-3, CO-3P, CO-1, V1, V2, CO-4, SP001, CO-91, KMD4-0, MET-300, KOU-2.