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Automatic calibration device and automatic calibration method for ultrasonic probe

An automatic calibration and ultrasonic technology, applied in the direction of measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve the problems of long time consumption and low work efficiency, and achieve efficiency improvement, heavy weight, and automation The effect of calibration

Pending Publication Date: 2020-06-16
ZHEJIANG PROVINCIAL SPECIAL EQUIP INSPECTION & RES INST
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Problems solved by technology

[0004] Ultrasonic flaw detection needs to make a flaw detection curve for ultrasonic flaw detection after measuring the front length and K value of the probe. The whole process takes a long time and the work efficiency is not high.

Method used

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  • Automatic calibration device and automatic calibration method for ultrasonic probe
  • Automatic calibration device and automatic calibration method for ultrasonic probe
  • Automatic calibration device and automatic calibration method for ultrasonic probe

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Embodiment Construction

[0028] Further description will be given below in conjunction with the embodiments shown in the accompanying drawings.

[0029] Existing methods for measuring the length of the leading edge of the probe (such as Figure 5 Shown): Put the probe on the test block (CSK-IA test block) 1, move the probe to find the maximum reflected wave of the radius of the arc surface on the right side of the test block (100mm), the length of the front edge of the probe is 100mm minus the front end of the probe to The distance from the edge of the test block, the position of the center of the circle at this time is the incident point of the sound beam of the probe. The determination of the K value of the probe is carried out by using the round hole on the left side of the test block (the measurement method is according to the manufacturer's instructions).

[0030] The ultrasonic probe automatic calibration device provided by the invention comprises the test block (similar to the standard CSK-IA ...

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Abstract

The invention relates to a calibration device and an automatic calibration method. According to the technical scheme, the automatic calibration device for an ultrasonic probe comprises a test block for calibrating the ultrasonic probe; the device is characterized in that an ultrasonic wafer array is mounted on the arc surface of the right side of the test block; the ultrasonic wafer array is covered with a resistive film, and the resistive film is connected with an external ultrasonic flaw detector through a wire so as to output a measuring point position signal; due to the fact that ultrasonic waves are a beam of sound waves, the maximum sound wave receiving position in the wafer array is taken as a feedback signal, and the K value of the probe can be calculated according to the positionsignal; the upper surface of the test block is provided with a front edge measuring assembly for measuring the length of the front edge of the probe; and the front edge measuring assembly is also communicated with an external ultrasonic flaw detector through a wire to output distance measurement data. According to the calibration device and the automatic calibration method, various ultrasonic angle probes can be automatically calibrated, and a flaw detection curve is automatically generated, so the workload of inspection personnel is reduced, and the efficiency is improved.

Description

technical field [0001] The invention relates to a calibration device and an automatic calibration method, in particular to an instrument and a method for automatically measuring the frontal length and K value of an ultrasonic probe. Background technique [0002] During ultrasonic flaw detection, the length of the front of the probe (the distance from the incident point of the ultrasonic beam to the front end of the probe) and the K value (the tangent of the refraction angle of the ultrasonic waves emitted by the ultrasonic oblique probe in the material) are important parameters of the probe, which affect the welding seam. An important factor in defect localization. Therefore, each time ultrasonic testing is performed, the frontal length and K value of the probe must be accurately measured (ie, calibrated). [0003] When calibrating the probe manually, the selected probe should be electrically connected with the ultrasonic flaw detector (hereinafter referred to as the flaw d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/30
CPCG01N29/30G01N2291/023G01N2291/2675
Inventor 赵立钟丰平
Owner ZHEJIANG PROVINCIAL SPECIAL EQUIP INSPECTION & RES INST
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