Phased array ultrasonic testing method for butt weld of TMCP steel plate

A butt weld and ultrasonic testing technology, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, process detection response signals, instruments, etc. It can solve problems such as structural instability, prone to missed detection, and unsatisfactory detection accuracy , to achieve the effect of improving detection resolution, improving detection sensitivity, and reducing display gain
CN108414616AInactive Publication Date: 2018-08-17中兴海陆工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
中兴海陆工程有限公司
Publication Date
2018-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a phased array ultrasonic testing method for a butt weld of a TMCP steel plate, and belongs to the technical field of non-destructive testing of a quality control system. A testing system of the butt weld of a TMCP steel plate with a wall thickness below 25mm is formed by a phased array ultrasonic detector, a phased array operating system, a high frequency linear array shear wave probe and a calibration test block to realize detection of welding defects of the butt weld. Due to the anisotropic characteristics of TMCP steel, when phased array ultrasonic wave is used to detect the butt weld, a special method is needed to calibrate the testing system and correct test results to achieve accurate detection. The phased array ultrasonic testing method just overcomes the above shortcomings, and the phased array ultrasonic testing method is high in on-site detection efficiency and accurate in results, and has good implementability.
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Description

technical field

[0001] The invention relates to a method for detecting the quality of a TMCP steel butt weld by using a phased array ultrasonic, which belongs to the field of ultrasonic nondestructive testing. Background technique

[0002] TMCP steel products with a wall thickness less than or equal to 25mm are widely used in various fields. TMCP steel plates are generally connected by welding, and the quality of welding is directly related to the stability of the constructed structure. Due to the different planar harmful defects, such as cracks, incomplete penetration, and incomplete fusion, will be produced during the welding process, these defects will cause very serious consequences for the use of large ships, which may lead to breakage of the hull bracket and structural instability, etc. Wait. For this reason, testing after welding is a very important and rigorous technology. At this stage, non-destructive testing methods include ultrasonic, ray, magnetic particle, pen...

Claims

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