Center for Nondestructive Testing and Control

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北京理工大学检测与控制研究中心
Center for Nondestructive Testing and Control, Beijing Institute of Technology

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Multi-degrees of freedom ultrasonic automatic testing equipment for pipes
Function summary
The system can be used to conduct ultrasonic nondestructive testing for thick-walled steel pipes. It can real-timely display the scanning waveform, find the defect signal and finally detect the defect. The system can locate the defect, determine the defect type and save the detecting data. It can eventually realize the detecting, distinguishing, determination and recording of defects.
Technical features
Multithreaded Socket communication secures smooth software process
Cumulative upload and crossover frequency upload realize a large amount of data transmission
Shrinkage figure display and double DC display improve display efficiency and quality
Large data flow storage method based on piecewise cycle storing
Intelligent Offset optimization method based on automatic scanning

Multi-degrees of freedom ultrasonic automatic testing equipment for pipes
Specifications
The detectable defect dimension reaches to the level of mm
The detectable length of the thick-walled pipe reaches to 400mm
Technical principle
Using the deformation transverse wave to detect longitudinal defects on the inner wall of the thick-walled pipes; the deformation transverse wave can be used to conduct a complete testing for the inner wall of thick-wall steel pipes
Based on the energy estimate method of the surface integral of transmission parameters

Principle of defection longitudinal defects in the lining using variant shear wave method detection	Circular beam	Feedback of circular beam defect

Applications
It can be applied to seamless-required components and equipment and has been applied to many detection cases, such as the detection of drill collars.