Optimized Design of Phased Array Ultrasonic Testing for Polyethylene Pipe Welding Joints
In pipeline engineering applications,polyethylene(PE)pipes have significant advantages over other materials due to their excellent corrosion resistance and toughness.They are widely used in the fields of nuclear power and oil and gas transportation.During the welding process of PE pipes,the factors of welding parameters,personnel operation,and environmental change can affect the welding quality of polyethylene pipelines,leading to internal defects in welded joints and influencing pipeline safe.Phased array ultrasonic testing technology can achieve the non-destructive testing and evaluation of internal structure in polyethylene pipe weld joints.Through the practical phased array ultrasonic testing of PE pipe weld joints,this paper studies the sound attenuation charac-teristics and acoustic dispersion effects of polyethylene materials,and optimizes the ultrasonic phased array testing process for weld joints.The CIVA simulation software is used to implement the sound field and defect simulation of phased array ultrasonic testing in polyethylene pipelines.the effects of the detection and acoustic parameters on the test results are studied to obtain the optimal testing process for PE pipe weld joints.By processing the PE butt fusion joint specimens with typical defects,the reliability testing and process experiments are conducted on the detection process based on the simulation results and wedge coupling components for phased array testing welding joints.The research result of this paper provides a theoretical support and reliable research method for phased array ultrasonic testing in PE pipe joints with defects.
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