摘要
利用COMSOL有限元仿真软件,进行管道建模和缺陷检测仿真,重点研究了温度参数变化对导波波速的影响.仿真结果表明:随着管道温度的升高,管道杨氏模量和超声导波波速均呈下降趋势.研究总结出了管道温度与超声导波波速的关系,并给出减小温度对超声导波波速影响的校正方法,可有效降低管道温度变化对导波检测的不利影响.
The ultrasonic guided wave method has the characteristic that the single point excitation can realize the regional segment detection,which has a significant advantage in the field of pipeline defect detection.The pipeline modeling and defect detection simulation were carried out by using COMSOL finite element simulation software,and the influence of temperature parameters on the velocity of guided wave was studied.The simulation results show that both the Young’s modulus and the ultrasonic wave velocity decreased with the increase of pipeline temperature.The relationship between pipeline temperature and ultrasonic guided wave velocity was studied.The correction method of reducing the influence of temperature on ultrasonic guided wave velocity was presented,by which the adverse effect of pipeline temperature change on guided wave detection can be effectively reduced.
作者
李忠虎
李昊霖
李刚
闫俊红
王金明
LI Zhonghu;LI Haolin;LI Gang;YAN Junhong;WANG Jinming(Information Engineering School , Inner Mongolia University of Science and Technology, Baotou 014010, China;Inner Mongolia Key Laboratory of Solar and Wind Power, Inner Mongolia University of Science and Technology, Baotou 014010, China)
出处
《内蒙古科技大学学报》
CAS
2021年第3期251-255,共5页
Journal of Inner Mongolia University of Science and Technology
基金
内蒙古自治区自然科学基金资助项目(2018LH06001).
关键词
超声导波
缺陷检测
温度
杨氏模量
有限元仿真
ltrasonic guided wave
defect detection
temperature
Young’s modulus
finite element simulation
