Page 48 - 《应用声学》2023年第4期

第 42 卷 第 4 期 Vol. 42, No. 4
2023 年 7 月 Journal of Applied Acoustics July, 2023

⋄ 研究报告 ⋄

弯管缺陷尺寸与位置对超声波传播特性影响 ∗

王 畅 王兆坤 刘俊燚 陈传智 李 宁 †

(长江大学机械结构强度与振动研究所 荆州 434000)
摘要：基于超声数值模拟，研究椭圆形冲蚀缺陷的几何尺寸和位置与接收端超声波能量之间的关系。通过控
制椭圆形冲蚀缺陷几何尺寸，研究缺陷在弯管 θ = 0 且 ψ = 20 位置处，不同几何尺寸的缺陷对接收端压电
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传感器 (PZT) 时域信号能量的影响。此外，为研究相同几何尺寸的椭圆形冲蚀缺陷位于弯管不同位置时，对
接收端时域信号能量的影响，椭圆形冲蚀缺陷位于弯管以下位置：ψ = 20 且 θ 取值范围为 0 ∼ 30 ，每间隔
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2.5 取一个值；θ = 0 且 ψ 取值范围为 15 ∼ 45 ，每间隔 2.5 取一个值。数值模拟结果表明：缺陷位于弯管
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θ = 0 且 ψ = 20 位置处，随着缺陷面积增加，接收端上侧 PZT 时域信号能量减少；随着缺陷深度和缺陷
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深度与面积都增加的两种情况下，上侧 PZT 时域信号能量均出现先减小，当缺陷深度达到弯管厚度的 75%
(6 mm) 时，上侧 PZT 时域信号能量再增加；相同几何尺寸的缺陷位于弯管 θ = 0 ，随着 ψ 增加，上侧 PZT 时
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域信号能量先减小后增加；相同几何尺寸的缺陷位于弯管 ψ = 20 ，随着 θ 增加，θ 与 E sub 呈现出单调递增的
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关系。通过上述结果可知，椭圆形冲蚀缺陷的几何尺寸和位置与接收端时域信号能量之间存在相关性，基于此
可通过能量变化实现对缺陷几何尺寸大小和位置的评估。
关键词：弯管；椭圆形冲蚀缺陷；时域信号能量；缺陷位置和大小
中图法分类号: TE988 文献标识码: A 文章编号: 1000-310X(2023)04-0710-12
DOI: 10.11684/j.issn.1000-310X.2023.04.006
Influence of elbow defect size and position on ultrasonic propagation

characteristics

WANG Chang WANG Zhaokun LIU Junyi CHEN Chuanzhi LI Ning
(Institute of Strength and Vibration of Mechanical Structures of Yangtze University, Hubei 434000, China)

Abstract: Based on ultrasonic numerical simulation, the relationship between the geometric size and location
of elliptical erosion defects and the ultrasonic energy at the receiving end is studied. By controlling the
geometric size of the elliptical erosion defect, the defect in the elbow is studied θ = 0 and ψ = 20 , the effect
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of defects with different geometric dimensions on the time domain signal energy of the piezoelectric ceramic
transducer (PZT) at the receiving end. In addition, to study the influence of elliptical erosion defects with the
same geometric size on the time-domain signal energy of the receiving end when they are located at different
positions of the elbow, the elliptical erosion defect is located below the elbow: ψ = 20 and the value range of
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θ is 0 –30 , and a value is taken every 2.5 ; θ = 0 and the value range of ψ is 15 –45 , and a value is taken
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every 2.5 . The numerical simulation results show that the defect is located at the position of θ = 0 and
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ψ = 20 . With the increase of the defect area, the energy of the PZT time domain sequence on the upper
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2022-11-07 收稿; 2022-12-09 定稿
中国石油科技创新基金资助项目 (2020D-5007-0503), 江苏省油 (气) 井设备工程技术研究中心开放课题 (HT202102)
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作者简介: 王畅 (1999– ), 男, 重庆合川人, 硕士研究生, 研究方向: 无损检测。
† 通信作者 E-mail: lining@yangtzeu.edu.cn