Experimental and numerical studies of the oblique defects in the pipes using a chaotic oscillator based on ultrasonic guided waves

被引：28

作者：

Yang, Fei ^{[1
]}

Jing, Lin ^{[2
]}

Zhang, Weiwei ^{[3
]}

Yan, Yinzhong ^{[1
]}

Ma, Hongwei ^{[4
,5
]}

机构：

[1] Jinan Univ, Coll Sci & Engn, Guangzhou 510632, Guangdong, Peoples R China

[2] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China

[3] Taiyuan Univ Sci & Technol, Dept Mech, Taiyuan 030024, Peoples R China

[4] Jinan Univ, Moe Key Lab Disaster Forecast & Control Engn, Guangzhou 510632, Guangdong, Peoples R China

[5] Qinghai Univ, Sch Civil Engn, Xining 810016, Peoples R China

来源：

JOURNAL OF SOUND AND VIBRATION | 2015年 / 347卷

基金：

中国国家自然科学基金;

关键词：

DUFFING OSCILLATOR; SIGNAL-DETECTION; LAMB WAVES; MODE; PROPAGATION; REFLECTION; SCATTERING; INSPECTION; NOTCHES; NOISE;

D O I：

10.1016/j.jsv.2015.02.014

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The longitudinal ultrasonic guided waves in oblique defects pipes were investigated experimentally and numerically in the paper. A novel method of the defect detection for pipes is proposed based on the Duffing -Holmes chaotic oscillator. Five kinds of defects with inclined angle of 0 degrees, 30 degrees, 45 degrees, 60 degrees and 90 degrees were discussed arid analyzed, respectively. Based on the experiment, the corresponding simulations were conducted by using finite element software [S-DYNA. Both experimental arid numerical results show that this proposed method could be used to inspect the weaker guided waves; and the reflection coefficient of echo increases with the decrease of the inclined angle. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：218 / 231

页数：14

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