scholarly journals Waveguide metamaterial rod as mechanical acoustic filter for enhancing nonlinear ultrasonic detection

APL Materials ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 061115
Author(s):  
Sandeep Kumar S R ◽  
Krishnadas V K ◽  
Krishnan Balasubramaniam ◽  
Prabhu Rajagopal
Keyword(s):  
Ultrasonic Detection ◽  
Nonlinear Ultrasonic

The use of non-collinear mixing for nonlinear ultrasonic detection of plasticity and fatigue

2009 ◽  
Vol 126 (5) ◽  
pp. EL117-EL122 ◽  
Author(s):  
Anthony J. Croxford ◽  
Paul D. Wilcox ◽  
Bruce W. Drinkwater ◽  
Peter B. Nagy
Keyword(s):  
Ultrasonic Detection ◽  
Nonlinear Ultrasonic

scholarly journals Simulation and Experimental Study of Closed Crack Detection by Ultrasonic Nonlinearity Under Electromagnetic Loading

2020 ◽  
Author(s):  
Chuang Zhang ◽  
Longlong He ◽  
Suzhen Liu ◽  
Qingxin Yang
Keyword(s):  
Crack Detection ◽  
Response Signal ◽  
Closed Crack ◽  
Ultrasonic Detection ◽  
External Interference ◽  
Weak Response ◽  
Nonlinear Ultrasonic ◽  
Testing Technology ◽  
Frequency Components ◽  
Metal Materials

The reliability of micro-damage detection of metal materials plays a crucial role in the safe and reliable operation of large equipment. In recent years, nonlinear ultrasonic nondestructive testing technology has achieved good development in closed cracks detection, but the problem of nonlinear ultrasonic detection of closed cracks is weak response signal and vulnerable to external interference. This paper realizes the modulation of the ultrasonic wave by electromagnetic loading at the closed cracks, which can effectively enrich the frequency components of nonlinear ultrasonic and magnify the amplitude. This lays a foundation for further research on nonlinear ultrasonic detection of closed cracks under electromagnetic loading.

scholarly journals Nonlinear Ultrasonic Detection Method for Delamination Damage of Lined Anti-Corrosion Pipes Using PZT Transducers

2018 ◽  
Vol 8 (11) ◽  
pp. 2240 ◽  
Author(s):  
Xiaobin Hong ◽  
Yuan Liu ◽  
Xiaohui Lin ◽  
Zongqiang Luo ◽  
Zhenwei He
Keyword(s):  
Damage Detection ◽  
Detection Method ◽  
Wavelet Packet ◽  
Nonlinear Coefficient ◽  
Wavelet Packet Transform ◽  
Third Order ◽  
Ultrasonic Detection ◽  
Hilbert Huang Transform ◽  
Nonlinear Ultrasonic ◽  
Delamination Damage

Lined anti-corrosion pipes are widely used in oil and gas, petrochemical, pharmaceutical industries. However, defects, especially delamination, may occur in the production and service of pipes which result in safety accidents. Based on nonlinear ultrasonic theory, this paper studied the delamination detection method using the nonlinear harmonics for lined anti-corrosion pipes. The response characteristics of the anti-corrosion pipe were obtained through a sweep sine response experiment and the preferred excitation frequency was determined. The Wavelet Packet transform and Hilbert–Huang transform is applied for signal process and feature extraction. Then, a series of experiments were carried out and the results were analyzed and discussed. The results showed that a second-order and third-order nonlinear coefficient increased with the delamination damage. The amplitude of second-harmonic is much stronger than the third-order one. The mean squared error of the nonlinear coefficient, which was processed by Wavelet Packet transform and Hilbert–Huang transform, is smaller than wavelet packet transform and Discrete Fourier transform or processed only Hilbert–Huang transform. The higher harmonics can describe the change of delamination damage, which means that the nonlinear ultrasonic detection method could use for damage detection of anti-corrosion pipe. The nonlinear higher-harmonic is sensitive to delamination damage. The nonlinear ultrasonic method has the potential for damage detection for lined anti-corrosion pipes.

Scanning non-collinear wave mixing for nonlinear ultrasonic detection and localization of plasticity

2018 ◽  
Vol 93 ◽  
pp. 1-6 ◽  
Author(s):  
Maoxun Sun ◽  
Yanxun Xiang ◽  
Mingxi Deng ◽  
Jichao Xu ◽  
Fu-Zhen Xuan
Keyword(s):  
Wave Mixing ◽  
Ultrasonic Detection ◽  
Nonlinear Ultrasonic ◽  
Detection And Localization

Nonlinear Ultrasonic Detection of Partially Closed Cracks in Metal Plates Using Static Component of Lamb Waves

2021 ◽  
pp. 102538
Author(s):  
Wujun Zhu ◽  
Zisheng Xu ◽  
Yanxun Xiang ◽  
Changjun Liu ◽  
Mingxi Deng ◽  
...  
Keyword(s):  
Lamb Waves ◽  
Ultrasonic Detection ◽  
Static Component ◽  
Metal Plates ◽  
Nonlinear Ultrasonic

scholarly journals Optimization of Nonlinear Lamb Wave Detection System Parameters in CFRP Laminates

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3186
Author(s):  
Zhenhua Yin ◽  
Ying Tie ◽  
Yuechen Duan ◽  
Cheng Li
Keyword(s):  
Nondestructive Testing ◽  
Response Surface ◽  
Lamb Wave ◽  
Detection System ◽  
Output Level ◽  
Ultrasonic Detection ◽  
Cycle Number ◽  
Cfrp Laminates ◽  
System Parameters ◽  
Nonlinear Ultrasonic

Carbon fiber reinforced polymer (CFRP) laminates, as unique multifunctional materials, are widely applied in various aircraft, such as airliners, fighter planes, and space shuttles. To ensure aircraft safety during the production and application of CFRP laminates, it is necessary to improve the accuracy of nonlinear Lamb wave nondestructive testing to assess the damage in CFRP laminates caused by impact, high temperature, friction, corrosion, etc. In this study, the accuracy of nonlinear ultrasonic nondestructive testing was found to highly depend on the cycle number, output level and gain of the nonlinear ultrasonic detection system. Based on a single-factor experiment that considered the cycle number, output level, and gain of the amplifier as independent variables, a regression analysis was carried out on the fundamental wave amplitude value (A1) and second harmonic amplitude value (A2). Two response surface surrogate models were established to improve the accuracy of nonlinear Lamb wave nondestructive testing and to optimize the detection system parameters. The response surface models were verified via an analysis of variance (ANOVA), significance tests and an error statistical analysis. The results revealed the significant influence of these three factors on A1 and A2. Optimization of the response surface was achieved at eight cycles, an output level of 42 and a gain of 32 dB. Moreover, the nonlinear ultrasonic detection system achieved good operational stability, high accuracy and reliability under the above optimal parameter conditions. This approach provides scientific guidance for the accurate assessment of CFRP laminate damage.

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