Nonlinear ultrasonic technique for closed crack detection

2015 ◽  
Vol 138 (3) ◽  
pp. 1836-1836 ◽  
Author(s):  
Kyung-Young Jhang ◽  
Hogeon Seo
Keyword(s):  
Crack Detection ◽  
Ultrasonic Technique ◽  
Closed Crack ◽  
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.

A new vibro-acoustic modulation technique for closed crack detection based on electromagnetic loading

2020 ◽  
Vol 157 ◽  
pp. 107004 ◽  
Author(s):  
Chuang Zhang ◽  
Longlong He ◽  
Suzhen Liu ◽  
Qingxin Yang
Keyword(s):  
Crack Detection ◽  
Closed Crack ◽  
Modulation Technique ◽  
Acoustic Modulation

scholarly journals Multi-mode nonlinear ultrasonic phased array for closed crack imaging

2018 ◽  
Author(s):  
Yoshikazu Ohara ◽  
Jack Potter ◽  
Sylvain Haupert ◽  
Hiromichi Nakajima ◽  
Toshihiro Tsuji ◽  
...  
Keyword(s):  
Phased Array ◽  
Closed Crack ◽  
Nonlinear Ultrasonic ◽  
Ultrasonic Phased Array ◽  
Multi Mode
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