Nonlinear acoustic modulation technique for nondestructive flaw detection

1997 ◽  
Vol 101 (5) ◽  
pp. 3029-3030 ◽  
Author(s):  
J. P. Kim ◽  
E. J. Kim ◽  
S. W. Yoon ◽  
A. Sutin
Keyword(s):  
Flaw Detection ◽  
Modulation Technique ◽  
Nonlinear Acoustic ◽  
Acoustic Modulation

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

A study of the vibro-acoustic modulation technique for the detection of cracks in metals

2006 ◽  
Vol 119 (3) ◽  
pp. 1463-1475 ◽  
Author(s):  
Philippe Duffour ◽  
Marco Morbidini ◽  
Peter Cawley
Keyword(s):  
Modulation Technique ◽  
Acoustic Modulation

Vibro-acoustic modulation technique for micro-crack detection in pipeline

2011 ◽  
Author(s):  
Jingpin Jiao ◽  
Lei Zheng ◽  
Guorong Song ◽  
Cunfu He ◽  
Bin Wu
Keyword(s):  
Crack Detection ◽  
Modulation Technique ◽  
Acoustic Modulation

scholarly journals NON-DESTRUCTIVE LEAK DETECTION IN GALVANIZED IRON PIPE USING NONLINEAR ACOUSTIC MODULATION METHOD

SINERGI ◽  
2018 ◽  
Vol 22 (1) ◽  
pp. 19
Author(s):  
Gigih Priyandoko
Keyword(s):  
Low Frequency ◽  
Modulation Method ◽  
Destructive Testing ◽  
Signal Features ◽  
Frequency Excitation ◽  
Nonlinear Acoustic ◽  
The Difference ◽  
Acoustic Modulation ◽  
Wide Group ◽  
Non Destructive

Non-destructive testing is a wide group of analysis techniques used in science and industry to evaluate the properties of a structure without causing damage to it. The main objective of this project is to carry out experiment to detect leakage in pipeline using nonlinear acoustic modulation method. The nonlinear acoustic modulation approach with low frequency excitation and high frequency acoustic wave is used to reveal modulations in the presence of leak. The pipe used in this experiment was galvanized iron pipe. The experiment is started with the experiment of undamaged specimen and followed by the experiment of damaged specimen with manually applied leak. The results obtained are being observed and the difference between the specimen without leak and with leak can be distinguished. The distance of the leak and the distance of the outlet detected is nearly accurate to the exact location which is leak at 4.0 m and outlet at 6.0 m. Therefore, the results demonstrate that leakage can be detected using nonlinear acoustic modulation, and proved the objective of distinguish the difference between the results of specimen without leak and with leak has succeeded. The damage detection process can be eased with the knowledge on the signal features.

Sign in / Sign up

Export Citation Format

Share Document