AE signal processing and DSP implementation based on wavelet packet analysis

Jingrong Zhao; Ke Wang; Mi Yang

doi:10.1117/12.664336

20 February 2006 AE signal processing and DSP implementation based on wavelet packet analysis

Jingrong Zhao, Ke Wang, Mi Yang

Proceedings Volume 6041, ICMIT 2005: Information Systems and Signal Processing; 60411H (2006) https://doi.org/10.1117/12.664336
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

To improve the accuracy of AE (Acoustic Emission) testing, the wavelet packet analysis was introduced to process the AE signals. Extraction of the fault characteristic information would be influenced greatly if the faulted AE signal was not effectively denoised. Based on discussing the fast searching algorithm of BWPB (Best Wavelet Packet Basis) adopting Shannon entropy, a new method based on BWPB was presented to denoise the AE signal from the faulted composite plate. Analyzing was performed on the denoised signal and the fault characteristic information was exacted. To improve the real-time performance of the wavelet packet analysis algorithm, it was performed on the DSP (Digital Signal Processing) chip TMS320VC5409. The experimental results show that the algorithm can not only reduce the noise by 10dB but also effectively extract the faulted characteristics information from the AE signal.

Citation Download Citation

Jingrong Zhao, Ke Wang, and Mi Yang "AE signal processing and DSP implementation based on wavelet packet analysis", Proc. SPIE 6041, ICMIT 2005: Information Systems and Signal Processing, 60411H (20 February 2006); https://doi.org/10.1117/12.664336

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available