Author URLs
Document Type
Article
Publication Date
9-2011
Subject: LCSH
Concrete bridges, Concrete bridges--Floors, Nondestructive testing, Acoustic emission testing, Active noise and vibration control
Disciplines
Civil Engineering
Abstract
Delamination is a commonly observed distress in concrete bridge decks. Among all the delamination detection methods, acoustic methods have the advantages of being fast and inexpensive. In traditional acoustic inspection methods, the inspector drags a chain alone or hammers on the bridge deck and detects delamination from the “hollowness” of the sound. The signals are often contaminated by ambient traffic noise and the detection of delamination is highly subjective. This paper describes the performance of an impact-based acoustic NDE method where the traffic noise was filtered by employing a noise cancelling algorithm and where subjectivity was eliminated by introducing feature extraction and pattern recognition algorithms. Different algorithms were compared and the best one was selected in each category. The comparison showed that the modified independent component analysis (ICA) algorithm was most effective in cancelling the traffic noise and features consisting of mel-frequency cepstral coefficients (MFCCs) had the best performance in terms of repeatability and separability. The condition of the bridge deck was then detected by a radial basis function (RBF) neural network. The performance of the system was evaluated using both experimental and field data. The results show that the selected algorithms increase the noise robustness of acoustic methods and perform satisfactorily if the training data is representative.
DOI
10.1007/s10921-011-0114-8
Repository Citation
Zhang, Gang; Harichandran, Ronald S.; and Ramahulli, Pradeep, "Application of Noise Cancelling and Damage Detection Algorithms in NDE of Concrete Bridge Decks Using Impact Signals" (2011). Civil Engineering Faculty Publications. 13.
https://digitalcommons.newhaven.edu/civilengineering-facpubs/13
Publisher Citation
Zhang, G., Harichandran, R.S., and Ramuhalli, P. (2011). “Application of noise cancelling and damage detection algorithms in NDE of concrete bridge decks using impact signals.” Journal of Nondestructive Evaluation, 30(4), 259-274. doi:10.1007/s10921-011-0114-8
Comments
This is the authors' accepted version of the article published in Journal of Nondestructive Evaluation. The final publication is available at Springer via http://dx.doi.org/10.1007/s10921-011-0114-8