Proceedings ArticleDOI
Characterization of aircraft joints using ultrasonic guided waves and physically based feature extraction
M. K.T. Hansch,Krishna M. Rajana,Joseph L. Rose +2 more
- Vol. 2, pp 1193-1196
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TLDR
In this paper, an approach to characterize or classify the inspection region is done by feature selection in order to acquire physically-based information, and results from lab specimens and from measurements on a Boeing 737-222 specimen manufactured in 1968.Abstract:
The guided wave technique is an emerging inspection procedure for the inspection of adhesively bonded lap splice joints and tear straps in aging aircraft. Due to inspection of joint locations with area scanning techniques, the evaluation of a joint region with a line scanning makes the guided wave technique a potential candidate for fast joint inspection and probably for further data evaluation for characterization of the defected imperfections. An approach to characterize or classify the inspection region is done by feature selection in order to acquire physically based information. Results are presented from lab specimens and from measurements on a Boeing 737-222 specimen manufactured in 1968read more
Citations
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Journal ArticleDOI
Study of the fundamental Lamb modes interaction with symmetrical notches
TL;DR: In this paper, the power reflection and transmission coefficients for a symmetrical notch were computed using finite element and the well-known average power flow equation, with the help of a finite element finite element model.
Dissertation
Étude expérimentale et numérique de l'interaction des ondes de lamb en présence d'endommagements dans des structures d'aluminium
TL;DR: In this article, the authors propose a systeme experimental de role non destructif (CSN) based on Lamb in the presence of an endommagement complex, in which two capteurs piezoelectriques places sur les deux faces opposees of the structure.
Journal ArticleDOI
Numerical and Experimental Characterization of a Composite Secondary Bonded Adhesive Lap Joint Using the Ultrasonics method
TL;DR: In this article, an attempt is made to classify the quality of composite secondary bonding using nondestructive ultrasonic inspection methods, such as TT, PE, and air coupled guided wave techniques.
Book ChapterDOI
Generation of a Selected Lamb Mode by Piezoceramic Transducers: Application to Nondestructive Testing of Aeronautical Structures
TL;DR: In this article, the authors highlight the need for the non-destructive testing (NDT) of aircraft, petrochemical and naval structures and highlight the most appropriate NDT technique to plate-like structures.
References
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Proceedings ArticleDOI
A k-nearest neighbor artificial neural network classifier
Anil K. Jain,Jianchang Mao +1 more
TL;DR: The authors propose an artificial neural network architecture to implement the k-nearest neighbor (k-NN) classifier which employs a k-maximum network which has some advantages over the 'winner-take-all' type of networks and other techniques used to select the maximum input.
Book ChapterDOI
Ultrasonic Guided Waves for Lap Splice Joint Inspection in Aging Aircraft
TL;DR: Highlights of the recent work on aging aircraft inspection are presented, and the concepts of utilization of wave structure in mode selection, angle and frequency tuning for optimal use of the Lamb type guided waves are addressed.
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