Journal ArticleDOI
Determination of impact location on composite stiffened panels
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TLDR
In this article, a methodology for impact identification on composite stiffened panels using piezoceramic sensors has been presented, where a large number of impacts covering a wide range of energies (corresponding to small and large mass impacts) at various locations of a composite stiffening panel have been simulated using the finite element (FE) method.Abstract:
In this work a methodology for impact identification on composite stiffened panels using piezoceramic sensors has been presented. A large number of impacts covering a wide range of energies (corresponding to small and large mass impacts) at various locations of a composite stiffened panel have been simulated using the finite element (FE) method. To predict the impact location, artificial neural networks have been established using the data generated from FE analyses. A number of sensor signal features have been examined as inputs to the neural network and the effect of noise on the predictions has been investigated. The results of the study show that the trained network is capable of locating impacts with different energies at different locations (e.g. in the bay, over/under the stringer and on the foot of the stringer) in a complicated structure such as a composite stiffened panel.read more
Citations
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Journal ArticleDOI
Materials that couple sensing, actuation, computation, and communication
M. A. McEvoy,Nikolaus Correll +1 more
TL;DR: Robotic materials can enable smart composites that autonomously change their shape, stiffness, or physical appearance in a fully programmable way, extending the functionality of classical “smart materials.”
Journal ArticleDOI
Piezoelectric Transducer-Based Structural Health Monitoring for Aircraft Applications.
TL;DR: The requirements for practical implementation and use of structural health monitoring systems in aircraft application, state-of-the-art techniques for solving some practical issues, such as sensor network integration, scalability to large structures, reliability and effect of environmental conditions, robust damage detection and quantification are discussed.
Journal ArticleDOI
Assessment of delay-and-sum algorithms for damage detection in aluminium and composite plates
Z. Sharif-Khodaei,M.H. Aliabadi +1 more
TL;DR: In this article, a modified delay-and-sum algorithm is proposed for detecting impact damage in composite plates with and without a stiffener, which is shown to capture and localize damage with only four transducers.
Journal ArticleDOI
Identification of impact force for smart composite stiffened panels
TL;DR: In this paper, the authors used an efficient nonlinear finite element (FE) model of a sensorized composite stiffened panel to reconstruct the impact force history using artificial neural networks (ANNs) and spectral components of sensor data recorded by piezoceramic sensors.
Journal ArticleDOI
Single-Sensor Acoustic Emission Source Localization in Plate-Like Structures Using Deep Learning
TL;DR: Two deep learning approaches to localize acoustic emissions (AE) sources within metallic plates with geometric features, such as rivet-connected stiffeners and a stack of autoencoders and a convolutional neural network are introduced.
References
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Book
Neural Networks: A Comprehensive Foundation
TL;DR: Thorough, well-organized, and completely up to date, this book examines all the important aspects of this emerging technology, including the learning process, back-propagation learning, radial-basis function networks, self-organizing systems, modular networks, temporal processing and neurodynamics, and VLSI implementation of neural networks.
Journal ArticleDOI
Orthonormal bases of compactly supported wavelets
TL;DR: This work construct orthonormal bases of compactly supported wavelets, with arbitrarily high regularity, by reviewing the concept of multiresolution analysis as well as several algorithms in vision decomposition and reconstruction.
Journal ArticleDOI
Impact on composite structures
G. A. O. Davies,Robin Olsson +1 more
TL;DR: The problem of impact damage in laminated composite structures, and the consequent reduction in residual strength, has been a topic of continual research for over two decades as mentioned in this paper, and the number of journal papers on the subject now runs into four figures and most have been conscientiously reviewed by Abrate.
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