Journal ArticleDOI
Decentralized modal identification of structures using parallel factor decomposition and sparse blind source separation
TLDR
A novel decentralized modal identification method based on a multi-linear algebra tool called PARAllel FACtor (PARAFAC) decomposition enables source separation in wavelet packet coefficients with considerable mode mixing, thereby relaxing the conditions to generate over-complete bases, thus reducing the computational burden.About:
This article is published in Mechanical Systems and Signal Processing.The article was published on 2013-12-01. It has received 58 citations till now. The article focuses on the topics: Wavelet packet decomposition & Blind signal separation.read more
Citations
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Journal ArticleDOI
Blind identification of full-field vibration modes from video measurements with phase-based video motion magnification
Yongchao Yang,Charles Dorn,Tyler Mancini,Zachary Talken,Garrett T. Kenyon,Charles R. Farrar,David Mascareñas +6 more
TL;DR: In this article, a multi-scale image processing method is applied on the frames of the video of a vibrating structure to extract the local pixel phases that encode local structural vibration, establishing a full-field spatio-temporal motion matrix.
Journal ArticleDOI
A review of output-only structural mode identification literature employing blind source separation methods
TL;DR: This paper reviews over hundred articles related to the application of BSS and their variants to output-only modal identification and concludes with possible future trends in this area.
Journal ArticleDOI
Blind identification of full-field vibration modes of output-only structures from uniformly-sampled, possibly temporally-aliased (sub-Nyquist), video measurements
Yongchao Yang,Charles Dorn,Tyler Mancini,Zachary Talken,Satish Nagarajaiah,Garrett T. Kenyon,Charles R. Farrar,David Mascareñas +7 more
TL;DR: In this paper, the authors proposed a method to estimate the modal frequencies and damping ratios by using the spatio-temporal uncoupling property of modal expansion of structural vibration responses, which enables a direct modal decoupling of the temporally-aliased vibration measurements.
Journal ArticleDOI
Vibration energy harvesting based monitoring of an operational bridge undergoing forced vibration and train passage
TL;DR: This paper presents the first experimental deployment of piezoelectric vibration energy harvesting devices for monitoring a full-scale bridge undergoing forced dynamic vibrations under operational conditions using energy harvesting signatures against time.
Journal ArticleDOI
Estimation of modal parameters using the sparse component analysis based underdetermined blind source separation
Kaiping Yu,Kai Yang,Yunhe Bai +2 more
TL;DR: The underdetermined blind source separation method based on sparse component analysis in the time–frequency domain is introduced to estimate the modal parameters in this study and the extracted results evidently show the thermal effect on themodal parameters.
References
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Book
A wavelet tour of signal processing
TL;DR: An introduction to a Transient World and an Approximation Tour of Wavelet Packet and Local Cosine Bases.
Journal ArticleDOI
Fast and robust fixed-point algorithms for independent component analysis
TL;DR: Using maximum entropy approximations of differential entropy, a family of new contrast (objective) functions for ICA enable both the estimation of the whole decomposition by minimizing mutual information, and estimation of individual independent components as projection pursuit directions.
Journal ArticleDOI
Analysis of individual differences in multidimensional scaling via an n-way generalization of 'eckart-young' decomposition
J. Douglas Carroll,Jih-Jie Chang +1 more
TL;DR: In this paper, an individual differences model for multidimensional scaling is outlined in which individuals are assumed differentially to weight the several dimensions of a common "psychological space" and a corresponding method of analyzing similarities data is proposed, involving a generalization of Eckart-Young analysis to decomposition of three-way (or higher-way) tables.
Foundations of the PARAFAC procedure: Models and conditions for an "explanatory" multi-model factor analysis
TL;DR: It is shown that an extension of Cattell's principle of rotation to Proportional Profiles (PP) offers a basis for determining explanatory factors for three-way or higher order multi-mode data.
Journal ArticleDOI
A blind source separation technique using second-order statistics
TL;DR: A new source separation technique exploiting the time coherence of the source signals is introduced, which relies only on stationary second-order statistics that are based on a joint diagonalization of a set of covariance matrices.
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