Proceedings ArticleDOI
Development of piezoelectric acoustic sensors and bio-inspired embedded sensor array architecture for structural health monitoring
Anindya Ghoshal,William H. Prosser,Ben M. Copeland,Aditi Chattopadhyay +3 more
- pp 4731-4740
TLDR
In this paper, a piezoelectric acoustic sensor made from piezoceramic ribbons is presented, which is capable of sensing high frequency acoustic emissions and impact in a composite/metallic plate.Abstract:
This paper looks at developing novel piezoelectric acoustic sensors, which are capable of sensing high frequency acoustic emissions and impact in a composite/metallic plate. The fabrication of the piezoelectric acoustic sensors made from piezoceramic ribbons would be described in details. An attempt was made to build directionality into the sensing system itself. Continuous sensors placed at right angles on a plate are being discussed as a new approach to measure and locate the source of acoustic waves. Novel signal processing algorithms based on bio - inspired neural systems for spatial filtering of large numbers of embedded sensor arrays in laminated composite media is presented. It is expected that this present work would help in development of sensing techniques for highly efficient health monitoring of integrated aerospace vehicles and structures.read more
Citations
More filters
Journal ArticleDOI
Data to decisions
Laura Mainini,Karen Willcox +1 more
TL;DR: This paper proposes a data-to-decisions framework and a computational strategy to assist real-time decisions associated with structural monitoring and informed by incomplete, noisy measurements and demonstrates the method for an unmanned aerial vehicle composite wing panel undergoing local degradation of its structural properties.
Proceedings ArticleDOI
Sensitivity analysis of surrogate-based methodology for real time structural assessment
Laura Mainini,Karen Willcox +1 more
TL;DR: These investigations illustrate the effectiveness and adaptability of the surrogate-based methodology for real-time structural assessment, and the resulting sensitivities provide a mechanism to tune the online process in order to meet problem-specific time and resource constraints.
Proceedings ArticleDOI
Novel Signal Processing Techniques using Large Sensor Arrays for Fast Acoustic Source Localization
Anindya Ghoshal,Heung Soo Kim +1 more
TL;DR: In this paper, the authors have developed hybrid damage indicators to detect damage effectively in the laminated structures and bio-inspired distributed sensor array system with "hands up" algorithm to reduce the amount of acquiring data for localizing the source of acoustic signal.
References
More filters
Journal Article
AE Source Orientation by Plate Wave Analysis
TL;DR: In this article, the authors used lead breaks to generate simulated acoustic emission signals in an aluminum plate at angles of 0, 30, 60, and 90 degrees with respect to the plane of the plate.
Journal Article
Reflections of AE Waves in Finite Plates: Finite Element Modeling and Experimental Measurements
TL;DR: In this article, the capability of a three-dimensional dynamic finite element method for predicting far-field acoustic emission signals in thin plates of finite lateral extent, including their reflections from the plate edges, was investigated.
Journal Article
Far-field acoustic emission waves by three-dimensional finite element modeling of pencil-lead breaks on a thick plate
TL;DR: In this article, a three-dimensional dynamic finite element code for calculating expected dynamic displacement fields in the far field from various types of acoustic emission sources was validated using pencil-lead breaks on a large 25.4 mm thick steel plate.
Journal ArticleDOI
Application of normal mode expansion to accoustic emission waves in finite plates
M. R. Gorman,W. H. Prosser +1 more
TL;DR: In this paper, a normal mode solution to the classical plate bending equatiion was investigated of its applicability to AE and the same source time function chosen by Weavr and Pao was considered.
Journal ArticleDOI
A continuous sensor to measure acoustic waves in plates
TL;DR: In this paper, an active fiber composite tape with segmented electrodes was modeled for use as a continuous sensor for structural health monitoring of plate structures and the elastic response of a plate with the modeled sensor was computed in closed form at small time steps.