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Proceedings Paper

Recent advances in an artificial neural system for structural health monitoring
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Paper Abstract

This paper discusses recent advances in modeling and simulation of an artificial neural system and simulation of wave propagation for designing structural health monitoring systems. An artificial neural system was modeled using piezoceramic nerves and electronic components. Wave propagation in a panel is modeled using classical plate theory and a closed-form solution of wave propagation and reflection is obtained. Equations representing a half sine input similar to a projectile impact or a tone burst excitation were added to the existing algorithm that predicts the response of the artificial neural system due to impulse inputs. Firing switches have been modeled in the simulation to predict the sequential firing of the neurons as the waves pass over them. Also, new active fiber sensors have been designed for use in the artificial neural system. Simulated responses of the artificial neural system are shown in this paper and indicate that large neural systems can be formed with hundreds of sensor nodes. Experiments were performed to study a small neural system on a glass fiber panel. Waves were induced in the panel due to a lead break to simulate a crack and due to an impact from an impact hammer. Testing showed the location of a crack could be determined within the unit cell of the neural system for an orthotropic panel.

Paper Details

Date Published: 1 August 2003
PDF: 12 pages
Proc. SPIE 5046, Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites II, (1 August 2003); doi: 10.1117/12.484118
Show Author Affiliations
Goutham R. Kirikera, Univ. of Cincinnati (United States)
Saurabh Datta, Univ. of Cincinnati (United States)
Mark J. Schulz, Univ. of Cincinnati (United States)
Anindya Ghoshal, NASA Langley Research Ctr. (United States)
Mannur J. Sundaresan, North Carolina Agricultural and Technical State Univ. (United States)
Jeff Feaster, Naval Undersea Warfare Ctr. (United States)
Derke Hughes, Naval Undersea Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 5046:
Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites II
Andrew L. Gyekenyesi; Peter J. Shull, Editor(s)

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