Abramovich, H., Burgard, M., Edery-Azulay, L., Evans, K. E., Hoffmeister, M., Miller, W., Scarpa, F., Smith, C. W., Tee, Kong-Fah ORCID: https://orcid.org/0000-0003-3202-873X, Schönecker, A. and Seffner, L. (2008) Sensing and actuation of smart chiral honeycombs. Proceedings of SPIE, 6935,. ISSN 0277-786X (doi:10.1117/12.775588)

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Abstract

A novel concept of auxetic (negative Poisson’s ratio) honeycomb for active microwave absorbers and structural health monitoring applications has been developed within the European FP6 project CHISMACOMB (CHIral SMArt honeyCOMB). The honeycomb concept is made of tessellating cylinders and joining ligaments to form a noncentresymmetric structure, with PMC devices embedded in the core. The honeycomb features a negative Poisson’s ratio effect, synclastic curvature, enhanced compressive strength properties and sensing and actuation characteristics because of the piezo elements embedded. A tetrachiral demonstrator is developed and manufactured, subjected to dynamic testing (modal analysis). The response of the piezosensors under broadband white noise excitation is measured to evaluate the sensing capabilities of the honeycomb. Actuation authority is probed using progressive voltage loading. Numerical models are developed to simulate the piezoelectric response of the smart honeycombs and their mechanical performance.

Item Type:	Article
Additional Information:	Originally paper presented at SPIE 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, held 9-13 March 2008, San Diego, CA, USA.
Uncontrolled Keywords:	chiral honeycomb, piezosensors, acoustic wave propagation
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Pre-2014 Departments:	School of Engineering School of Engineering > Department of Civil Engineering
Related URLs:	Organisation Publisher Organisation Author
Last Modified:	14 Oct 2016 09:08
URI:	http://gala.gre.ac.uk/id/eprint/3299

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