Numerical characterization of mechanochromic photonic crystals for structural health monitoring

Valentina Piccolo, Anna Piotrowska, Andrea Chiappini, Alessandro Vaccari, Maurizio Ferrari, Luca Deseri, Daniele Zonta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We discuss the possible use of photonic crystals as strain sensors. We demonstrate the feasible fabrication of a crystal having sub-micrometric polystyrene colloidal spheres in a PDMS matrix on a rubber substrate, and we demonstrate that the photonic properties change with substrate elongation according to theoretical prediction. The crystal's sensitivity to strain depends directly on interplanar spacing and on Poisson's ratio. To enhance the crystal strain resolution, we propose to fabricate inverse photonic structures, which exhibit a high geometrical Poisson's ratio, and we investigate their photomechanical behavior through nonlinear Finite Element analysis.

Original languageEnglish (US)
Title of host publication8th European Workshop on Structural Health Monitoring, EWSHM 2016
PublisherNDT.net
Pages1595-1603
Number of pages9
Volume3
ISBN (Electronic)9781510827936
StatePublished - 2016
Event8th European Workshop on Structural Health Monitoring, EWSHM 2016 - Bilbao, Spain
Duration: Jul 5 2016Jul 8 2016

Other

Other8th European Workshop on Structural Health Monitoring, EWSHM 2016
CountrySpain
CityBilbao
Period7/5/167/8/16

Keywords

  • Experimental validation
  • Industrial applications
  • Modeling
  • Smart structures

ASJC Scopus subject areas

  • Health Information Management
  • Computer Science Applications

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