TY - GEN
T1 - Numerical characterization of mechanochromic photonic crystals for structural health monitoring
AU - Piccolo, Valentina
AU - Piotrowska, Anna
AU - Chiappini, Andrea
AU - Vaccari, Alessandro
AU - Ferrari, Maurizio
AU - Deseri, Luca
AU - Zonta, Daniele
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - Experimental validation
KW - Industrial applications
KW - Modeling
KW - Smart structures
UR - http://www.scopus.com/inward/record.url?scp=84995376637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84995376637&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84995376637
T3 - 8th European Workshop on Structural Health Monitoring, EWSHM 2016
SP - 1595
EP - 1603
BT - 8th European Workshop on Structural Health Monitoring, EWSHM 2016
PB - NDT.net
T2 - 8th European Workshop on Structural Health Monitoring, EWSHM 2016
Y2 - 5 July 2016 through 8 July 2016
ER -