Photonic crystals for monitoring fatigue phenomena in steel structures

Daniele Zonta, Andrea Chiappini, Alessandro Chiasera, Maurizio Ferrari, Matteo Pozzi, Lorenzo Battisti, Matteo Benedetti

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

29 Citations (Scopus)

Abstract

This paper introduces the concept and development of a strain sensing system for structural application based on the properties of photonic crystals. Photonic crystals are artificially created periodic structures, usually produced in the thinfilm form, where optical properties are tailored by a periodicity in the refractive index. The idea of using the crystal as a sensor is based on the observation that a distortion in the crystal structure produces a change in the reflected bandwidth. When a photonic crystal is designed to operate in the visible part of the spectrum, a permanent distortion of the film results in a change in its apparent color. This property makes photonic crystals suitable for permanent monitoring of structural elements, as any critical changes in the strain field can be promptly and easily detected by visual inspection. A simple and low-cost example of photonic crystals consists of opals synthesized by vertical deposition. In this contribution we introduce a target application for the fatigue monitoring of wind turbines, and then provide the reader with some basic information concerning modeling of the crystal architecture and fabrication of these structures. Next we discuss their application to strain measurement, specifying how reflection and transmission properties of the opals have to be designed to satisfy the expected strain response of the sensor. Finally, we present the preliminary results of a laboratory validation carried out on thin films applied to a rubber support. 

LanguageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7292
EditionPART 1
DOIs
Publication statusPublished - 2009
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009 - San Diego, CA, United States
Duration: 9 Mar 200912 Mar 2009

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
CountryUnited States
CitySan Diego, CA
Period9/03/0912/03/09

Fingerprint

steel structures
Steel structures
Photonic crystals
Photonic Crystal
Fatigue
Steel
Fatigue of materials
photonics
Monitoring
crystals
Thin Films
Crystal
Strain Measurement
Sensor
Crystals
Strain measurement
Periodic structures
Wind Turbine
Periodic Structures
Rubber

Keywords

  • fatigue
  • monitoring
  • nanospheres
  • photonic crystals
  • strain sensors
  • sisual inspection
  • wind turbine

Cite this

Zonta, D., Chiappini, A., Chiasera, A., Ferrari, M., Pozzi, M., Battisti, L., & Benedetti, M. (2009). Photonic crystals for monitoring fatigue phenomena in steel structures. In Proceedings of SPIE - The International Society for Optical Engineering (PART 1 ed., Vol. 7292). [729215] https://doi.org/10.1117/12.814915
Zonta, Daniele ; Chiappini, Andrea ; Chiasera, Alessandro ; Ferrari, Maurizio ; Pozzi, Matteo ; Battisti, Lorenzo ; Benedetti, Matteo. / Photonic crystals for monitoring fatigue phenomena in steel structures. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7292 PART 1. ed. 2009.
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Zonta, D, Chiappini, A, Chiasera, A, Ferrari, M, Pozzi, M, Battisti, L & Benedetti, M 2009, Photonic crystals for monitoring fatigue phenomena in steel structures. in Proceedings of SPIE - The International Society for Optical Engineering. PART 1 edn, vol. 7292, 729215, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, San Diego, CA, United States, 9/03/09. https://doi.org/10.1117/12.814915

Photonic crystals for monitoring fatigue phenomena in steel structures. / Zonta, Daniele; Chiappini, Andrea; Chiasera, Alessandro; Ferrari, Maurizio; Pozzi, Matteo; Battisti, Lorenzo; Benedetti, Matteo.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7292 PART 1. ed. 2009. 729215.

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

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Zonta D, Chiappini A, Chiasera A, Ferrari M, Pozzi M, Battisti L et al. Photonic crystals for monitoring fatigue phenomena in steel structures. In Proceedings of SPIE - The International Society for Optical Engineering. PART 1 ed. Vol. 7292. 2009. 729215 https://doi.org/10.1117/12.814915