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Weatherability improvement of strain imaging sheet to use in real field for infrastructure inspection technology
Author(s): Hiroshi Fudouzi; Koichi Tsuchiya ; Shin‑ichi Todoroki ; Tsuyoshi Hyakutake ; Hiroyuki Nitta ; Yoshikazu Tanaka ; Takao Ohya; Michiharu Arifuku
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Paper Abstract

We have been developing smart photonic coating for structural materials to visualize strain mapping on steel or aluminum and to detect cracks on concrete. In the technology, strain imaging sheet made of colloidal photonic crystal film coated on a polyethylene terephthalate sheet. The strain imaging sheets change structural color by mechanical deformation. Now we have been testing smart photonic coating for real concreate bridges One of the key issues is the durability of the sheet for long-term use at the outfield site. In outdoor exposure test and in laboratory accelerated exposure test, polystyrene particles in the colloidal photonic crystal film were damaged and lost the structural color. To protect the deteriorating, top coat layer containing ultraviolet absorber was effective to reduce the damage of the colloidal photonic crystal film.

Paper Details

Date Published: 27 March 2019
PDF: 7 pages
Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 1097016 (27 March 2019); doi: 10.1117/12.2513036
Show Author Affiliations
Hiroshi Fudouzi, National Institute for Materials Science (Japan)
Koichi Tsuchiya , National Institute for Materials Science (Japan)
Shin‑ichi Todoroki , National Institute for Materials Science (Japan)
Tsuyoshi Hyakutake , Public Works Research Institute (Japan)
Hiroyuki Nitta , Public Works Research Institute (Japan)
Yoshikazu Tanaka , Hiroshima Univ. (Japan)
Takao Ohya, National Institute for Materials Science (Japan)
Technical Research Institute (Japan)
Michiharu Arifuku, National Institute for Materials Science (Japan)
Nippon Kayaku Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 10970:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
Jerome P. Lynch; Haiying Huang; Hoon Sohn; Kon-Well Wang, Editor(s)

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