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Active crack indicator with mechanoluminescent sensing technique: Detection of crack propagation on building

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4 Author(s)
Terasaki, N. ; Meas. Solution Res. Center, Nat. Inst., of Adv. Ind. Sci. & Technol. (AIST), Saga, Japan ; Chenshu Li ; Lin Zhang ; Chao-Nan Xu

Recently, there have been innovative mechanoluminescent (ML) nano- and microparticles made available, each of which repeatedly emits light in response to small applied stresses such as deformation, friction, or impact. When dispersedly coated onto a structure, each particle acts as a sensitive mechanical sensor, while the two-dimensional emission pattern of the whole assembly reflects the dynamical stress distribution inside the structure and the mechanical information around the crack and defect. This stress visualization technique, which provides a novel way of diagnosing the structural health of a building, is advantageous over the conventional point-by-point measurement method. Recently, we have successfully exploited the remarkable advantage of the ML sensing technique by applying it onsite to a building as a non-destructive evaluation method. In this paper, we present the notable results for the visualization of active cracks on a building and the detection of crack propagation.

Published in:

Sensors Applications Symposium (SAS), 2012 IEEE

Date of Conference:

7-9 Feb. 2012