Journal
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
Volume 212, Issue 10, Pages 2239-2245Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201532114
Keywords
composites; electrical impedance tomography; paint; polymers; temperature sensors; thermal imaging
Funding
- NASA Space Technology Research Fellowship (NSTRF) program [NNX13AL45H]
- National Science Foundation's National Robotics Initiative [IIS-1317913]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1317913] Funding Source: National Science Foundation
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Sensing temperature distributions over an area is of interest for many applications, and it is currently performed using sensors that are attached to the structure. In this work a conductive smart paint, made from latex and exfoliated graphite, is introduced for temperature sensing. This provides, as an alternative to manual fixation, the ability to integrate sensors during fabrication because the approach is amenable to additive manufacturing technologies such as 3D printing. We demonstrate that calibration of the spray-coatable polymer/carbon composite thin film sensors allows accurate temperature measurement over an area. We further demonstrate continuous, distributed temperature sensing by employing electrical impedance tomography to reconstruct a thermal image from measurements at the perimeter of the sensing region.
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