Abstract
A novel method to measure strain without mediation of stress has been developed to assess relative displacements in art objects responding to environmental fluctuations. The method uses a chip with a variable resistor composed of a Giant Magnetic Resistance (GMR) material. In a case study, the dimensional changes of wooden test vehicles subjected to sudden humidity changes at constant temperature inside a controlled environmental chamber were measured. Furthermore, an optimized sensor deployment and converging algorithm to increase the accuracy of the measurements was developed and applied.
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Acknowledgements
The authors will like to thank Michael Gaynes for technical assistance with the temperature–humidity chamber, and also Marco Leona, Paolo Dionisi Vici, Masahiko Tsukada and Lucretia Kargere for useful discussions.
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Sloan, J., Klein, L.J., Bermudez Rodriguez, S.A. et al. Concealable strain sensing method for art preservation. Appl. Phys. A 115, 829–836 (2014). https://doi.org/10.1007/s00339-013-7871-4
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DOI: https://doi.org/10.1007/s00339-013-7871-4
Keywords
- Lateral Displacement
- Sensor Output
- Environmental Fluctuation
- Conservation Scientist
- Wooden Object