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Title: Stress measurement in East Asian lacquer thin films owing to changes in relative humidity using phase-shifting interferometry
Authors: Elmahdy, Adel E.
Ruiz, Pablo D.
Wildman, Ricky D.
Huntley, Jonathan M.
Rivers, S.
Keywords: East Asian lacquer film
Urushi
UV ageing
Phase-shifting interferometry
Coating-substrate bending
Stress
Issue Date: 2011
Publisher: © The Royal Society
Citation: ELMAHDY, A.E. ... et al, 2011. Stress measurement in East Asian lacquer thin films owing to changes in relative humidity using phase-shifting interferometry. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 467 (2129), pp. 1329 - 1347.
Abstract: In this paper, we address the behaviour of lacquer coatings similar to that found on the Mazarin Chest, an important Japanese lacquerware artefact currently held by the Victoria and Albert Museum (V&A) in London. The response of Japanese lacquer (urushi) to changes in environmental conditions was investigated by examining the deflection of a glass substrate coated with a thin film of urushi subjected to changes of humidity. This deflection, measured using phase-shifting interferometry, was then used to determine the two in-plane hygral stress components. Results were compared for two sample conditioning regimes—subjected to intense UV ageing and no ageing—each at a range of relative humidity (RH) steps. The changes in humidity were found to cause rapid stress changes in the lacquers, which then relax over much longer time scales. A simple one-dimensional model of the moisture transport and the stress development is shown to be effective in describing the response of the material to changes in environmental RH.
Description: This article was published in the journal, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences [© The Royal Society]. The definitive version is available at: http://dx.doi.org/10.1098/rspa.2010.0414
Version: Accepted for publication
DOI: 10.1098/rspa.2010.0414
URI: https://dspace.lboro.ac.uk/2134/13319
Publisher Link: http://dx.doi.org/10.1098/rspa.2010.0414
ISSN: 1364-5021
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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