Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Development of accelerated ageing regime

The accelerated ageing regime was carried out to produce artificially light-aged model tapestry samples for the development of novel experimental techniques by all project partners, and also to determine, under standardized conditions, the effect of historic manufacturing techniques and materials on subsequent vulnerability to environmental-induced degradation. Light ageing of model samples was carried out according to the conditions specified in the international standard BS EN ISO 105-B02, using conditions which are known to damage fibres. The precise length of accelerated ageing required for optimum utility was determined though trials between HRP and partner BBK. The accelerated ageing apparatus chosen for this work was a Xenotest 150S (Heraeus Inc.), because it incorporates a Xenon-arc bulb, which produces a light of extreme illuminance, but with a continuous spectral distribution which mimics, as closely as possible, that of sunlight through window-glass. This was determined by partners to be the most suitable likeness for the illumination conditions under which historic tapestries have been displayed. The relative humidity (RH) and temperature conditions were maintained at 65% and 20?C respectively, as required by the standardised method. The accelerated aged models have proven to be an invaluable resource for the advancement of the scientific analysis techniques.

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Historic Royal Palaces
Apt. 37, Hampton Court Palace
KT8 9AU Surrey
United Kingdom
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