RT Journal Article T1 Spectral damage model for lighted museum paintings: Oil, acrylic and gouache A1 Mayorga Pinilla, Santiago A1 Vázquez Moliní, Daniel A1 Álvarez Fernández-Balbuena, Antonio A1 Muro, Carmen A1 Muñóz, Javier AB A spectral aging test was developed to estimate the photochemical damage of oil, acrylic and gouache paints exposed to permanent lighting. The paints were irradiated at seven different wavelengths in the optical range to control and evaluate their spectral behaviour. To reach this objective, boxes with isolated aging cells were made. In each of box, one LED of a different wavelength and one photodiode were installed. Inside the boxes, the temperature of an exhibit area was recreated through a thermocouple sensor that controlled the temperature using a fan. The heat produced by the LED was dissipated by a thermal radiator. Moreover, to evaluate the exposure time dependence of the irradiation level, the test was performed using two different irradiation levels in ten exposure series. After each series, the spectral reflectance was measured, and the data collected for each paint and wavelength were used to develop a model of damage produced by the interaction between the spectral radiant exposure and the paint. PB Elsevier SN 1296-2074 YR 2016 FD 2016-06 LK https://hdl.handle.net/20.500.14352/24508 UL https://hdl.handle.net/20.500.14352/24508 LA eng NO Versión preprint. Received 4 January 2016. Accepted 9 May 2016.Avalaible online 1 june 2016. Corrected proof. DS Docta Complutense RD 4 abr 2025