In situ study by XRF and LDV of mural paintings in Magdalena church (Seville, Spain)

The characterization and diagnosis of mural paintings located in Santa María Magdalena Church (Seville, Spain) were studied by X-ray fluorescence (XRF) and Laser Doppler Vibrometer (LDV). Laser Doppler vibrometer (LDV) is a non-destructive and non-contact technique based on recording the answer of materials to different sound waves in order to evaluate deformations, cracks, blisters, detachments and other damages on painting walls of the chorus. XRF analyses discovered the main materials used by Lucas Valdés in the frescoes of 18^th century. The main weathering forms found in the temple after visual inspections are cracks and lacunas, However, LDV could not detect cracks at the ratio volume/distance employed. Further studies must be carried out to improve the use of this methodology in mural paintings.