Development of a Low-Cost Airborne Ultrasound Sensor for the Detection of Brick Joints behind a Wall Painting

作者：Garcia Diego Fernando Juan^*; Maria Bravo Jose; Perez Miralles Juan; Estrada Hector; Fernandez Navajas Angel

来源：Sensors, 2012, 12(2): 1299-1311.

DOI：10.3390/s120201299

• non destructive test
• ultrasound
• wall painting
• brick joints

Non-destructive methods are of great interest for the analysis of cultural heritage. Among the different possible techniques, this paper presents a low cost prototype based on the emission and reception of airborne ultrasound without direct contact with the test specimen. We successfully performed a method test for the detection of brick joints under a XVth century Renaissance fresco of the Metropolitan Cathedral of the city of Valencia (Spain). Both laboratory and in situ results are in agreement. Using this prototype system, an early moisture detection system has been installed in the dome that supports the fresco. The result is encouraging and opens interesting prospects for future research.

• 出版日期2012-2