Active thermography non-destructive inspection of a damaged artwork with a complex shape

Masashi Ishikawa; Stefano Sfarra; Panagiotis Theodorakeas

doi:10.1117/12.3013386

7 June 2024 Active thermography non-destructive inspection of a damaged artwork with a complex shape

Masashi Ishikawa, Stefano Sfarra, Panagiotis Theodorakeas

Proceedings Volume 13047, Thermosense: Thermal Infrared Applications XLVI; 1304717 (2024) https://doi.org/10.1117/12.3013386
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Conference Poster

Abstract

This study reports the results of active thermography non-destructive inspection of an ancient artwork. The artwork was decorated with metal ornaments, realized by hands from specialized craftsmen. However, it was seriously damaged by a catastrophic event based on repeated vibrations. The condition of the ancient artwork was evaluated from thermal data recorded during and after a long pulse heating. In this study, the evaluations were performed using not only the raw thermograms but also the results of three post-processing algorithms, namely: pulsed phase thermography (PPT), thermographic signal reconstruction (TSR), and principal component thermography (PCT). Comparison of the results based on signal-to-noise ratio (SNR) calculations showed that TSR was the most effective technique for detecting defects, and PCT was also effective for the detection of crack-shaped defects. In contrast, PPT seems not suitable for inspection of objects with a complex shape.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Masashi Ishikawa, Stefano Sfarra, and Panagiotis Theodorakeas "Active thermography non-destructive inspection of a damaged artwork with a complex shape", Proc. SPIE 13047, Thermosense: Thermal Infrared Applications XLVI, 1304717 (7 June 2024); https://doi.org/10.1117/12.3013386

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available