Advanced signal processing applied to thermographic inspection of petrochemical furnaces

Fernando Lopez; Alexandrine Huot

doi:10.1117/12.2519039

3 May 2019 Advanced signal processing applied to thermographic inspection of petrochemical furnaces

Fernando Lopez, Alexandrine Huot

Proceedings Volume 11004, Thermosense: Thermal Infrared Applications XLI; 1100407 (2019) https://doi.org/10.1117/12.2519039
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

This paper presents an inspection methodology for high-temperature furnace tubes by IR thermography based on the acquisition and analysis over the time of a sequence of thermographic images. With this aim, a set of IR data has been collected during a furnace inspection (operated in steady-state condition) using a high-speed IR camera manufactured by TELOPS (3.0 - 5.4 μm with filter BBP-3670-4020 nm, 320×256 pixels, 3100 Hz). The stacks of IR images have been processed using multivariate statistical analysis – more specifically, partial least squares regression (PLSR), which decomposes the thermographic data sequence into a set of latent variables. Since each latent variable is orthogonal to each other and is characterized by its variance, it is possible to separate the noise affecting the IR signatures through a careful analysis of each component. A qualitative comparison between the processed and non-processed images will be made in order to evaluate the effectiveness of the proposed inspection method.

Conference Presentation

Citation Download Citation

Fernando Lopez and Alexandrine Huot "Advanced signal processing applied to thermographic inspection of petrochemical furnaces", Proc. SPIE 11004, Thermosense: Thermal Infrared Applications XLI, 1100407 (3 May 2019); https://doi.org/10.1117/12.2519039

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