Results 31 to 40 of about 4,797 (158)

Qualitative Comparison of Lock-in Thermography (LIT) and Pulse Phase Thermography (PPT) in Mid-Wave and Long-Wave Infrared for the Inspection of Paintings

Applied Sciences, 2023
When studying paintings with active infrared thermography (IRT), minimizing the temperature fluctuations and thermal shock during a measurement becomes important.
Michaël Hillen, Seppe Sels, Bart Ribbens, Simon Verspeek, Koen Janssens, Geert Van der Snickt, Gunther Steenackers   +6 more
doaj   +1 more source

Brief Review of Vibrothermography and Optical Thermography for Defect Quantification in CFRP Material

Sensors
Quantifying defects in carbon-fiber-reinforced polymer (CFRP) composites is crucial for ensuring quality control and structural integrity. Among non-destructive evaluation techniques, thermography has emerged as a promising solution for defect detection ...
Zulham Hidayat, Nicolas P. Avdelidis, Henrique Fernandes   +2 more
doaj   +1 more source

Defect Recognition and Morphology Operation in Binary Images Using Line-Scanning-Based Induction Thermography

Applied Sciences, 2022
Active infrared thermography is an attractive and highly reliable technique used for the non-destructive evaluation of test objects. In this paper, defect detection on the subsurface of the STS304 metal specimen was performed by applying the line ...
Seungju Lee, Yoonjae Chung, Wontae Kim
doaj   +1 more source

Investigation of delamination in carbon fiber reinforced plastic by means of pulse thermography, shearography and active thermography [PDF]

Proceedings of Meetings on Acoustics, 2019
Carbon fiber reinforced polymer is a material widely used nowadays in different application areas. All sectors, especially the aeronautics industry, demand components of high mechanical performance, but also with high durability and reliability, hence the need for advanced health assessing methods and to monitor the integrity of the components ...
Seresini, Tommaso, Yuan, Peilong, Grüber, Jürgen, Mayr, Günther, Burgholzer, Peter, Pecoriello, Luca, Pfeiffer, Helge, Wevers, Martine, Glorieux, Christ   +8 more
openaire   +1 more source

Comparison of Pulse Thermography (PT) and Step Heating (SH) Thermography in Non-Destructive Testing of Unidirectional GFRP Composites

Fatigue of Aircraft Structures, 2019
This paper presents two techniques of active thermography i.e. the pulsed thermography technique and the step heating technique. The aim of this article is to compare these two techniques and present the possibilities, advantages and limitations of their
Kamińska Paulina, Ziemkiewcz Jarosław, Synaszko Piotr, Dragan Krzysztof   +3 more
doaj   +1 more source

On the use of infrared thermography as NDT of aerospace materials [PDF]

INCAS Bulletin, 2010
Aeronautical structures are manufactured in a large range of materials like metallic, plastic or composite. The maintenance of aerospace structures consists in conventional inspections using different Non-Destructive Evaluation (NDE) methods in order to ...
Ştefan SOROHAN, Mircea GAVAN, Andreea BORITU, Nicolae CONSTANTIN, Viorel ANGHEL   +4 more
doaj   +1 more source

Edge-Group Sparse Principal Component Thermography for Defect Detection in an Ancient Marquetry Sample

Proceedings, 2019
Nondestructive inspection (NDI) has immensely contributed to the restoration of historic and artistic works. As one of the most common used NDI methods, active thermography is an easy-to-operate and efficient technique. Principal component thermography (
Ching-Mei Wen, Stefano Sfarra, Gianfranco Gargiulo, Yuan Yao   +3 more
doaj   +1 more source

Noninvasive Methods of Active Thermographic Investigation: Short Overview of Theoretical Foundations with an Example of Application

Energies, 2022
The field of non-destructive testing using thermography (NDT—Non-Destructive Testing and NDE—Non Destructive Evaluation) was established in the 1960s as a competitive and complementary method to ultrasonic or X-ray testing.
Sławomir Gryś, Waldemar Minkina
doaj   +1 more source

Qualitative timber structure assessment with passive IR thermography. Case study of sources of common errors

Case Studies in Construction Materials, 2022
The use of infrared thermography, a non-destructive technique for detecting structural failures or hidden defects, has become ever more common in the last 10 years.
I. Martínez, E. Martínez
doaj   +1 more source

Active Thermography with frequency modulated source

Proceedings of the 2018 International Conference on Quantitative InfraRed Thermography, 2018
Active Infrared Thermography is applied on a CFRP slab, prepared with teflon inserts of various dimensions and located at different depths, to simulate the presence of defects inside the material. The aim is that of comparing the pulse, the periodically modulated, the chirp methods of heating.
Bison P, Bortolin A, Cadelano G, Ferrarini G, Finesso L   +4 more
openaire   +2 more sources