scholarly journals Efficient pulse compression favourable thermal excitation scheme for non-destructive testing using infrared thermography: a numerical study

2020 ◽  
Vol 56 (19) ◽  
pp. 1003-1005 ◽  
Author(s):  
J.A. Siddiqui ◽  
S. Patil ◽  
S.S. Chouhan ◽  
S. Wuriti ◽  
V. Arora ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Pulse Compression ◽  
Numerical Study ◽  
Thermal Excitation ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Excitation Scheme ◽  
Non Destructive

scholarly journals Latest Advances in Common Signal Processing of Pulsed Thermography for Enhanced Detectability: A Review

2021 ◽  
Vol 11 (24) ◽  
pp. 12168
Author(s):  
Yoonjae Chung ◽  
Seungju Lee ◽  
Wontae Kim
Keyword(s):  
Signal Processing ◽  
Infrared Thermography ◽  
Heat Diffusion ◽  
Thermal Excitation ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Pulsed Thermography ◽  
Processing Techniques ◽  
Non Destructive ◽  
Signal Processing Techniques

Non-destructive testing (NDT) is a broad group of testing and analysis techniques used in science and industry to evaluate the properties of a material, structure, or system for characteristic defects and discontinuities without causing damage. Recently, infrared thermography is one of the most promising technologies as it can inspect a large area quickly using a non-contact and non-destructive method. Moreover, thermography testing has proved to be a valuable approach for non-destructive testing and evaluation of structural stability of materials. Pulsed thermography is one of the active thermography technologies that utilizes external energy heating. However, due to the non-uniform heating, lateral heat diffusion, environmental noise, and limited parameters of the thermal imaging system, there are some difficulties in detecting and characterizing defects. In order to improve this limitation, various signal processing techniques have been developed through many previous studies. This review presents the latest advances and exhaustive summary of representative signal processing techniques used in pulsed thermography according to physical principles and thermal excitation sources. First, the basic concept of infrared thermography non-destructive testing is introduced. Next, the principle of conventional pulsed thermography and signal processing technologies for non-destructive testing are reviewed. Then, we review advances and recent advances in each signal processing. Finally, the latest research trends are reviewed.

scholarly journals Development and Application of Infrared Thermography Non-Destructive Testing Techniques

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3851
Author(s):  
Zhi Qu ◽  
Peng Jiang ◽  
Weixu Zhang
Keyword(s):  
Nondestructive Testing ◽  
Infrared Thermography ◽  
Infrared Image ◽  
Development Trend ◽  
Thermal Excitation ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Infrared Image Processing ◽  
Testing Techniques ◽  
Non Destructive

Effective testing of defects in various materials is an important guarantee to ensure its safety performance. Compared with traditional non-destructive testing (NDT) methods, infrared thermography is a new NDT technique which has developed rapidly in recent years. Its core technologies include thermal excitation and infrared image processing. In this paper, several main infrared thermography nondestructive testing techniques are reviewed. Through the analysis and comparison of the detection principle, technical characteristics and data processing methods of these testing methods, the development of the infrared thermography nondestructive testing technique is presented. Moreover, the application and development trend are summarized.

scholarly journals Improvement of the Non-Destructive Testing of Heritage Mural Paintings Using Stimulated Infrared Thermography and Frequency Image Processing

2019 ◽  
Vol 5 (9) ◽  
pp. 72
Author(s):  
Kamel Mouhoubi ◽  
Vincent Detalle ◽  
Jean-Marc Vallet ◽  
Jean-Luc Bodnar
Keyword(s):  
Infrared Thermography ◽  
Cultural Property ◽  
Wall Paintings ◽  
Non Destructive Testing ◽  
Property A ◽  
Destructive Testing ◽  
Mural Paintings ◽  
Works Of Art ◽  
Optical Effects ◽  
Non Destructive

Within the framework of conservation and assistance for the restoration of cultural property, a method of analysis assistance has been developed to help in the restoration of cultural heritage. Several collaborations have already demonstrated the possibility of defects detection (delamination, salts) in murals paintings using stimulated infrared thermography. One of the difficulties encountered with infrared thermography applied to the analysis of works of art is the remanence of the pictorial layer. This difficulty can sometimes induce detection artifacts and false positives. A method of thermograms post-processing called PPT (pulse phase thermography) is described. The possibilities offered by the PPT in terms of reducing the optical effects associated with the pictorial layer are highlighted first with a simulation, and then through experiments. This approach can significantly improve the study of painted works of art such as wall paintings.

scholarly journals Erratum to: Contribution to the improvement of heritage mural painting non-destructive testing by stimulated infrared thermography

2013 ◽  
Vol 64 (1) ◽  
pp. 11003 ◽  
Author(s):  
Jean-Luc Bodnar ◽  
Kamel Mouhoubi ◽  
Luigi Di Pallo ◽  
Vincent Detalle ◽  
Jean-Marc Vallet ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Mural Painting ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

scholarly journals Porosity and Inclusion Detection in CFRP by Infrared Thermography

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
C. Toscano ◽  
C. Meola ◽  
M. C. Iorio ◽  
G. M. Carlomagno
Keyword(s):  
Infrared Thermography ◽  
Production Costs ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Evaluation Methodologies ◽  
Slag Inclusions ◽  
Aeronautical Industry ◽  
Testing Techniques ◽  
Lock In ◽  
Non Destructive

The ever wide use of composite materials in the aeronautical industry has evidenced the need for development of ever more effective nondestructive evaluation methodologies in order to reduce rejected parts and to optimize production costs. Infrared thermography has been recently enclosed amongst the standardized non destructive testing techniques, but its usefulness needs still complete assessment since it can be employed in several different arrangements and for many purposes. In this work, the possibility to detect slag inclusions and porosity is analyzed with both lock-in themography and pulse thermography in the transmission mode. To this end, carbon-fiber-peinforced polymers different specimens are specifically fabricated of several different stacking sequences and with embedded slag inclusions and porosity percentages. As main results, both of the techniques are found definitely able to reveal the presence of the defects above mentioned. Moreover, these techniques could be considered complementary in order to better characterize the nature of the detected defects.

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