Article
Instruments & Instrumentation
Ivan Garrido, Eva Barreira, Ricardo M. S. F. Almeida, Susana Laguela
Summary: Active infrared thermography has been proposed for detecting defect areas in building facade ceramic tiling, with segmentation and automation in thermal image processing. Good results were obtained in experimental tests, and future research will focus on fine-tuning the methodology for application in real case studies.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Computer Science, Information Systems
Omar Trejo-Chavez, Juan P. Amezquita-Sanchez, Jose R. Huerta-Rosales, Luis A. Morales-Hernandez, Irving A. Cruz-Albarran, Martin Valtierra-Rodriguez
Summary: This paper proposes a method based on infrared thermography and convolutional neural networks to differentiate between a healthy knee and an injured knee. By processing images and designing a CNN, the proposed method can automatically identify a patient with an injured knee with high accuracy. The method has the advantages of being fast, low-cost, harmless, and non-invasive.
Review
Construction & Building Technology
Mahesh Yumnam, Hina Gupta, Debdutta Ghosh, Jayaprakash Jaganathan
Summary: Fiber reinforced polymer composites play a crucial role in reinforced concrete structures, but their external reinforcements are prone to debonding issues which require early detection and characterization. Infrared thermography has emerged as a fast-imaging technique for identifying and characterizing surface and near-surface defects, aided by the development of new thermography and post-processing techniques. Sophisticated thermography techniques and novel post-processing approaches have been explored for defect characterization in FRP bonded concrete, but there is still potential for further research in this area to improve defect detection, especially for near-surface flaws.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Thermodynamics
A. O. Chulkov, S. Sfarra, N. Saeed, J. Peeters, C. Ibarra-Castanedo, G. Gargiulo, G. Steenackers, X. P. V. Maldague, M. A. Omar, V. Vavilov
Summary: Marquetry method plays a significant role in Italian culture, as evidenced by the large number of artworks created in this way. Active thermography, along with advanced signal processing algorithms, was used to inspect marquetry samples with natural defects, while dynamic thermal tomography was employed as an advanced technique for nondestructive testing and defect quantification. The use of established techniques combined with DTT proved successful in identifying and confirming the positions of main defects in the samples.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Optics
Pengfei Zhu, Dan Wu, Lei Qian
Summary: This study proposes a low-cost and easy-to-implement method using first-order forward difference and infrared thermal signal reconstruction to improve image signal-to-noise ratio and detect deep defects. Experimental results show the method's effectiveness and accuracy in detecting defects in metallic materials.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Optics
Haoran Tang, Jingbiao Wei, Zunning Zhou
Summary: In a smoke environment, target recognition is hindered by the transmittance of smoke. This study proposes a numerical method to calculate infrared smoke transmittance and presents a solution through a test example. The new method eliminates anomalies and provides accurate solutions for engineering applications.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Environmental Sciences
Antonio Cosentino, Gian Marco Marmoni, Matteo Fiorucci, Paolo Mazzanti, Gabriele Scarascia Mugnozza, Carlo Esposito
Summary: This study explores the innovative use of digital image processing techniques to analyze the triggering conditions of shallow landslides. The combination of optical and infrared thermographic imaging is applied to laboratory-scale slopes, and change detection and digital image correlation analysis are conducted. The results show the reliability of the displacement time-series obtained through this approach, with the technique also able to detect anomaly signals before landslide occurrence.
Article
Energy & Fuels
Renan de Oliveira Alves Takeuchi, Leandra Ulbricht, Fabiano Gustavo Silveira Magrin, Francisco Itamarati Secolo Ganacim, Leonardo Gobel Fernandes, Eduardo Felix Ribeiro Romaneli, Jair Urbanetz Junior
Summary: This article presents the improvement of four different techniques for segmenting thermographic images of electrical energy substation equipment. The results showed that threshold-based methods were fast but had low accuracy and precision, while clustering-based methods were slower but had higher accuracy and precision. The Fuzzy C-means method had the highest values of specificity, accuracy, and precision among the methods under analysis, followed by the Cluster K-means method.
Article
Construction & Building Technology
Miao Hong, Dong Lei, Feng Hu, Zhijuan Chen
Summary: Passive infrared thermography (IRT) and digital image correlation (DIC) techniques are used to study the temperature and deformation fields containing defects. The results show that infrared thermal imaging technology can accurately identify and distinguish surface and subsurface void defects. The majority of the large positive strain in the mortar is concentrated in the banded area radiating from the edge of the aggregate to the boundary, the connection between the aggregates, and the annular area surrounding the aggregate, which can develop cracks. The geometric factors of voids, including radius, depth, and thickness, influence the temperature difference, and there is a significant power function relationship between thickness x depth and temperature difference.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Biology
Mireia Munoz-Alcami, Jose Ignacio Priego-Quesada, Marc Gimeno Raga, Alvaro Duran Lozano, Marina Gil-Calvo
Summary: This study examines changes in anterior thigh skin temperature in response to a cold stress test after a strength exercise fatiguing protocol. The results indicate that fatigue from strength exercise results in lower skin temperature and faster thermal increase after a cold stress test.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Optics
Yanling Chen, Lianglun Cheng, Heng Wu, Fei Mo, Ziyang Chen
Summary: The proposed method utilizes an iterative differential thermal information filter to fuse infrared and visible images, resulting in a fusion image with prominent thermal targets from the infrared image and detailed information from the visible image. Experimental results demonstrate the advantages and effectiveness of the method compared to deep learning and non deep learning-based methods.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Engineering, Biomedical
Michael Iorga, Matthew C. Tate, Todd B. Parrish
Summary: This study developed a fast and robust motion estimation and correction technique as a preprocessing step for brain surface thermography recordings. The technique approximates the deformation field associated with motion using a grid of two-dimensional bilinear splines and constrains motion to biomechanically feasible solutions. The proposed method performed well compared to other techniques tested.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2023)
Article
Biophysics
Stephan Dahlmanns, Stefanie Reich-Schupke, Franziska Schollemann, Markus Stuecker, Steffen Leonhardt, Daniel Teichmann
Summary: This research utilizes infrared thermography to analyze temperature patterns in the lower legs of patients, identifying distinct local skin temperature increases in different forms of CVD. Infrared thermography may become a complementary tool for the early detection of CVD, aiding in the objective classification of the disease.
PHYSIOLOGICAL MEASUREMENT
(2021)
Article
Environmental Sciences
Jairo Acuna Paz Y. Mino, Nicolas Duport, Benoit Beckers
Summary: The proposed method offers a more accurate assessment of urban surface temperatures by rectifying thermograms, especially when applied at human height.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Engineering, Multidisciplinary
Siavash Doshvarpassand, Xiangyu Wang, Xianzhong Zhao
Summary: Corrosion is a destructive phenomenon affecting almost all metals, and active infrared thermography is an online and non-intrusive method of non-destructive testing that has shown capabilities of detecting sub-surface metal loss. However, challenges such as thermal reflections, non-uniform stimulation, and lack of a priori knowledge hinder the effective observation of sub-surface defects.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Article
Materials Science, Characterization & Testing
Janet F. C. Sham, Wallace W. L. Lai
NDT & E INTERNATIONAL
(2016)
Article
Materials Science, Characterization & Testing
Wallace Wai-Lok Lai, Thomas Kind, Janet Fung-Chu Sham, Herbert Wiggenhauser
NDT & E INTERNATIONAL
(2016)
Article
Construction & Building Technology
Wallace W. L. Lai, Ray K. W. Chang, Janet F. C. Sham, K. Pang
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2016)
Article
Construction & Building Technology
Dong Ouyang, Weiting Xu, Tommy Y. Lo, Janet F. C. Sham
CONSTRUCTION AND BUILDING MATERIALS
(2011)
Article
Construction & Building Technology
Janet F. C. Sham, Tommy Y. Lo, Shazim Ali Memon
ENERGY AND BUILDINGS
(2012)
Article
Construction & Building Technology
Janet F. C. Sham, Shazim Ali Memon, Tommy, Y. Lo
ENERGY AND BUILDINGS
(2013)
Article
Environmental Sciences
Janet Fung Chu Sham, Tommy Yiu Lo, Wei Ting Xu
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2011)
Article
Instruments & Instrumentation
F. C. Sham, Y. H. Huang, L. Liu, Y. S. Chen, Y. Y. Hung, T. Y. Lo
INFRARED PHYSICS & TECHNOLOGY
(2010)
Article
Instruments & Instrumentation
F. C. Sham, W. T. Xu, T. Lo
Article
Construction & Building Technology
Mei-yung Leung, Yee-shan Chan, Alice Chong, Janet Fung-Chu Sham
JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
(2008)
Article
Optics
Y. H. Huang, L. Liu, F. C. Sham, Y. S. Chan, S. P. Ng
Article
Construction & Building Technology
Wallace W. L. Lai, Missoni Leong-Ying Ho, Ray K. W. Chang, Janet F. C. Sham, Chi-Sun Poon
CONSTRUCTION AND BUILDING MATERIALS
(2017)
Article
Environmental Sciences
H. Z. Cui, F. C. Sham, T. Y. Lo, H. T. Lum
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2011)
Article
Materials Science, Characterization & Testing
F. C. Sham, Y. Lo, Y. S. Chen, Y. Y. Hung
MATERIALS EVALUATION
(2009)
