Browse > Article
http://dx.doi.org/10.5762/KAIS.2018.19.3.83

A Study on Temperature Characteristics of Various Depth using Infrared Thermography  

Jung, Ju-Yeong (Korea Railroad Research Institute)
Yoon, Hyuk-Jin (Korea Railroad Research Institute)
Cho, Hyun-Woo (Division of Robotics and virtual engineering, University of Science & Technology)
Yang, Hui-Seung (Naval Architecture & Ocean Engineering, INHA University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.3, 2018 , pp. 83-89 More about this Journal
Abstract
The thermal characteristics of concrete specimens were analyzed using cement paste specimens with artificial cracks. In order to understand the temperature characteristics of the specimen depending on the crack depth, the specimen was heated and the minimum temperatures of the specimens at which cracks appear were investigated according to the crack depth. It was confirmed that the surface temperature distribution of the specimen varies depending on whether the specimen is cracked or not, because of the single and multiple reflections of the incident energy. Furthermore, as the temperature distribution of the specimen reaches a steady state, the temperature data tends to decrease with the crack depth. Through the observation of the normalized temperatures, it was found that the temperature of the specimens obtained from this experiment reached a steady state after 10 minutes. At this time, the standard deviation of the normalized temperature is around 0.01 or less, and the temperature decreases linearly with increasing crack depth. This result is considered to be closely related to the area where multiple reflections occur in the cracked region. If the correlation between the crack region and the incident energy is analyzed for various specimens, it can be applied to the diffuse reflection of the light.
Keywords
Active method; Crack; Crack depth; Infrared; Thermography; Temperature characteristics;
Citations & Related Records
연도 인용수 순위
  • Reference
1 F. C. Sham, N. Chen, and L. Long, "Surface crack detection by flash thermography on concrete surface," Insight-Non-Destructive Testing and Condition Monitoring, pp. 240-243, May, 2008. DOI: https://doi.org/10.1784/insi.2008.50.5.240
2 B. B. Kang, Y. H. Cho, K. Y. Choe, "Abnormal Diagnosis Technology Using Infrared Deterioration Method," Railway journal, pp. 51-56, December, 2009.
3 S. Bagavathiappan, B. B. Lahiri, T. Saravanan, J. Philip, and T. Jayakumar, "Infrared thermography for condition monitoring-a review," Infrared Physics & Technology, pp. 35-55, march, 2013. DOI: https://doi.org/10.1016/j.infrared.2013.03.006
4 S. Ranjit, K. S. Kang, and W. T. Kim, "Investigation of lock-in infrared thermography for evaluation of subsurface defects size and depth," International Journal of Precision Engineering and Manufacturing, pp. 2255-2264, October, 2015. DOI: https://doi.org/10.1007/s12541-015-0290-z
5 M. Basheer, P. Ravindran, and K. Balasubramaniam, "A thermographic approach for surface crack depth evaluation through 3D finite element modeling," In AIP Conference Proceedings, pp. 1782-1789, march, 2015. DOI: https://doi.org/10.1063/1.4914802
6 J. Qiu, C. Pei, H. Liu, and Z. Chen, "Quantitative evaluation of surface crack depth with laser spot thermography," International Journal of Fatigue, pp. 80-85, February, 2017. DOI: https://doi.org/10.1016/j.ijfatigue.2017.02.027
7 W. J. Parker, R. J. Jenkins, C. P. Butler, and G. L. Abbott, "Flash method of determining thermal diffusivity, heat capacity, and thermal conductivity," Journal of applied physics, pp. 1679-1684, 1961. DOI: https://doi.org/10.1063/1.1728417