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Steel and Composite Structures Volume 53, Number 5, December 10 2024 (Special Issue) pages 523-533 DOI: https://doi.org/10.12989/scs.2024.53.5.523 |
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Evaluation of plastic deformation for steel coupons using thermography |
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Arum Jang, Soo-Min Baik, Donghwi Jung, Yong-Hoon Byun and Young K. Ju
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| Abstract | ||
| The construction industry is undergoing significant technological changes with high-tech advances such as infrared thermography and non-destructive testing (NDT). Research is focusing on the use of thermography to measure thermal changes during plastic deformation to improve safety and streamline inspection processes. A recent study has confirmed that thermal data can detect plastic deformation. The theory is that thermal energy is generated during the deformation of a steel component when it is loaded. Building upon this theory, several studies are working on development of a thermal camera system to measure thermal changes during plastic deformation. The objective of this study was to estimate the degree of deformation of steel coupons based on thermal data. A tensile test was conducted using a thermography to measure thermal changes resulting from plastic deformation. Passive methods were used in the test and the results were compared with thermocouple data and thermal data. Additional parameters such as temperature, humidity, and illuminance, were collected to increase objectivity and reliability. The results of the study confirmed that thermal data can indeed confirm plastic deformation. | ||
| Key Words | ||
| infrared thermography technique; NDT; safety inspection; tensile test; thermal camera | ||
| Address | ||
| Arum Jang:School of Civil, Environmental, and Architectural Engineering, Korea University,145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea Soo-Min Baik:School of Civil, Environmental, and Architectural Engineering, Korea University,145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea Donghwi Jung:School of Civil, Environmental, and Architectural Engineering, Korea University,145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea Yong-Hoon Byun:School of Agricultural Civil & Bio-Industrial Engineering, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea Young K. Ju: School of Civil, Environmental, and Architectural Engineering, Korea University,145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea | ||