Browse > Article

The Study of Infrared Thermography of a Mild Steel for Nondestructive Evaluation  

Han, Jeong-Seb (Dept. of Materials Science and Engineering, DongA Univ.)
Park, Jin-Hwan (Devision of Chemical Engineering, PuKyung Univ.)
Publication Information
Journal of Ocean Engineering and Technology / v.22, no.2, 2008 , pp. 72-77 More about this Journal
Abstract
The application of infrared thermography for detecting defects under the surface of a material was studied. Defects in a specimen were made by back-drilled circular holes. To get alarge temperature difference at the surface, a halogen lamp was used for surface heating. We confirmed that the defect location had a good relationship with the maximum temperature difference. The sizes of the defects could be calculated by means of the FWHM. The value of the FWHM of a temperature difference decreased with time. Therefore in an extremely short time after the heating, the true defect size could be measured.
Keywords
Infrared thermograph; Defect size; Non-destructive testing; The full with at half of the maximum contrast; Mild steel;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ibarra-Castanedo, C., Gonzalez, D., Klein, M., Pilla, M., Vallerand, S. and Maldague, XPV. (2004). 'Infrared image processing and data analysis', Infrared Phys. Technol., Vol 46, pp 33-40
2 Han, J.S. and Park, J.H. (2006). 'Detection of corrosion steel under an organic coating by infrared photography', Corrosion Sicence, Vol 46, pp 787-793
3 Maldague, XPV. (2000). Application of infrared thermography on nondestructive evaluation, Rastogi PK, Inaudi, D., editors, Trends in optical nondestructive teting and inspection, New York, Elsevier Science
4 Maldague, XPV. (2001). Theory and practice of infrared technology for nondestructive testing, New York, Wiley
5 Saintey, M.B. and Almond, D.P. (1995). 'Defect sizing by transient thermography II: a numerical treatment', J. Phys. D. Appl. Phys., Vol 28, pp 2546
6 정란, 백인관 (2004). 적외선 열화상 데이터를 이용한 비파괴 방식의 철근 부식 정도 측정 방법, 대한민국 특허, 공개번호 10-2004-0041243
7 김성종, 김도형, 이명훈, 김기준, 문경만 (2000). '해양환경 변화가 알루미늄합금 희생양극의 효율에 미치는 영향에 관한 연구', 한국해양공학회지, 제14권, 제2호, pp 106-111
8 Saintey, M.B. and Almond, D.P. (1997). 'An artificial neural network interpreter for transient thermography image data', NDT&E Int., Vol 30, No 5, pp 291-295   DOI   ScienceOn