지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This paper describes an analytic method for infrared thermography to detect surface cracks in thin plates. Traditional thermographic method uses the spatial contrast of a thermal field, which is often corrupted by noise in the experiment induced mainly by emissivity variations of target surfaces. This study developed a robust analytic approach to crack detection for thermography using the holomorphic function of a temperature field in thin plate under steady-state thermal conditions. The holomorphic function of a simple temperature field was derived for 2-D heat flow in the plate from Cauchy-Riemann conditions, and applied to define a contour integral that varies depending on the existence and strength of singularity in the domain of integration. It was found that the contour integral at each point of thermal image reduced the noise and temperature variation due to heat conduction, so that it provided a clearer image of the singularity such as cracks.
목차
Abstract
1. Introduction
2. Heat Equation in Plate
3. Numerical Simulation for the Detection of Artificial Crack
4. Conclusions
References
참고문헌 (9)
참고문헌 신청
T. Sakagami / 2002 / Development ofa new non-destructive testing technique forquantitative evaluations of delaminationdefects in concrete structures based onphase delay measurement using lock-inthermography / Infrared Physics & Technology 43:211~218
T. Sakagami / 2001 / Developmentof a new crack identification techniquebased on near-tip singular electrothermalfield measured by lock-in infrared thermography / JSME International Journal,Series A 44(4):528~534
I. Z. Abidin / 2010 / Quantitative evaluationof angular defects by pulsed eddy currentthermography / NDT & E International 43(7):537~546
G. Walle / 2006 / Thermographiccrack detection in ferritic steelcomponents using inductive heating / Proc.of ECNDT, Tu.4.8.5
G. Zenzinger / 2007 / Thermographic crackdetection by eddy current excitation / Nondestructive Testing and Evaluation 22:101~111
T. Sakagami / 2001 / Developmentof a new crack identification techniquebased on near-tip singular electrothermalfield measured by lock-in infrared thermography / JSME International Journal,Series A 44(4):528~534
I. Z. Abidin / 2010 / Quantitative evaluationof angular defects by pulsed eddy currentthermography / NDT & E International 43(7):537~546
G. Walle / 2006 / Thermographiccrack detection in ferritic steelcomponents using inductive heating / Proc.of ECNDT, Tu.4.8.5
G. Zenzinger / 2007 / Thermographic crackdetection by eddy current excitation / Nondestructive Testing and Evaluation 22:101~111
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UCI(KEPA) : I410-ECN-0101-2014-500-003269972