Reconstruction of size and depth of simulated defects in austenitic steel plate using pulsed infrared thermography |
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| Authors: | Olga Wysocka-Fotek Wiera Oliferuk Michał Maj |
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| Institution: | 1. Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106 Warsaw, Poland;2. Bialystok University of Technology, Wiejska 45, 15-351 Bia?ystok, Poland;1. Nondestructive Testing Research Center, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, PR China;2. Fraunhofer Institute for Nondestructive Testing IZFP, Dept. Components and Assemblies, Campus E3 1, 66123, Saarbrücken, Germany;1. Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu 603102, India;2. Department of Optoelectronics, University of Kerala, Thiruvananthapuram 695581, India;1. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India;2. Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India |
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| Abstract: | In this paper the size and depth (distance from the tested surface) of defects in austenitic steel were estimated using pulse infrared thermography. The thermal contrast calculated from the surface distribution of the temperature is dependent on both these parameters. Thus, two independent experimental methods of defect size and depth determination were proposed. The defect size was estimated on the basis of surface distribution of the time derivative of the temperature, whereas the defect depth was assessed from the dependence of surface thermal contrast vs. cooling time. |
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