NDT Analysis of Metal Materials with Internal Defects Using Active Infrared Thermography Method


Article Preview

This study is aimed to analyze the thermal imaging patterns presented by infrared(IR) thermography at which the metal with internal defects are thermally heated. Through the knowledge of non-destructive testing which infrared thermography can be applied to detect the defects inside the materials, there are two materials experimented; one is stainless steel and the other is cast-iron. Thermally, each material of specimens is heated at the base of the material and kept with constant temperature, The artificial defects in the specimen are formulated. Under the shape and location of the defects, temperature profiles are also measured and validated using the computer simulation. It is concluded that the characteristics of thermal patterns obtained from IR thermography are consistent with those of measurement and computations.



Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi




W. T. Kim et al., "NDT Analysis of Metal Materials with Internal Defects Using Active Infrared Thermography Method", Key Engineering Materials, Vols. 321-323, pp. 835-840, 2006

Online since:

October 2006




[1] P. Cielo, X. Maldague, A.A. Deom, R. Lewak, Thermographic nondestructive evaluation of industrial materials and structures, Material Evaluation, Vol. 45, ASNT (1987), pp.452-465.

[2] V. Vavilov, Thermal nondestructive testing: the history and state-of-art, Proceedings of the Qirt 92, Eurotherm Series 27. EETI ed., (1992), pp.179-93.

[3] G. Giorleo and C. Meola, Location and geometry of defects in composite laminates from infrared images., ASM Int J Master Engng, Perform (1998), 7(3): 1.

[4] J. Park, M. Choi and W. Kim, Infrared thermography and modeling to the concrete deck with internal defects as a nondestructive testing, Key Engineering, Vol. 270-273, (2004), pp.938-943.

DOI: https://doi.org/10.4028/www.scientific.net/kem.270-273.938

[5] W. Kim, M. Choi and J. Park Diagnosis of defect points in materials using infrared thermography, Key Engineering, Vol. 297-300, (2005), pp.2169-2175.

DOI: https://doi.org/10.4028/www.scientific.net/kem.297-300.2169