Abstract
As the traditional uniaxial test requires substantial amount of cost and material usage for specimen, it is hardly applied to the direct diagnosis of structural integrity of in-service facilities. Small punch (SP) test has been, alternatively, introduced to procure material properties because SP test just needs a slice of material (10 × 10 × 0.5 mm) which can be easily obtained from real components without loss of integrity. In this study, for HR3C steel, SP tests were carried out and its three-dimensional finite element (FE) model was also developed to cross-validate the test results. Scanning electron microscope images for SP specimens were taken and compared with crack propagation simulation results generated by the extended finite element method. Furthermore, the minimum thickness change of specimen during the test was measured by several interruption tests. Configuration of SP test specimen was intensively observed with respect to punch displacement by both experiment and FE analysis, respectively.
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Recommended by Associate Editor Nam-Su Huh
Moon Ki Kim received B.S. and M.S. degrees in Mechanical Engineering Seoul National University in 1997 and 1999, respectively, and Ph.D. degrees from Johns Hopkins University in 2004. He had been an Assistant Professor in the Department of Mechanical and Industrial Engineering at University of Massachusetts, Amherst from 2004 to 2008. In 2008, he joined Sungkyunkwan University, where he is currently a Professor in School of Mechanical Engineering. His research interests are focused on computational structural biology based on robot kinematics, bioinstrumentations, and multiscale modeling and simulation.
Taeksang Lee received B.S. and M.S. degrees in Mechanical Engineering from Sungkyunkwan University in 2014 and 2016, respectively. He is currently a Ph.D. student in School of Mechanical Engineering at Purdue University. His research interest is focused on biological membrane based on computational mechanics.
Hoomin Lee received B.S. degree in Mechanical Engineering from Sungkyunkwan University in 2012. He is currently taking a unified M.S. and Ph.D. course in School of Mechanical Engineering in Sungkyunkwan University. His research interests are Multi-physics simulations on continuum domain.
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Lee, T., Lee, H., Kang, S.J. et al. Small punch test and simulation of HR3C steel. J Mech Sci Technol 32, 3115–3121 (2018). https://doi.org/10.1007/s12206-018-0614-x
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DOI: https://doi.org/10.1007/s12206-018-0614-x