Klassen, R - University of Western Ontario - Department of Mechanical and Materials Engineering

个人简介

Industry Experience Scientist/Engineer, 1990-1999 Reactor Materials Division with Atomic Energy of Canada Ltd. Chalk River Laboratories, Chalk River, ON Awards & Distinctions Dr. Terry Base Memorial Teaching Award, 2009 Western University, London, ON Dr. Terry Base Memorial Teaching Award, 2013 Western University, London, ON

研究领域

My main research interest is in experimental studies of rate-dependent plasticity in materials with a particular focus on the effect of microstructural interfaces, such as grain boundaries and interphase boundaries, on local variations in plasticity in a material. My lab at Western University is equipped with High Temperature Nano/Micro-Indentation facilities. My research group also makes use of specialized materials characterization facilities found at Western and at other Universities in Southern Ontario.

近期论文

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M. Haghshenas, R.J. Klassen; “Assessment of the depth dependence of the indentation stress during constant strain rate nanoindentation of 70/30 brass”, Materials Science and Engineering A, 572(2013) pg. 91-97. B.M. Berven, R. Oviasuyi, R.J. Klassen, M. Idacavage, P.J. Ragogna; “Self-crosslinking borate anions for production of tough UV-cured polyelectrolyte surfaces”, Journal of Polymer Science A, 51(2013) pg. 499-508. R. Oviasuyi and R.J. Klassen; “Deducing the stress-strain response of anisotropic Zr-2.5%Nb pressure tubing by spherical indentation testing”, Journal of Nuclear Materials, 432(2013) pg. 28-34. M. Haghshenas, J.T. Wood, and R.J. Klassen; “Effect of strain-hardening rate on the grain-to-grain variability of local plastic strain in spin-formed fcc metals”, Materials Science and Engineering A, 552(2012) pg. 376-383. R. Oviasuyi and R.J. Klassen; “Assessment of the anisotropic flow stress and plastic strain of Zr-2.5%Nb pressure tubes at temperature from 25°C to 300°C”, Journal of Nuclear Materials, 429(2012) pg. 7-9. M. Haghshenas, L. Wang, R.J. Klassen; “Depth dependence and strain rate sensitivity of the indentation stress of the 6061 aluminum alloy”, Materials Science and Technology, 28 no. 9-10 (2012) pg 135-141. D.O. Costa, B.A. Allo, R. Klassen, J.L. Hutter, S.J. Dixon, and A.S. Rizkalla; “Control of Surface Topography in Biomimetic Calcium Phosphate Coatings”, Langmuir, 28 no. 8 (2012) pg. 3871-3880. R. Oviasuyi and R.J. Klassen; “Effect of Zr ion irradiation on the anisotropic deformation of Zr-2.5%Nb micro-pillars” Journal of Nuclear Materials, 421(2012) pg. 54-57. M. Haghshenas, J.T. Wood, R.J. Klassen; “Effect of Strain-hardening rate on splined mandrel flow forming of aluminum alloys” Materials Science and Engineering A, 532(2012) pg. 287-294. B. Bose, R.J. Klassen; “Temperature dependence of the anisotropic deformation of Zr-2.5%Nb pressure tube material during micro-indentation” Journal of Nuclear Materials, 419(2011) pg. 235 - 240. M. Haghshenas, M. Jhaver, R.J. Klassen, J.T. Wood; “Plastic strain distribution during splined-mandrel flow forming”, Materials and Design, 32(2011) pg. 3629 – 3636. B. Bose, R.J. Klassen; “Effect of Zr+ ion irradiation on the mechanical anisotropy of Zr-2.5%Nb pressure tube material”, Journal of Nuclear Materials, 405(2010) pg. 138 - 143. M. J. Roy, D.M. Maijer, R.J. Klassen, J.T. Wood, E. Schost; “Analytical Solution of the Tooling/Workpiece Contact Interface Shape During a Flow Forming Operation”, Journal of Materials Processing Technology 210(2010) pg. 1976-1985. B. Bose, R.J. Klassen; “Effect of ion irradiation and indentation depth on the kinetics of deformation during microindentation of Zr 2.5Nb pressure tube material at 25oC”, Journal of Nuclear Materials, 399(2010) pg. 32-37. J. Chao, A. Mark, M.L. Suominen Fuller, N.S. McIntyre, R.A. Holt, R.J. Klassen, W. Liu;” Study of residual elastic- and plastic- deformation in uniaxial tensile strained nickel-based Alloy 600 samples by polychromatic x-ray microdiffraction (PXM) and neutron diffraction methods”, Materials Science and Engineering A524(2009) pg. 20-27. V. Bhakhri and R.J. Klassen;” The strain-rate dependence of the nanoindentation stress of Gold at 300K: A deformation kinetics-based approach”, Journal of Materials Research 24(2009) pg. 1456-1465. B. Bose and R.J. Klassen;” Effect of copper addition and heat treatment on the depth dependence of the nanoindentation creep of aluminum at 300K”, Materials Science and Engineering A 500(2009) pg. 164-169. M. J. Roy, R.J. Klassen, J.T. Wood; “Evolution of Plastic Strain During a Flow Forming Process”, Journal of Materials Processing Technology 209(2009) pg. 1018-1025. H. Mohammadi, R.J. Klassen, and W-K. Wan; “A Finite Element Model on Effects of Impact Load and Cavitation on Fatigue Crack Propagation in Mechanical Bileaflet Aortic Heart Valve”, Proceedings of the IMechE vol. 222 Part H: Journal of Engineering in Medicine 222(2008) pg. 1115-1125. M.L. Suominen Fuller, R.J. Klassen, N.S. McIntyre, A.R. Gerson, S. Ramamurthy, P.J. King, and W. Liu; “Texture, residual strain, and plastic deformation around scratches in Alloy 600 using synchrotron X-ray Laue micro-diffraction”, Journal of Nuclear Materials 374(2008) pg. 482 - 487. J.P. Weiler, J.T. Wood, R.J. Klassen, E. Maire, R. Berkmortel, G. Wang; “Porosity, damage evolution and fracture in die-cast Magnesium alloy AM60B”, Advanced Materials Research 15-17(2007) pg. 455 – 460. V. Bhakhri and R.J. Klassen; “The depth dependence of the indentation creep of polycrystalline gold at 300K” Scripta Materialia 55(2006) pg. 395-398. J.P. Weiler, J.T. Wood, R.J. Klassen, R. Berkmortel, G. Wang; “Variability in skin thickness in an AM60B magnesium alloy die-casting” Materials Science and Engineering A 419(2006) pg. 297-305. V.Bhakhri and R.J.Klassen; “Investigation of high-temperature plastic deformation using instrumented microindentation test, Part I: The deformation of three aluminum alloys at 473K to 833K” Journal of Materials Science 41(2006) pg. 2259 - 2270. V.Bhakhri and R.J.Klassen; “Investigation of high-temperature plastic deformation using instrumented microindentation tests, Part II: The deformation of Al-Based Particulate Reinforced Composites at 473K to 833K”, Journal of Materials Science, 41(2006) pg. 2249 - 2258.