Research Assistant Professor

Mechanical Engineering Department
The University of Akron, Akron OH 44325
Auburn Science and Engineering Center (Room 435B)

Email: sivakum@uakron.edu
Ph:       330.972.7251
Fax:     330.972.6027

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PhD., Materials Science & Engineering, Nagoya Institute of Tech., Japan (2002)
M.Tech., Ceramic Technology, Anna Univ., India (1998)
M.S., Materials Science, Anna Univ., India (1996)
B.S., Physics, Madurai Kamaraj Univ., India (1994)

Research Interests:
Biography:

Dr. Sivakumar Ramasamy received his PhD degree in Materials Science and Engineering from Nagoya Institute of Technology, Nagoya, Japan in 2002. He worked as a research staff at Japanese Government Research Institutes, National Institute of Advanced Industrial Science & Technology (AIST), Nagoya, Japan from 2002-2004 and National Institute for Materials Science (NIMS), Tsukuba, Japan from 2004-2006. He also worked as Research Assistant Professor at Center of Advanced Research of Energy Conversion Materials, Hokkaido University from 2006-2007 before moving to USA in July 2007 to join Cleveland State University, OH as a research associate. He is currently a Research Assistant Professor at Mechanical Engineering department in The University of Akron, Akron OH.
Teaching:
PUBLICATIONS IN ARCHIEVAL JOURNALS (2001 - present): 22

R. Sivakumar, D. Doni Jayaseelan, T. Nishikawa, S. Honda and H. Awaji, "Influence of MgO on microstructure and properties of Mullite - Mo composites fabricated by pulse electric current sintering", Ceramics International, Vol. 27(5), pp 537 - 541, 2001.

R. Sivakumar, T. Nishikawa, S. Honda and H. Awaji, "Fabrication and Mechanical Properties of Molybdenum Reinforced Mullite Matrix Composites by Pulse Electric Current Sintering Technique", Ceramic Engineering and Science Proceedings, Vol. 22(4), pp 35 - 42, 2001.
 
R. Sivakumar, D. Doni Jayaseelan, T. Nishikawa, S. Honda and H. Awaji, "Mullite - Molybdenum Composites fabricated by Pulse Electric Current Sintering Technique", Journal of European Ceramic Society, Vol. 22, pp 761 - 768, 2002

H. Awaji and R. Sivakumar, "Temperature and Stress Distributions in a Hollow Cylinder of Functionally Graded Materials - The case of Temperature - independent Material Properties", Journal of American Ceramic Society, Vol. 84(5), pp 1059 - 1065, 2001

H. Awaji and R. Sivakumar, "Analysis of Transient Temperature and Stress Distributions in an Functionally Graded Hollow Cylinder", Transactions of Japan Society of Mechanical Engineers, Vol. 68(666A), pp 293 - 299, 2002.

R. Sivakumar
, T. Nishikawa, S. Honda and H. Awaji, "A Novel Technique Applied for Fabricating Alumina/Zirconia Continuous Graded Hollow Tubes", Journal of Ceramic Society of Japan, Vol. 110(5), pp 472 - 475, 2002.

R. Sivakumar
, T. Nishikawa, S. Honda, H. Awaji and F. D. Gnanam, "Processing of Mullite - Molybdenum Graded Hollow Cylinders by Centrifugal Molding Technique", Journal of European Ceramic Society, Vol. 23, pp 765 - 772, 2003

R. Sivakumar
, Mark. I. Jones, K. Hirao and W. Kanematsu, "Scratch Behavior of SiAlON Ceramics", Journal of European Ceramic Society, Vol. 26, pp. 351 - 359, 2006

S. Guo, R. Sivakumar, H. Kitazawa and Y. Kagawa, "Electrical Properties of Silica based Nanocomposites with Multiwall Carbon Nanotubes", Journal of American Ceramic Society, Vol. 90(5), 1667-1670, 2007

S. Guo, R. Sivakumar, and Y. Kagawa, "Multiwall Carbon Nanotube - SiO2 Nanocomposites: Sintering, Elastic Properties and Fracture Toughness", Advanced Engineering Materials, Vol. 9(1-2), 84-87, 2007

R. Sivakumar
, S. Guo and Y. Kagawa, "Thermal Conductivity of Multiwalled Carbon Nanotube - SiO2 Nanocomposites", Scripta Materilia, Vol. 56(4), 265-268, 2007

K. Aoyagi, T. Hiraki, R. Sivakumar, T. Watanabe and T. Akiyama, "Mechanically Activated Combustion Synthesis of b-Si6-zAlzOzN8-z (z = 1, 2, 3, 4)", Journal of American Ceramic Society, Vol. 90(2), 626-628, 2007

K. Aoyagi, T. Hiraki, R. Sivakumar, T. Watanabe and T. Akiyama, "A new route to synthesize b-Si6-zAlzOzN8-z powders", Journal of Alloys and Compounds, Vol. 441(1-2), 236-240, 2007

R. Sivakumar
, K. Aoyagi and T. Akiyama, "Effect of mechanically activated raw materials on b-sialon formation by combustion synthesis, Journal of Materials Research, Vol. 22(10), 2863-2867, 2007

R. Sivakumar
, K. Aoyagi and T. Akiyama, "Thermal conductivity of combustion synthesized beta sialons, Ceramics International, Vol. 34(4), 1391-1395, 2009

R. Sivakumar
, K. Aoyagi, T. Watanabe and T. Akiyama, "Thermal conductivities of beta sialons by mechanical activated combustion synthesis, Key Engineering Materials, Vol. 403, 139-140, 2009

K. Aoyagi, R. Sivakumar, X. Yi, T. Watanabe and T. Akiyama, "Effect of diluent addition on b-sialon purities by mechanically activated combustion synthesis", Journal of the Ceramic Society of Japan Vol. 117(6), 777-779, 2009

R. Sivakumar
, S. N. Tewari, K. N. Lee, D. S. Fox, and R. T. Bhatt, "EBC Development for Hot-Pressed Y2O3/Al2O3 Doped Silicon Nitride Ceramics" Mat. Sci. Engg. A., Vol. 527, 5492-5498, 2010

R. Sivakumar
, S. N. Tewari, K. N. Lee, D. S. Fox, and R. T. Bhatt, "Slurry based multilayer environmental barrier coatings for silicon carbide and silicon nitride ceramics - I. Processing" Surf. Coat. Tech., Vol. 205, 258-265, 2010

R. Sivakumar
, S. N. Tewari, K. N. Lee, D. S. Fox, and R. T. Bhatt, "Slurry based multilayer environmental barrier coatings for silicon carbide and silicon nitride ceramics - II. Oxidation Resistance" Surf. Coat. Tech., Vol. 205, 266-270, 2010

R. Sivakumar, S. N. Tewari, K. N. Lee, D. S. Fox, and R. T. Bhatt, "Strain-tolerant slurry based Environmental Barrier Coatings on SiC/SiC composites" Surf. Coat. Tech., Vol. 205, 3578-3581, 2011

R. Sivakumar, S. N. Tewari, K. N. Lee, D. S. Fox, and R. T. Bhatt, "Environmental Durability of Slurry Based Mullite-Gadolinium Silicate EBCs on Silicon Carbide" J. Euro. Ceram. Soc., Vol. 31, 1123-1130, 2011
         


PRESENTATIONS AND PUBLICATIONS in INTERNATIONAL/NATIONAL CONFERENCES (1999 to present):  22

R. Sivakumar, T. Nishikawa, S. Honda, H. Awaji, "Temperature Distributions in a Stress-Relief-Type Hollow Cylinder Functionally Graded Materials", Proc. of 16th Japan - Korea International Ceramics Seminar, Okayama, Japan, Nov. 30 - Dec. 2, (1999)

R. Sivakumar, T. Nishikawa, S. Honda and H. Awaji, "Hollow Cylinder of Functionally Graded Materials", Proc. of Japan - India Ceramics Seminar, Nagoya, Japan, Sept. 16 - 21, (2000)
 
R. Sivakumar, and H. Awaji, "Temperature and Stress Distribution Analysis of Hollow Cylinder Functionally Gradient Materials", Proc. of 13th Fall Meeting of the Ceramics Society of Japan, Kyushu, Japan, Oct. 11 - 13, (2000)

R. Sivakumar
, T. Nishikawa, S. Honda, H. Awaji, "Fabrication and mechanical properties of Mo reinforced mullite matrix composites by Pulse Electric Current Sintering Technique", 25th International Conference on Advanced Ceramics and Composites, Cocoa Beach, Florida, USA, Jan. 21 - 26, (2001)

R. Sivakumar,
T. Nishikawa, S. Honda, H. Awaji, "Fabrication and Characterization of Continuous Graded Stress-Relief-Type Hollow Cylinder FGMs", International Symposia on Materials Science for the 21st Century (ISMS - 21), Osaka, Japan, May 21 - 26, (2001) 

R. Sivakumar
, T. Nishikawa, S. Honda, H. Awaji, "Functionally Graded Mullite/Mo Hollow Cylinders by Centrifugal Molding Technique", Proc. of 14th Fall Meeting of the Ceramic Society of Japan, Tokyo, Japan, Sept. 26 - 28, (2001)

R. Sivakumar
, T. Nishikawa, S. Honda, H. Awaji, "Mullite - Mo Continuous Graded Cylinders Fabricated by Centrifugal Molding Technique", Proc. of 18th Japan - Korea International Ceramics Seminar, Kagoshima, Japan, Nov. 20 - 22, (2001)

R. Sivakumar
, T. Nishikawa, S. Honda, H. Awaji, F. D. Gnanam, "A New Approach for the Fabrication of Mullite - Molybdenum Continuous Graded Hollow Cylinders", 13th Symposium on Functionally Graded Materials, Osaka, Japan, Nov. 29th , (2001)

R. Sivakumar
, T. Nishikawa, S. Honda and H. Awaji, "A Novel Technique Applied for Fabricating FGM Hollow Cylinder", Annual Meeting of Ceramic Society of Japan, Osaka, Japan, March 20 - 22, (2002)

R. Sivakumar
, Mark. I. Jones, K. Hirao and W. Kanematsu, "Scratch Behavior of SiAlON Ceramics", The 5th International Meeting of Pacific Rim Ceramic Societies, Nagoya, Japan, Sept. 29th - Oct. 2nd , (2003)

W. Kanematsu, Mark. I. Jones, K. Hirao and R. Sivakumar, "Sliding Contact Damage of Y- Alpha/Beta Composite SiAlON Ceramics", 28th International Conference on Advanced Ceramics and Composites, Cocoa beach, Florida, USA, (2004)

R. Sivakumar
and W. Kanematsu, "Reactive Ion Etching of Silicon Nitride for Damage Observation", 106th Annual Meeting and Exposition of the American Ceramic Society, USA, April 18 - 21, (2004)

R. Sivakumar
, Y. Tanaka and Y. Kagawa, "Heat Exposure Effects on Properties of EB-PVD TBCs", 29th International Conference on Advanced Ceramics and Composites, Cocoa beach, Florida, USA, Jan. 23 - 28, (2005)

R. Sivakumar
, K. Aoyagi, T. Hiraki, T. Watanabe and T. Akiyama, "Beta-SiAlON Ceramics Prepared by Combustion Synthesis", 19th Fall Meeting of The Ceramic Society of Japan, Kofu, Japan, Sept. 19 - 21, (2006)

R. Sivakumar
, K. Aoyagi and T. Akiyama, "Beta SiAlON ceramics by combustion synthesis using Si scraps", Japan-Brazil Symposium, Sapporo, Japan, November 22 - 23, (2006)

K. Aoyagi R. Sivakumar, and T. Akiyama, "Cost effective beta SiAlON production by combustion synthesis", Japan-Brazil Symposium, Sapporo, Japan, November 22 - 23, (2006)

S. Guo, R. Sivakumar, T. Nishimura and Y. Kagawa, "Thermal conductivity in multi-wall carbon nanotube-silica based nano-composites", Annual meeting of Ceramic Society of Japan, Tokyo, Japan, March 21 - 23, (2007)

R. Sivakumar
, K. Aoyagi and T. Akiyama, "Thermal conductivities of beta SiAlONs by mechanically activated combustion synthesis", 2nd International Symposium on SiAlONs and Non-oxides, Mie, Japan, Dec. 2 - 5 , (2007)

R. Sivakumar
, K. Aoyagi and T. Akiyama, "Thermal properties of combustion synthesized b-sialons", 31st International Cocoa Beach Conference & Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, USA, January 21 - 26, (2007)

R. Sivakumar
, Surendra N. Tewari, Kang N. Lee, Dennis S. Fox and Ramakrishna T. Bhatt, "Multilayer Environmental Barrier Coatings on Silicon Carbide Ceramics", 33rd International Cocoa Beach Conference & Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, USA, January 18 - 23, (2009)

R. Sivakumar
, Gregory N. Morscher, Surendra. N. Tewari, Ramakrishna T. Bhatt and Dennis S. Fox, "Slurry Based Environmental Barrier Coating (EBC) Infiltration on SiC/SiC Composite Preforms for Improved Oxidation Protection", 35th International Cocoa Beach Conference & Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, USA, January 23 - 28, (2011)

R. Sivakumar, Chris Baker and Gregory N. Morscher, "Tensile Behavior and Health Monitoring to Assess Life of SiC/SiC Single Tow Minicomposites", 36th International Cocoa Beach Conference & Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, USA, January 22 - 27, (2012)
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