I am currently a graduate student at Stony Brook University. The main focus of my research is the non-linear mechanical behavior of Plasma Sprayed Ceramic coatings, which is also known as "Anelastic" behavior of the coatings. We developed a Ex-situ coating property (ECP) sensor in CTSR to observe and quantify the anelasticity of the coatings behavior.
Currently, I am involved in developmment of ECP sensor for higher temperatures which could be able to measure the anleasticity of the YSZ coatings of real turbine blades.
Research Experience
- Graduate Research: "Anelastic behavior of Plasma Sprayed Ceramic Coatings"
(since Fall 2007)
- Research Associate: "Corrosion Behavior of High Carbon Rail Steels in different environment" (2006-07)
- Undergraduate Research: "Processing Strategies of Ultrafine Grain Materials"
(2005-06)
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Teaching Experience (TA)
- Fall 2010 Senior TA, "Engineering System Laboratory"
- Fall 2009 TA, "Engineering System Laboratory"
- Spring 2009 TA, "Engineering System Design- II"
- Fall 2008 TA, "Engineering System Laboratory"
- Spring 2008 TA, "Thermodynamics of Materials"
- Fall 2007 TA "Introduction to Chemical and Molecular Engineering"
Publications
- Gopal Dwivedi, Toshio Nakamura, Sanjay Sampath, "Control introduction of anleasticity in plasma sprayed ceramics", J. Am. Ceram. Soc. (Submitted)
- Gopal Dwivedi, Travis Wentz, Sanjay Sampath, Toshio Nakamura, "Assessing process and coating reliability through monitoring of process and design relevant properties", J.Thermal Spray Tech., 2010, 19(4), 695-712."
- Bijayani Panda, R. Balasubramaniam, Sujata Mahapatra, Gopal Dwivedi,"Fretting and fretting corrosion behavior of novel micro alloyed rail steels" Wear 267 (2009) 1702-1708
- Yajie Liu , Toshio Nakamura ,Gopal Dwivedi, Alfredo Valarezo, and Sanjay Sampath, "Anelastic Behavior of Plasma-Sprayed Zirconia Coatings" J. Am. Ceram. Soc., 91 [12] 4036–4043 (2008)
- Bijayani Panda, R. Balasubramaniam and Gopal Dwivedi,"On the Corrosion Behaviour of Novel High Carbon Rail Steels in
Simulated Cyclic Wet-Dry Salt Fog Conditions"
Corrosion Science, 50 1684–1692 (2008)
- B. Panda, R. Balasubramaniam, Gopal Dwivedi and Sujata Mahapatra, "Corrosion of Novel Rail Steels in 3.5% NaCl Solution"
Transactions of the Indian Institute of Metals, 61 (2008) 177-181.
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Book
- Dilli Loha Stamb ki Kahani (in Hindi)
(Story of Delhi Iron Pillar)
R. Balasubramaniam and Gopal Dwivedi,
National Publishing House, New Delhi, India
Paperback Edition (2008)
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Presentations
- Gopal Dwivedi, "On the bio-mimetic response of thermally spray materials", Provost's Graduate Lecture Series (Nov. 2010), Stony Brook University
- Gopal Dwivedi, Sanjay Sampath, Toshio Nakamura, "Monitoring compliance of TBCs: Application to design of the coatings and assessment of their repeatability", University Turbine System Research (UTSR) workshop, (Oct. 2010), Penn State University, PA.
- Gopal Dwivedi, Sanjay Sampath, Toshio Nakamura, “Monitoring compliance of thermal
barrier coatings using bi-layer curvature analysis", Prof. Tony Evans memorial conference,(Sept. 2010), University of California at Santa Barbara.
- Gopal Dwivedi, Jose Colmenares, Toshio Nakamura, Sanjay Sampath, "Effect of powder size distribution on the reproducibility of plasma spray process: A case study of plasma sprayed YSZ coatings", International Thermal Spray Conference,(May 2010), Singapore.
- Gopal Dwivedi, Jose Colmenares, Toshio Nakamura, Sanjay Sampath, "Changes observed in anelastic behavior of plasma sprayed YSZ coatings by modifying the defect surfaces", International Thermal Spray Conference, (May 2010), Singapore.
- Gopal Dwivedi , A. Valarezo, J. Colmenares-Angulo, S. Sampath, T. Nakamura, Reproducibility Assessment of Plasma Spraying through Elastic Behavior Analysis of YSZ Coatings, International Thermal Spray Conference (ITSC) 2009, May 4-7, 2009, Las Vegas, Nevada, USA
- Gopal Dwivedi, A. Valarezo, S. Sampath,T. Nakamura, J. Colmenares-Angulo, "Repeatability of stress strain behavior of Plasma Sprayed coatings", 33rd International Conference and Exposition on Advance Ceramics and Composites, Jan. 2009, Daytona Beach , Florida, USA
- Kentaro Shinoda, Alfredo Valarezo; Jose R. Colmenares-Angulo, Gopal Dwivedi, Sanjay Sampath, "Deposition Rate Effects on Stress Evolution during Plasma Spraying of Thermal Barrier Coatings" 33rd International Conference and Exposition on Advance Ceramics and Composites, Jan. 2009, Daytona Beach , Florida, USA
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Last Updated: May 15th 2010 |
