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Graduate Research Assistant Resume Example

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GRADUATE RESEARCH ASSISTANT
Highlights
Tribology, Computational modeling of fatigue and wear, Experimental wear analysis, Surface Engineering, Material and coatings characterization (Stress-Strain, Uniaxial Fatigue, Hardness, SEM), Failure mechanisms (Steel and Al alloys), Fractography, Fracture mechanics, FEA, Design of experiments, MATLAB, FORTRAN, ANSYS, ABAQUS, Python, ProEngineer/Creo
Experience
Graduate Research Assistant08/2011 to 07/2015Association Of American Medical CollegesRemote - Washington Dc / Baltimore Area , DC
  • Designed and conducted fretting wear experiments to characterize wear resistant coatings (NiCr-CrC, CrCo) and Ni based superalloys used in gas turbines: generated wear coefficients, wear maps and investigated wear scars in SEM & optical profiler
  • Simulated fretting wear using non-linear contact model in FEA (ABAQUS) for a Hertzian contact: implemented a novel stress based wear law derived using principles of Damage Mechanics, validated with literature data
  • Created and validated a sub-surface crack propagation model using Fracture Mechanics to predict fretting failure Implemented an Elastic Linear Kinematic Plastic (ELKP) material model in FEA (ABAQUS) to investigate the effect of wear debris on a Hertzian Contact
  • Developed a novel elastic-plastic semi-analytical model to study effect of surface roughness parameters on wear rate.
  • Proposed a theoretical model to predict coefficient of friction based on mechanics of materials
  • Developed an apparatus to visualize nano/micro scale surface phenomenon such as adhesion with AFM probes under a surface profilometer.
Teaching Assistant01/2015 to 05/2015Amarillo CollegeDumas , TX
  • Instructed three classes of 50 students each in the semester and received feedback from students and professors.
  • Conducted office hours to help the students visualize a loading condition and applicability of the theory in practice.
  • Designed and solved homework problems, quizzes and exams.
Graduate Intern05/2014 to 08/2014Virginia Mason Medical CenterKirkland , WA
  • Conducted Thermo Mechanical Fatigue simulations on notched specimens using Garofalo creep and temperature dependent multilinear isotropic hardening plastic material models.
  • Validated the results with data obtained from laboratory experiments.
  • Evaluated the effects of notch radius, temperature range, applied load and phase on thermo mechanical fatigue life.
  • Analysed the simulations statistically and obtained coefficients to extend the model to predict component level failure.
Teaching Assistant - Machine Design (ME 570)08/2013 to 12/2013The Kemtah GroupMarana , AZ
  • Demonstrated several sections of term project on asperity interaction and evaluation of contact stresses.
  • Explained challenging problems in elasticity to a graduate class of 80 (50 off campus) students.
  • Evaluated homework, projects, exams and held office hours to discuss concepts with the students.
Engineer07/2008 to 07/2011John DeereCity , STATE

Material Testing and Selection:

  • Characterized materials (AISI 1045, 4140, 6150, 1070, ADI) and surface engineering techniques (Case hardening, nitriding, cryogenization, carburizing, hard chrome, TiAl coating) for fatigue and wear resistance and provided material expertise to designers
  • Initiated abrasive wear research by developing ASTM G65 based test stand and evaluated wear rates of steel and aluminum alloys
  • Designed and developed a customized test stand to simulate actual harvester operating conditions and conducted experiments on selected designs and materials to measure sliding wear

Product Design and Analysis:

  • Product Life Cycle - Recommended design modifications based on failure analysis for components conceptualized for model year 2017 agricultural machinery.
  • Worked with the mule build team to design components (Aluminum Extrusions) with maximum strength to weight ratio. Identified critical parameters: Manufacturability (DFM), Cost Analysis, Material Selection, Fatigue Strength etc.
  • Conducted Root Cause Analysis (RCA) and Failure Mode and Effects Analysis (FMEA) to identify failure parameters on old design and recommended necessary changes in the new design
Education
PhD: Mechanical EngineeringPresentPURDUE UNIVERSITYCity, StateGPA: GPA: 3.62/4
  • Coursework: Fracture mechanics, Lubrication, Finite element theory, Stereology, Phase transformation, Plasticity theory
  • President, Indian Graduate Students Association
  • Member, Purdue Cricket Club

MS: Mechanical Engineering2014PURDUE UNIVERSITYCity, StateGPA: GPA: 3.62/4
Bachelor of Engineering: Mechanical Engineering2008BIRLA INSTITUTE OF TECHNOLOGY & SCIENCECity, IndiaGPA: GPA: 8.44/10
  • Student coordinator, Placement Division
  • Secretary, Poetry Club
  • Treasurer, Bengali Students Association
Fracture mechanics, Lubrication, Finite element theory, Stereology, Phase transformation, Plasticity theory *President, Indian Graduate Students Association
Affiliations

Society of Tribology & Lubrication Engineers (STLE)

American Society of Mechanical Engineers (ASME)

Publications

Ghosh A., Wang W., and Sadeghi F. "An Elastic-plastic investigation of third body effects on fretting wear in partial slip", International Journal of Solids and Structures (under review)

Ghosh A., Sadeghi F. "A Novel Approach to Model effects of Surface Roughness Parameters on Wear", Wear (2015) Ghosh, A., Paulson N., and Sadeghi F. "A Fracture Mechanics approach to Simulate Sub-surface Initiated Fretting Wear." International Journal of Solids and Structures (2014).

Ghosh A., Leonard B., & Sadeghi F. (2013). A stress based damage mechanics model to simulate fretting wear of Hertzian line contact in partial slip. Wear, 307(1), 87-99.

Ghosh A. & Sadeghi F. (2013). Introduction to Damage mechanics based fretting wear model, STLE Conference, Orlando (2013)

Leonard B. D., Ghosh A., Sadeghi F., Shinde S., & Mittelbach M. (2013). Third Body Modeling in Fretting using the Combined Finite-Discrete Element Method. International Journal of Solids and Structures.

Regalla Srinivasa Prakash, Arnab Jyoti Ghosh, Amit Kumar Singh, P.K. Pakala, P.V.M.Rao, Numerical Slicing and optimum hatching of parametric B-Rep solids in layered manufacturing, International Journal of Computer Aided Engineering and Technology, Vol1, No.1, 2008"

A Ghosh, S Mondal, A Jain, AC Anil, "Ballast water treatment technology: overcoming mechanical constraints by alternate ballast distribution system", Journal of Marine Design and Operations (ISSN 1476-1556).

Additional Information
  • AWARDS AND HONORS ASME Tribology Division Travel Award - Tribology Frontiers Conference Ward A. Lambert Graduate Teaching Fellow, Purdue University Society of Tribology & Lubrication Engineers (STLE) Chicago Chapter Student Scholar John Deere Enterprise Innovation Award for contribution to wear domain Prime Minister (India) invitation to witness Republic Day parade (recognition of academic excellence)
Skills

Product Design and Analysis, ANSYS, chemical engineer, concept, Design of experiments, experiments, FORTRAN, functional, law, machinery, materials, MATLAB, Mechanical, office, modeling, novel, Poetry, predict, prototyping, Python, research

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Resume Overview

School Attended

  • PURDUE UNIVERSITY
  • BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE

Job Titles Held:

  • Graduate Research Assistant
  • Teaching Assistant
  • Graduate Intern
  • Teaching Assistant - Machine Design (ME 570)
  • Engineer

Degrees

  • PhD : Mechanical Engineering Present
    MS : Mechanical Engineering 2014
    Bachelor of Engineering : Mechanical Engineering 2008
    Fracture mechanics, Lubrication, Finite element theory, Stereology, Phase transformation, Plasticity theory *President, Indian Graduate Students Association

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