Mechanical Engineering Assistant

DR. PRATHEEK SHANTHRAJ

Max-Planck-Str. *

Max-Planck-Institut f r Eisenforschung

***** * ********

+49 (0-211-****-***

http://www4.ncsu.edu/~pshanth

*.*********@****.**

Education

North Carolina State University Fall 2011

Doctoral Candidate, Mechanical Engineering GPA: 3.90/4.00

Area: Plasticity, Non-linear Continuum Mechanics, Wave Theory

Advisor: Prof. Mohammed A. Zikry

North Carolina State University Fall 2011

Master of Science (enroute), Applied Mathematics GPA: 3.75/4.00

Area: Computational Mathematics, Optimization, Functional Analysis

Co-Advisors: Prof. Ralph Smith, Prof. Mohammed A. Zikry

North Carolina State University Fall 2008

Master of Science, Mechanical Engineering GPA: 4.00/4.00

Area: Multi-Physics, Contact Mechanics, MEMS

Advisor: Prof. Mohammed A. Zikry

M. S. Ramaiah Institute of Technology Spring 2006

Bachelor of Engineering, Mechanical Engineering

Research and Professional Experience

Microstructure Physics and Alloy Design, Max Planck Institut f r Eisenforschung

Research Associate, Materials innovation institute (m2i, the Netherlands) Grant Jan 12 - Present

Project on Development of Full Field Gradient Plasticity FFT Method

- Development of FFT-based spectral methods to predict detailed microstructure response

- Incorporating non-local non-schmid constitutive models for crystal plasticity and development

of general crystal plasticity constitutive framework DAMASK

Mechanical and Aerospace Engineering, North Carolina State University

Doctoral Research Assistant, Office of Naval Research (ONR) Grant Jan 09 - Present

Project on Microstructural Modeling of Failure in Martensitic Steels

- Developed constitutive model based on physically-based evolution laws for dislocation

densities in heterogeneous microstructures and implemented within the framework of crystal

plasticity

- Incorporated dislocation-grain boundary interactions into constitutive formulations

- Developed microstructurally based failure criteria and computational schemes to create

fracture surfaces

Page 1 of 5

Graduate Research Assistant, Air Force Office of Scientific

Research (AFOSR) Grant Jan 07 - Dec 08

Project on Electro-Thermo-Mechanical Modeling of Metal Microcontacts in MEMS

- Incorporated a 3D fractal representation of surface roughness from AFM measurements into

a finite element framework

- Developed a specialized finite element scheme, which couples the thermo-mechanical

asperity deformation with the electro-mechanical contact characteristics. Implemented

contact element in crystal plasticity

- Investigated the effects of surface roughness, residual strains and operating temperature on

the asperity contact behavior and obtaining tribological design guidelines to increase the

lifetime of RF MEMS switches

Mechanical Engineering, M. S. Ramaiah Institute of Technology

Undergraduate Research Assistant, Defense Research and Development

Organization (DRDO, India) Grant Aug 05 - Feb 06

Project on Aluminum Matrix Nanocomposites

- Synthesized and characterized the properties and behavior of copper nanoparticles and

carbon nanotubes

- Tested Aluminum matrix nanocomposites for mechanical strength

MICO-Bosch, India

Summer Internship Feb 06 - Jun 06

Introduced new material supply concept and optimized the value stream for the fuel injection

pump production line

Research Publications

P. Shanthraj, M. A. Zikry (2012), The Effects of Microstructure and Morphology on Fracture

Nucleation and Propagation in Martensitic Steel Alloys, Mechanics of Materials, accepted.

P. Shanthraj, M. A. Zikry (2012), Optimal microstructures for martensitic steels, Journal of

Materials Research, vol. 27, pp 1598-1611. (doi:10.1557/jmr.2012.127)

P. Shanthraj, M. A. Zikry (2012), Dislocation Mechanisms for Void Interactions in Crystalline

Materials, International Journal of Plasticity, vol. 59, pp 154-163.

(doi:10.1016/j.ijplas.2012.01.008)

P. Shanthraj, M. A. Zikry (2011), Modeling Dislocation-Density Evolution in Face-Centered Cubic

Crystals, Acta Materialia, vol. 59, pp 7695-7702. (doi:10.1016/j.actamat.2011.08.041)

P. Shanthraj, O. Rezvanian, M. A. Zikry (2011), Electro-Thermo-Mechanical Finite Element

Modeling of Metal Microcontacts in MEMS, Journal of Microelectromechanical Systems, vol. 20,

no. 1, pp 1-12. (doi:10.1109/jmems.2010.2100020)

Page 2 of 5

P. Shanthraj, T. M. Hatem, M. A. Zikry (2010), Microstructural Modeling of Failure Modes in

Martensitic Steel Alloys, MRS Proceedings, vol. 1296. (doi: 10.1557/opl.2011.1446)

P. Shanthraj (2012), Microstructural Modeling of Failure Modes in Martensitic Steels, Ph. D. Thesis,

North Carolina State University

P. Shanthraj (2008), Electro-thermo-mechanical Modeling of Metal to Metal Contact RF MEMS

Switches, M.S. Thesis, North Carolina State University

Conference Presentations

Q. Wu, P. Shanthraj, M. A. Zikry (2012), Microstructural Modeling of Dynamic Intergranular and

Transgranular Failure Modes in Crystalline Solids, International Workshop on Computational

Mechanics of Materials, IWCMM XXII

P. Shanthraj, M. A. Zikry (2012), Microstructural modeling of intergranular and transgranular failure

modes in crystalline, Fracture Phenomena in Nature and Technology, IUTAM 2012 Symposium

W. M. Lee, P. Shanthraj, H. Salem, M. A. Zikry (2012), Computational and Experimental

Investigation of the Interfacial Dynamic Compressive Behavior of High Strength Aluminum Alloys,

Mechanical Behavior Related to Interface Physics, TMS Annual Meeting & Exhibition

P. Shanthraj, W. M. Lee, M. A. Zikry (2011), Microstructural Modeling of Failure Modes in

Crystalline Alloys, Computational Dynamic Failure and Fracture, Trends & Challenges in

Computational Mechanics

W. M. Lee, K. El-Khodary, P. Shanthraj, M. A. Zikry (2011), Interfacial Microstructurally Induced

Failure Modes in High Strength Aluminum Alloys, Multiscale Modeling of Damage and Failure

Mechanics Symposium in Honor of Professor Douglas J. Bammann's 60th Birthday, ASME

International Mechanical Engineering Congress

P. Shanthraj, W. M. Lee, M. A. Zikry (2011), Modeling of Microstructural Failure in Crystalline

Materials, Multi-Scale Computation and Modeling of Defects in Materials, ASME International

Mechanical Engineering Congress

W. M. Lee, K. El-Khodary, P. Shanthraj, H. Salem, M. A. Zikry (2011), Experimental

Microstructurally-Based Computational Investigation of the High Strain Rate Behavior of High

Strength Aluminum Alloys, Computational Plasticity: Multiscale Modeling in Plasticity, TMS 2011

P. Shanthraj, T. M. Hatem, M. A. Zikry (2010), Modeling of Dislocation-Density Evolution and

Failure in Cubic Crystalline Materials, Damage and Fracture Characterization of Engineering

Materials, ASME International Mechanical Engineering Congress

P. Shanthraj, M. A. Zikry (2010), Microstructural Modeling of Failure Modes in Martensitic Steel

Alloys, New Methods in Steel Design--Steel Ab Initio, MRS Fall Meeting

T. M. Hatem, P. Shanthraj, M. A. Zikry (2010), Microstructural Modeling of Failure Modes in

Polycrystalline Materials, Instability in Solids and Structures, ASME International Mechanical

Engineering Congress

Page 3 of 5

W. M. Lee, K. El-Khodary, P. Shanthraj, M. A. Zikry (2010), Microstructurally-Based Computational

Investigation of the Dynamic Compressive Behavior of High Strength Aluminum Alloys, Advances in

Multiscale Modeling of Polycrystalline Materials, ASME International Mechanical Engineering

Congress

Teaching Experience

Mechanical and Aerospace Engineering, NCSU Aug 08- Aug 09

Teaching Assistant

Teaching assistant for the following courses

- Introduction to Finite Element Analysis, MAE 533 (graduate level course), Fall 08

- Advanced Finite Element Analysis, MAE 734 (advanced graduate level course), Spring 09

- Modern Plasticity, MAE 730 (advanced graduate level course), Spring 09

Coursework

Applied Mechanics: Materials Science: Applied Mathematics:

Advanced Finite Element Advanced Mechanics of Advanced Functional Analysis

Methods Materials Advanced Numerical Analysis

Solid Mechanics Crystal Defects Non-linear Equations and

Modern Plasticity Multi-scale Modeling Optimization

Fracture Mechanics Thermodynamics Vector Space Methods in

Stress Waves Optimization

Thermo-Mechanics Advanced Partial Differential

Mechanics of Composites Equations

Computer Skills

Packages / Tools ANSYS, ABAQUS (UMAT/VUMAT), NIKE2D/DYNA2D,

MATLAB, Python, AutoCAD

Languages FORTRAN (MPI), C, C++

Operating Systems Unix, Linux, MacOS, Windows

Research Interests

Computational Mechanics: The application of advanced numerical optimization techniques to solve

large-scale systems of constrained and unconstrained non-linear equations

Deformation mechanics and heterogeneous failure modes: The prediction and hierarchical

modeling of material response and failure modes in heterogeneous materials using physically based

material models and microstructure representation

Dynamic behavior of materials: High strain-rate deformation; Stress waves in heterogeneous

materials; adiabatic shear band formation

Material Design: The design of high-performance materials through the optimization of grain and

grain boundary morphology, second phase particles and dislocation substructure

Page 4 of 5

Professional Activities

Reviewer: Mechanics of Materials, Journal of Materials Research, Computational Mechanics,

Journal of Micromechanics and Microengineering, IEEE Transactions on Electron Devices

Nominated to Honor Societies: Phi Kappa Phi, Tau Beta Pi

Professional Societies Membership: ASME, MRS, SIAM, TMS

Diploma, Astrophysics, St. Josephs College of Science, India, 2002-2003

References

Prof. Mohammed Zikry Prof. Yong Zhu

Mech. & Aero. Eng, NCSU Mech. & Aero. Eng, NCSU

NCSU Box. 7910 NCSU Box. 7910

Raleigh, NC 27695-7910 Raleigh, NC 27695-7910

919-***-****, *****@****.*** 919-***-****, ********@****.***

Prof. Kara Peters Prof. Dierk Raabe

Mech. & Aero. Eng, NCSU Director

NCSU Box. 7910 Microstructure-physics and Alloy Design

Raleigh, NC 27695-7910 Max-Planck-Institut f r Eisenforschung

919-***-****, ********@****.*** D-40237 D sseldorf

+49 (0-211*******, *.*****@****.**

Dr. Franz Roters Dr. Philip Eisenlohr

Group leader Group leader

Microstructure-physics and Alloy Design Microstructure-physics and Alloy Design

Max-Planck-Institut f r Eisenforschung Max-Planck-Institut f r Eisenforschung

D-40237 D sseldorf D-40237 D sseldorf

+49 (0-211*******, *.******@****.** +49 (0-211*******,*.*********@****.**

Page 5 of 5

Contact this candidate