Lab Alumni

At Johns Hopkins University

G. Weber, 2020, Dissertation Title: Parametrically Homogenized Crystal Plasticity Model for Nickel-Based Superalloys: Intragranular Microstructures to Polycrystalline Aggregates

X. Tu, 2020, Dissertation Title: Developing Image-based Crystal Plasticity Models for Deformation and Crack Propagation in Polycrystalline 7000-series Aluminum Alloys

S. Chakraborty, 2020, Dissertation Title: Development Of A Self-Consistent Coupled Atomistic-Continuum Model To Study The Brittle And Ductile Fracture In Metallic Materials

D. Oztürk, 2019, Dissertation Title: Multi-scale Modeling and Uncertainty Quantification of Deformation and Fatigue Crack Nucleation in Titanium Alloys using Parametrically Homogenized Constitutive Models

A. Shahba, 2018, Dissertation Title: Crystal Plasticity Finite Element Simulation of Deformation and Fracture in Polycrystalline Microstructures (Joined Technical Data Analysis, Inc.)

Z. Li, 2018, Dissertation Title: Micromechanical Studies of Glass Fiber Reinforced Epoxy Matrix Composites Undergoing Deformation and Damage at High Strain Rates

R. Yaghmaie, 2017, Dissertation Title: Multi-Physics Computational Framework For Coupled Electric, Magnetic and Mechanical Systems Using Wavelet Transformation based Multi Time Scaling (WATMUS) (Joined OnScale)

J. Zhang, 2017, Dissertation Title: Developing A Crack Propagation Model in the Metallic Materials from A Self-Consistent Coupled Atomistic-Continuum Model.

S. Guo, 2017, Dissertation Title: A Coupled Multi-Physics Analysis Model for Integrating Transient Electro-Magnetics and Structural Dynamic Fields with Damage. (Currently a postdoctoral fellow in CMRL)

J. Cheng, 2016, Dissertation Title: Crystal Plasticity FE Models for Predicting Deformation and Twining in Polycrystalline Magnesium Alloys. (Currently a postdoctoral fellow in CMRL)

C. Alleman, 2015, Dissertation Title: Distribution Enhanced Methods of Homogenization for Heterogeneous Materials and Multi-scale Crystal Plasticity Modeling (Joined SandiaNational Laboratory in Livermore, CA)

P. Chakraborty, 2012, Dissertation Title: Wavelet Transformation Based Multi-Time Scale Method for Fatigue Crack Initiation in Polycrystalline Alloys (Joined Idaho National Laboratory)

D. Paquet, 2011, Dissertation Title: Adaptive Multi-Level Model for Multi-Scale Ductile Fracture Analysis in Heterogeneous Aluminum Alloys (Joined Hydro-Québec Research Institute (IREQ)

 

At The Ohio State University

A. Srivastava, 2010, Dissertation Title: A Molecular Dynamics Based Study of Bulk and Finite Polystyrene-Carbon Dioxide Binary Systems (Joined Univ. of Chicago, Argonne National Lab as post-doc.)

V. Dakshinamurthy, Spring 2009, Dissertation Title: Integrated Multi-scale Characterization and Analysis Model for Ductile Fracture of Heterogeneous Metallic Alloys, (Joined ExxonMobil)

D. S. Joseph, 2009, Dissertation Title: Wavelet Decomposed Multi-Time Scale Algorithm for Crystal Plasticity FEM Based Analysis of Cyclic Deformation (Joined Scientific Forming Technologies Corporation)

H. Bhatnagar, Autumn 2008, Dissertation Title: Computational Modeling of Failure in Thermal Barrier Coatings under Cyclic Thermal Loads, (Joined Siemens-Energy, FL)

J. R. Jain, Autumn 2008, Dissertation Title: Homogenization Based Damage Models for Monotonic and Cyclic Loading in 3D Composite Materials, (Joined Baker Hughes Inc, Houston, TX)

J. Bai, Winter 2008, Dissertation Title: A Homogenization based Continuum Plasticity-Damage Model for Ductile Failure of Materials Containing Heterogeneities, (Joined M3TechCenter)

C. Hu, Autumn 2007, Dissertation Title: Locally Enhanced Voronoi Cell Finite Element Model (LE-VCFEM) for Ductile Fracture in Heterogeneous Cast Aluminum Alloys, (Joined Ford Product Development, Dearborn, MI)

M. J. Groeber, Summer 2007, Dissertation Title: Development of an Automated Characterization-Representation Framework for the Modeling of Polycrystalline Materials in 3D, (Joined Air Force Research Laboratory, WPAFB, Dayton, OH)

S. Li, Summer 2005, Dissertation Title: Extended Voronoi Cell Finite Element Model for Damage in Brittle Matrix Composites, (Joined Algor Inc., Pittsburgh, PA)

P. Raghavan, Summer 2003, Dissertation Title: Multiple Scale Modeling of  Damage in Composite Materials,(Joined INTEL Corp., Chandler, AZ)

K. Lee, 1998, Dissertation Title: Adaptive Hierarchical Modeling of Response and Damage in Heterogeneous Materials, (Joined  Scientific Forming Technologies, Columbus, OH)

M. Li,  1998, Dissertation Title: Characterization and Modeling of Damage in Metal Matrix Composite Microstructures, (Joined  Ford Research Laboratory, Dearborn, MI)

S. Moorthy, 1997, Dissertation Title: The Voronoi Cell Finite Element Method for  Response and Damage Analysis of Arbitrary Heterogeneous Media, (Joined Louisiana State University, LA as Assistant Professor)

S. Roy, 1994. Dissertation Title: An Approach to Optimal Design of Multi-stage Metal Forming Processes By Micro-Genetic Algorithms., (Joined Altair Engineering, Troy, MI)

At Johns Hopkins University

Z. Zhu, 2017, Thesis Title: Computational Analysis of Piezoelectric Systems Using a Coupled Multiphysics Finite Element Model.

S. Baby, 2015, Thesis Title: Homogenization Based CDM for Composites.

C. Tao, 2014, Thesis Title: Crystal Plasticity Based Finite Element Modeling in Polycrystalline Ti-7Al Alloys.

B. Leibowitz, 2014,Thesis Title: Method for Computing Motor Vehicle Crash Energy Based on Detailed Crush Data and Stiffness Values.

 

At The Ohio State University

E. Tedjaseputra, 2011, Thesis Title: Numerical Simulations of Micro structure-Based Crystal Plasticity Finite Element Model for Titaniu, and Nickel Alloys.

J. Thomas, 2011, Thesis Title: Simulating the Mechanical Response of Titanium Alloys Through the Crystal Plasticity Finite Element Analysis of Imaged-Based Synthetic Microstructures, (Joined AltaSim Technologies, OH).

P. Dondeti, 2011, Thesis Title: Rate-Dependent Homogenization Baed Continuum Plasticity Damage Model for Dendritic Cast Aluminum Alloys, (Joined Cummins Engineering, IN).

J. Zhang, 2011, Thesis Title: Molecular Dynamics Simulations of Crack Propagation Behavior and Mechanisms in Nickel, (Joined Ph.D. in CE at JHU).

C. Alleman, 2011, Thesis Title:Molecular Dynamics Investigations of Polystyrene-Based Binary Thin Film SYstems: Interfacial Properties and Mechanical Behavior, (Joined Ph.D. in CE at JHU)

P. Gokulanandam, 2011, Thesis Title: Homogenization based Continuum Damage Mechanics Models for Composites under Monotonic and Cyclic Loading, (Joined SIMULIA, OH)

S. Behera, 2010, Thesis Title: Molecular Dynamics Simulations of Crack Evolution in Nickel, (Ph.D. student in ME at OSU)

K. Kirane, Autumn 2007,  Thesis Title: Grain Level Fatigue Crack Initiation Model Based on Crystal Plasticity Finite Element Analysis, (Joined Goodyear, OH)

S. Manchiraju, Summer 2007, Thesis Title: A Dual Time Scale Finite Element Model for Simulating Cyclic Deformation of Polycrystalline Alloys, (Pursuing a Ph.D. in MSE at OSU)

G. Venkatramani, Autumn 2006, Thesis Title: Grain Size Dependent Crystal Plasticity Finite Element Model for Deformation and Creep Studies In Polycrystalline Ti-6242, (Joined Goodyear, OH)

Y. Bhandari, Summer 2006, Thesis Title: CAD Based Simulation of Polycrystalline Microstructures Finite Element Mesh Generation from FIB Serial Sections, (Joined ABAQUS Inc.)

A. Tiwary, Summer 2005, Thesis Title: Numerical Conformal Mapping Methods for Arbitrary Shaped Heterogeneities in VCFEM, (Joined Siemens-Westinghouse, FL)

D. Deka, Summer 2005, Thesis Title: Crystal Plasticity Modeling of Deformation and Creep in Polycrystalline Ti-6242, (Joined Acteon Group’s Offshore Inc., TX)

S. Sinha, Summer 2005, Thesis Title: Experimental-Computational Approach to Life Prediction Based on Ratcheting Failure in HSLA Steels, (Joined ABAQUS West Inc., CA)

S. Swaminathan, 2004, Thesis Title: Statistically Equivalent Representative Volume Elements for Composite Microstructures, (Joined ABAQUS Inc., RI)

A. Khadke, 2003, Thesis Title: Numerical Simulations and Design of Shearing Process for Aluminum Alloys, (Joined Third Wave Inc., MN)

K. Ganapati, 2002, Thesis Title: Stress Analysis of a Canine Femur with a Prosthetic Stem, (Joined Vextec Corp., TN)

P. Eder, 2002, Thesis Title: High Performance Multi-level parallel Programming for Adaptive Multi-Scale Finite Element Modeling of Composite and Porous Structures, (Joined Altair Inc., OH)

V. Hasija, 2002, Thesis Title: Modeling Deformation and Creep in Ti-6Al alloys with Experimental Validation, (Joined GESAC Inc., MD)

J. Fan, 2000, Thesis Title: A Three-Dimensional Voronoi Cell Finite Element Method. For Linear Elasticity, (Joined SGI., MN)

Y. Ling, 2000, Thesis Title: Interfacial Debonding in Multi-fiber Polymer Matrix Composites by the Voronoi Cell Finite Element Method,  (Joined Taylormade Inc., CA)

M. Narasa, 1997, Thesis Title: Large Deformation Voronoi Cell Finite Element Analysis with Crystalline Plasticity, (Joined MARC Inc., CA)

S. Raju, 1995, Thesis Title: R-S Adapted Arbitrary Lagrangian-Eulerian Finite Element Method for Metal Forming Problems with Strain Localization, (Joined Hibbit Karlsson Sorensen Inc., RI)

Y. Liu, 1994, Thesis Title: Voronoi Cell Finite Element Method for Micropolar Thermoelastic Heterogeneous Materials.

T. Camino, 1993, Thesis Title: Use of the Finite Element Method in Design Optimization of Total Hip Arthroplasty

S.N. Mukhopadhyay, 1991, Thesis Title:  Analysis of Random Composites Using Voronoi Cell Finite Elements.

S.K. Manna, 1991, Thesis Title: An Adaptive Arbitrary Lagrangian Eulerian Finite Element Analysis of Metal Forming Problems.

 

N. Anandavalli

CSIR-Structural Engineering Research Centre,
CSIR Campus, Taramani, Chenai 600 113
INDIA
Email: [email protected]

Background:

Dr. N. Anandavalli is a Principal Scientist of the Shock and Vibration Group at the CSIR-Structural Engineering Research Centre in Chennai, India. She spent April to July 2015 with the group and she is now back in Chenai.

Her research is towards enhancing the shock resistance capability of new as well as existing structures / structural components. Efficient and simplified modelling strategies for air and contained blast loading was developed by her to predict response behaviour of blast loaded structures. Her contribution towards knowledge generation in the area of blast resistant design of large capacity laced reinforced concrete (LRC) explosive storage structures are significant. Design has reduced the separation distance by about 30% and was proved successful through field trials. She was involved in the evolution of Laced Steel-Concrete Composite (LSCC) system by innovative integration of structural elements. This system possess enhanced ductility and rotational capacity and maintains structural integrity avoiding sudden failure, which finds application in structures resisting suddenly applied loads with spin-off for other applications too. Conventional finite element modelling of Reinforced Concrete (RC) / LRC / LSCC requires steel and concrete to be modelled separately, which is tedious and time consuming. To alleviate this, she has formulated a simplified approach, which treats RC/LRC/LSCC as homogenous material, which has significantly reduced the computational demand in analyzing such structures. Currently, she is involved in developing strategies for blast protection of structures. Her research interests include blast response behaviour of structures, computational methods, sustainable materials and multi-scale modelling of cement based composites. Her research contributions are towards strategic area, which is of national importance.

Project at JHU:

Concrete is a widely used material for construction of infrasturcutre such as buildings, bridges, nuclear containment vessels, power plant strucutres, explosive storage structures, etc. Research towards understanding the material behaviour is essential for enhancing their mechanical properties. Concrete is considered as homogenous at macro scale, while it is heterogenous in nature. At meso scale, concrete is a multi-phase material. With the advancement in numerical and computational methods, engineers can understand the behaviour of the materials before they are incorporated in the design procedure. Failure characteristics can be analysed in advance so that the material is efficiently utilised. She was awarded the ‘Raman Research Fellowship’ to conduct research on Investigations on behaviour of concrete using meso scale models at Johns Hopkins University with Prof. Somnath Ghosh. During the fellowship she was involved in:

• Development of geometrical model of meso scale structure of concrete using digital image processing based on cellular automata theory
• Development of algorithm for generation of random aggregate arrangement based on take and place method

 

 

 

Dr. Jiming Zhou

School of Mechanical Engineering
Northwestern Polytechnial University, Xi’an, 710072, China
Email: [email protected]

 

Background:

Dr. Jiming Zhou is Associate Professor from Northwestern Polytechnical University in Xi’an, China. He came to CMRL as  a visiting scholar in February 2017 and plans to return to China in February 2018.

His research is towards the fabrication of metal matrix composites and related simulation on the properties prediction and microstructure design of MMCs. He fabricated metal matrix composites by use of liquid solid forming process under high pressure with the principle of infiltrating melt alloy into the reinforcement in the form of porous preform. He contributed three aspects to the research community of metal matrix composite fabrication. (1) He proposed serials of methods to observe the infiltration behavior of melt alloy into the porous preform. The related parameters with infiltration behavior can be determined by use of the devised devices through the equation-solving method. (2) He simplified the RSA (random sequential absorption) method to construct the micromechanical model for discontinuously reinforced composite efficiently. In this method, the discontinuous reinforcement was regarded as the short segment no matter which type of reinforcement, the short fiber, particulate, or hybrid. The intersection determination was conducted in MATLAB with simple code and the coordinates of reinforcement in space was generated into a data file. The data file was then imported into ABAQUS to generate the micromechanical model. (3) He proposed to modify the interface of metal matrix composite by grafting CNT on carbon fiber so that the strength and ductility of MMCs can be improved simultaneously.

 

Project at JHU:

Interface of composite plays very important role to strengthen the material. Research towards understanding the interface strengthening mechanism is essential for design high efficient composite, especially for the multiscale reinforcement reinforced composite by use of carbon nanotube (CNT) grafting on the micro carbon fiber. At Johns Hopkins University with Prof. Somnath Ghosh, he will be involved in:

(1) Development of molecular dynamic model for interface between CNT grafted carbon fiber and magnesium;

(2) Predicting the interface strength and failure mechanism by use of the developed molecular dynamic model and software LAMMPS.

At The Ohio State University

At The Ohio State University

G. Balderas, 2009

K. Chisaka, 2009

C. Alleman, 2007 – 2008

M. Lambert, 2001 – 2003

R. Butler, 2002 – 2003

M. Groeber, 2002 – 2003

P. Eder, 1999 – 2000

D. Marlow, 1990 – 1991

D. Williams, 1989 – 1990

[nav type=”tabs”] [item title=”Jayleen Gunn”]

Jayleen Gunn

Department of Mechanical Engineering
The Ohio State University
Room W494
201 West 19th Avenue
Columbus, OH 43210 
Phone: (614) 247-2101
Fax: (614) 292-3163
E-mail: [email protected]
[/item] [item title=”Ji Yeon ‘Jae’ Hong”]

Ji Yeon “Jae” Hong

Research Program Coordinator (2012-2014)
Currently:

Product Support Specialist
Esri Korea
City Air Tower Suite #2005.36
Teheran-ro 87-gil Gangnam-gu
Seoul, 135-973 Korea
Phone: +82-2-2-86-1900
E-mail: [email protected]

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