welcome to

Advanced Mechanics & Materials Group

@ Embry-Riddle Aeronautical University

Dr. Sirish Namilae


Our Research



At Advanced Materials and Mechanics Group our research is at the intersection of mechanics and materials science. We study the structure-processing-property correlation in advanced materials like aerospace composites and nanomaterials using experimental mechanics methods and computational approaches like finite element, lattice beam models and Molecular Dynamics Simulations.

Another focus area is modeling of active particles (e.g. pedestrians, bacteria etc). We adapt molecular dynamics based approaches to pedestrian movement and apply it to evaluate movement and contacts among passengers during air travel. This has applications in formulating air-travel related policies for minimizing infection transmission. We are a part of a multi-university Project VIPRA (Viral Infection Propagation through Air-travel) which studies infection modeling using pedestrain movement, phylogeography and parallel computing.

Our group is housed in both Composites Laboratory and Structures Laboratory in Lehman Building and uses experimental capabilities of both labs as well as computational facilities of our in-house cluster Rigel and external computing clusters like National Center for Supercomputing Applications (NCSA) Bluewaters supercomputer.

Dr Namilae's research has been funded by NSF, NASA, DOT and internally by Embry-Riddle. Our work has been featured in media including Economist, NSF media website etc.

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Piezoresistive Nanocomposites

Development and testing of nanocomposites for strain and space debris sensing applications

Funding: NASA SBIR

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Aerospace Composites

Manufacturing defects and bonded patch repair of aerospace structures

Funding: ERAU FIRST

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Mesoscale Microstructure Modeling

Monte Carlo models of hybrid networks to optimize microstructures for synergy between fillers of different shapes

Funding: NASA SBIR

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Molecular Dynamics Based Pedestrian Dynamics

Modeling the Pedestrian movement in crowded areas like airports based on concepts of molecular dynamics and social force models. Emergency planning and multiscaling with larger scale transportation models.

Funding: DOT UTC

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Multiscale Pedestrian-Infection Dynamics Models

Combining Pedestrian movement with stochastic infection transmission models for studying disease spread during air travel.

Funding: NSF


Dr. Sirish Namilae


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Dr. Sirish Namilae

Associate Professor

Dr. Sirish Namilae joined Aerospace engineering department in 2014 after a six year career at Boeing. He earned a master’s degree in materials science from Indian Institute of Science and a PhD in mechanical engineering from Florida State University. Subsequently, he was a postdoctoral fellow at Oak Ridge National Laboratory.

At Boeing he worked in airframe structure analysis in several programs like 787-8 & 9, 777-9X, rotorcraft programs and in product development. He was the structures focal for main landing gear doors in multiple aircrafts and also served as Associate Editor (Structures) for the company’s internal journal, Boeing Technical Journal. He also taught undergraduate engineering courses at Drexel University as an adjunct faculty. He has published over 30 well-cited journal and conference papers.

Dr. Namilae’s specialization is in the areas of solid mechanics and materials science. His current research interests are in computational modeling of active particles, aerospace composites and nanocomposites. On a personal note he is a cycling enthusiast training for his first century ride.

Link to Google Scholar Citations.


Graduate Students


Audrey Gbaguidi finished his Master of science in Aerospace Engineering and joined the PhD program in Fall 2015. He is working on developing nanocomposite sensor to detect MMOD impact damage on inflatable habitat. He likes to play tennis in his free time and loves traveling Europe. He is also a great Real Madrid fan!

Pierrot Derjany finished his second Master of Science degree in Aerospace engineering after his first Masters in Aeronautical Engineering from Lebanon with 120 credit hours of mathematics and joined the PhD program in Fall 2015. He is currently combining the principles of molecular dynamics, pedestrian movement and epidemic modeling to suggest alternative practices in airports during a viral outbreak.

Sandeep Chava finished his Master of Science in Aerospace Engineering and joined the PhD program in Fall 2017. He yearned to be a scientist by getting facinated seeing flights in the sky, every since he was a child. He also likes to travel and explore new places. He is technology enthusiast, philanthropist and social activist.

Nengda Jiang Is pursuing his Master of Science in Aerospace Engineering specializing in flexible nanocomposite sensors.

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Audrey Gbaguidi

PhD Student

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Pierrot Derjany

PhD Student

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Sandeep Chava

PhD Student


News


Dec 2017: Watch Dr.Namilae in Channel 9 news !Link.

Dec 2017: Congratulations Pierrot Derjany on successfully completing PhD preliminary !!

Aug 2017: Congratulations Audrey Gbaguidi on successfully completing PhD preliminary !!

Aug 2017: Our work on infection transmission in airplanes is featured in several international newspapers and websites including Economic Times, Deccan Chronicle and Hindustan Times !!

Aug 2017: Congratulations Sandeep Chava for joining the team as a new PhD student starting this Fall 2017. Welcome back Sandeep!

Aug 2017: Audrey Gbaguidi's first journal paper appeared in ASME JEMT. Congratulations !

July 2017: Congratulations Pierrot Derjany for publishing his first journal paper in Phys Rev E!


Publications


Journal Papers

1 . A Gbagaudi, S Namilae and D Kim, Monte Carlo Model for Piezoresistivity of Hybrid Nanocomposites, ASME Journal of Engineering Materials and technology, 140 (2017)

2 . S. Namilae, P Derjany, A Mubayi, M Scotch and A Srinivasan, Multiscale Model For Infection Dynamics During Air Travel, Physical review E, 002300(2017)

3 . S. Namilae, A Srinivasan, A Mubayi, M Scotch and R Pahle, Self-propelled pedestrian dynamics model: Application to passenger movement and infection propagation in airplanes, Physica A 465 (2017) 248–260

4 . S. Namilae, A Srinivasan, A Mubayi, M Scotch and R Pahle, Self-Propelled Pedestrian Dynamics Model for Studying Infectious Disease Propagation during Air-Travel, Journal of Transport & Health (2016) 3 (2), S40

5 . S. Namilae, J. Li and S. Chava, Improved Piezoresistivity and Damage Sensing Capability of Hybrid Carbon Nanotube Sheet-Graphite Platelet Nanocomposites, (In review)

6 . S. Namilae and P. Minguet, Study of fracture process zone characteristics using cohesive zone models, Boeing Technical Journal (2013)

7 . S. Namilae, B Radhakrishnan, JR Morris, Atomistic simulation of the effect of Ga on crack tip opening in Al bicrystals, Modeling and Simulation in Materials Science and Engineering, 16, 0750011, (2008)

8 . S. Namilae, DM Nicholson, PKVV Nukala, CY Gao, YN Osetsky and DJ Keffer, Absorbing boundary conditions for molecular dynamics and multiscale modeling, Physical Review B 76, 144111 (2007)

9 . S. Namilae, M. Fuentes-Cabrera, B Radhakrishnan, GB Sharma and DM Nicholson, Energetics of hydrogen storage in organolithium nanostructures, Chemical Physics Letters, 436, 150, (2007)

10 . S. Namilae, B Radhakrishnan and GB Sharma, Atomic simulations of interfacial sliding in amorphous carbon nano-composites, Composites Science and Technology, 67, 1302, (2007)

11 . S. Namilae, U. Chandra, A. Srinivasan and N. Chandra, Study of interfacial behavior of carbon nanotube reinforced composites using parallel molecular dynamics simulations, Computer Modeling in Engineering and Sciences, (2007)

12 . S. Namilae and N. Chandra, Role of atomic scale interfaces in the compressive behavior of carbon nanotube based composites, Composite Science and Technology, 66, 2030, (2006)

13 . G.A. Shen, S. Namilae, and N. Chandra, Load transfer issues in tensile and compressive behavior of multiwall carbon nanotubes, Materials Science and Engineering A, 429, 66, (2006) (Featured among top 25 downloaded articles in the journal, 2006)

14 . S Namilae and N Chandra, Multiscale model to study the effect of interfaces in carbon nanotube based composites, ASME Journal of Engineering Materials and Technology, 127, 222, (2005). (Featured among top 10 downloaded articles in the journal, 2006, 2007 & 2008)

15 . S Namilae, N Chandra and C Shet, Mechanical Behavior of Functionalized Nanotubes, Chemical Physics Letters, 387, 247, (2004)

16 . N Chandra, S Namilae and C Shet, Local Elastic Properties of Carbon nanotubes in Presence of Stone-Walls Defects, Physical Review B, 69, 094101, (2004)

17 . N Chandra and S Namilae, Tensile and compressive behavior of carbon nanotubes: Effect of functionalization and topological defects, Mechanics of Advanced Materials and Structures, 13, 115 (2006)

18 . C Shet, N Chandra and S Namilae, Defect-defect interaction in carbon nanotubes under mechanical loading, Mechanics of Advanced Materials and Structures 12, 55, (2005)

19 . C Shet, N Chandra and S Namilae, Defect annihilations in carbon nanotubes under thermomechanical loading, Journal of Materials Science. 40, 27, (2005)

20 . J Kohle, U Chandra, S Namilae, A Srinivasan and N Chandra, Parallel simulation of Carbon Nanotube based composites, Lecture Notes in Computer Science, 3296, 211 (2004)

21 . N Chandra and S Namilae, Multi-Scale Modeling of Nanocrystalline Materials Material Science Forum, 427-429, 273 (2003)

22 . S Namilae, N Chandra and T G Nieh, Atomistic simulation of grain boundary sliding in pure and magnesium doped aluminum bicrystals, Scripta Materialia, 46, 49, (2002)

23 . S Namilae, N Chandra and T G Nieh, Atomistic simulation of effect of trace elements on grain boundaries of aluminum, Material Science Forum, 357-359, 387, (2001)

24 . S Namilae N Chandra and T G Neih, Atomistic Simulation of Effect of Trace Elements on Grain Boundaries of Aluminum, International conference of superplasticity in Advanced Materials (August 2000)

Conference Presentations and Papers

25 . S. Namilae, Multiscale Model for Pedestrian and Infection Dynamics During Air Travel, International Conference for Risk Analysis 2017 Chicago (Invited Presentation)

26 . P Derjany, S Namilae, A Mubayi M Scotch and A Srinivasan, Molecular Dynamics Like Numerical Approach for Studying Infection Propagation, International conference of composites Engineering ICCE (2017)

27 . S. Namilae, J. Li, N. Jiang and Y. Zhao, Effect of Matrix Mechanical Behavior and Filler Morphology on the Piezoresistivity of Hybrid Nanocomposites, International conference of composites Engineering ICCE (2017)

28 . P Derjany, S Namilae, A Mubayi M Scotch and A Srinivasan, Multiscale pedestrian movement - infection dynamics model for transportation hubs, Transportation Research Forum, Chicago (2017)

29 . A Gbagaudi, D Kim and S Namilae, Dynamic piezoresistive response of hybrid nanocomposites, SPIE conference 2017

30 . A Muhammad, A Gbagaudi, S Namilae and D Kim, Structural health monitoring of inflatable structures for MMOD impacts , SPIE conference 2017

31 . A Gbagaudi, S Namilae and D Kim, Numerical and Experimental Investigation of the Piezoresistive Behavior of Hybrid Carbon Nanotube Sheet – Graphene Nanocomposites, AIAA Scitech (2017)

32 . S Chava, S Choudhary and S Namilae, Delamination Detection in Carbon Fiber Composites using Piezoresistive Nanocomposites AIAA Scitech (2017)

33 . A Srinivasan, C. D. Sudheer, and S Namilae. "Optimizing Massively Parallel Simulations of Infection Spread Through Air-Travel for Policy Analysis." Cluster, Cloud and Grid Computing (CCGrid), 2016 16th IEEE/ACM International Symposium on. IEEE, 2016.

34 . S. Namilae, A. Srinivasan, A. Mubayi, and M. Scotch, Self-Propelled Pedestrian Dynamics Model for Studying Infectious Disease Propagation during Air-Travel, Travel an Public Health Conference, San Jose, July 2016

35 . M. Scotch, Beard R, R. Pahle, A. Mubayi, S. Namilae and A. Srinivasan, Combining human movement models with phylogeography for airplane policy options during Ebola outbreaks, 13th International Conference on Molecular Epidemiology and Evolutionary Genetics of Infectious Diseases, Antwerp, Belgium, May 2016

36 . J Li and S. Namilae, Nanotube Sheet - Graphite Hybrid Nanocomposite for Damage Detection , TMS conference (Feb 2016)

37 . S Namilae and P. Minguet. Fracture process zone length using cohesive zone models, Boeing Technical Excellence Conference, St Louis, June 2011

38 . D.M.Nicholson, S. Namilae, B. Radhakrishnan and N.S. Kulkarni, Modeling Electron Transport in Copper Interconnect Microstructures. IEEE 2007 International Interconnect Technology Conference, Burlingame, CA,

39 . S. Namilae, B Radhakrishnan and GB Sharma, Atomic simulations of interfacial sliding in amorphous carbon nano-composites, TMS Annual Meeting (Feb 2007)

40 . S. Namilae, B Radhakrishnan and GB Sharma, Stress assisted grain boundary migration in flat grain boundaries, TMS Annual Meeting (Feb 2007)

41 . S Namilae and N Chandra, Molecular dynamics simulations of interfaces in nanocomposites, International Conference of Plasticity, Kuaii, Hawaii, (Jan 2005)

42 . N Chandra and S Namilae, Mechanics of atomic scale interfaces in carbon nanotube reinforced composites, Proceedings of the 2004 International Conference on Computational and Experimental Engineering and Sciences, Madeira, Portugal, 26-29 July ‘04, Advances in Computational and Experimental Engineering and Science, Ed., SN Atluri and AJB Tadeu, ISBN 0-9657001-6-X , pp 351-356, (2004).

43 . S Namilae and N Chandra, Three Level Hierarchical Model to Incorporate Interface Effects in Carbon Nanotube Based Composites, Proceedings of SECTAM XXII, Developments in Theoretical and Applied Mechanics, edited by Hassan Mahfuz and Mahesh V Hosur, ISBN 0-615-12639-1, pp 33-41, (2004).

44 . N Chandra, S Namilae and A. Srinivasan, Linking Atomistic and Continuum Mechanics Using Multi-scale Models, Proceedings of the 8th International Conference on Numerical Methods in Industrial Forming Processes (Numiform 2004), AIP Conference Proceedings, Vol. 712, Issue 1, pp 1571-1576, June 13-17, Columbus, OH (2004)

45 . M Naveen, S Namilae, C Shet and N Chandra , Phase Space Distribution of Carbon Nanotubes in a Constant Temperature Molecular Dynamics Simulations, Proceedings of SECTAM XXII, Developments in Theoretical and Applied Mechanics, edited by Hassan Mahfuz and Mahesh V. Hosur, ISBN 0-615-12639-1, pp 1-11, (2004).

46 . J Kohle, U Chandra, S Namilae, A Srinivasan and N Chandra, Parallelization of Molecular Dynamics for Modeling Interface Properties of Carbon Nanotube Based Composites, Proceedings of SECTAM XXII, Developments in Theoretical and Applied Mechanics, edited by Hassan Mahfuz and Mahesh V Hosur, ISBN 0-615-12639-1, pp 23-32, (2004).

47 . N Chandra and S Namilae, Multi-Scale Modeling of Nanocrystalline Materials International Conference of Superplasticity in Advanced Materials (September 2003)

48 . N Chandra, S Namilae and C Shet, Mechanics of Defects at Nanoscale, 16th U.S. Army Symposium on Solid Mechanics, Charleston, SC (May 2003)

49 . N Chandra and S Namilae, Computational Methodologies to link Atomistic and Continuum Scales in the Design of Nanoscale Systems, AIAA/ISSMO Symposium on multidisciplinary analysis and Optimization, Atlanta, GA (September 2002)

50 . S Namilae and N Chandra, Application of Asymptotic Homogenization to Atomic Scale, 14th U.S. National Congress of Theoretical and Applied Mechanics, Blacksburg, VA, (June 2002)

51 . S Namilae N Chandra and T G Neih, Atomistic Simulation of Effect of Trace Elements on Grain Boundaries of Aluminum, International conference of superplasticity in Advanced Materials (August 2000)



Research Facilities


Advanced Materials and Mechanics Group is housed in both Composites Laboratory and Structures Laboratory in Lehman Building and the new MicaPlex. We use experimental capabilities of both labs. We also use our inhouse parallel cluster and Xsede resources for computing.

Computational Facilities at Embry Riddle include a 280 CPU, 982GB memory computer cluster (Rigel). We also have access to XSEDE supercomputers, including Stampede (#7 in the world) and National Center for Supercomputing Applications (NCSA) Bluewaters supercomputer . In addition graduate students and Dr Namilae use eight-processor high end workstations for daily use. The computational resources are used for finite element and molecular dynamics simulations.

Composite lab facilities include space for wetlayup and prepreg assembly, vaccume bagging facilities and oven for composites curing. The lab also has large work tables for composite lay-up, a wet-saw for cutting specimens from larger panels, materials storage freezers and a down-draft table with air filtering capabilities for specimen sanding.


Dr. Sirish Namilae

Aerospace Engineering Department
600S Clyde Morris Blvd, Daytona Beach, FL - 32114
Telephone: +386 226 6445
E-mail: namilaes@erau.edu
Web Admin: Sandeep Chava (chavas@my.erau.edu)