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CV: Aerospace Structural Engineer
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Date Submitted: Last Modified: Current job: Employment Term: Job location: Date available: Industry: KeywordsCountry of Citizenship: United States
Availability: Job Type: Consultant
Work Schedule: Flexible
Senior Aerospace Structural Analyst
Ph.D. Engineering Sciences – Mechanical Engineering.
Concentration on Finite Element Analysis and Stress Analysis.
Experience on Test Verification.
Communicates effectively with designers, test engineers, other team members.
Expert on Finite Element Analysis (FEA) Software
ABAQUS, PATRAN.
Expert Technical Software Programmer
C++, FORTRAN, OOP, MS Visual Studio, Finite Elements.
Skilled on work-reporting software
Microsoft's PowerPoint, Excel, Word, and Outlook.
Effective oral and written communication skills.
Work Experience (Last 10 years):
- Analytical Mechanics Associates
Hampton (NASA Langley Research Center), VA US
05/2012 – 02/2019
Hours per week: 40
Engineer Supervisor
Responsibilities include: Develop finite element models of metallic and composite structures. Conduct linear and nonlinear finite element analyses to investigate global as well as local static, dynamic, aeroelastic, thermal, stability and damage tolerance issues. Perform analyses to determine the buckling and postbuckling behavior of various shell-type structures. Provide recommendations for design modifications and conduct analyses of design improvements. Communicate results in written (formal as well as informal) and oral reports. Contributed to the
NASA Shell Buckling Knockdown Factor (SBKF) Project on doing applied research within a Cooperative Agreement with Boeing on fluted-core composite structures; also contributed to the modeling and buckling analysis of the Space Launch System (SLS) core stage. Contributed to the Generation Orbit Launcher 1 (GO) Project on designing, modeling, and analyzing a liquid oxygen propellant tank using carbon-based laminates and load path tailoring resulting in significant weight savings. Produced many Patran, NASTRAN and ABAQUS models for both linear and nonlinear analyses; some used to obtain prediction of carbon-based composite test article responses and critical load under instability (buckling related) conditions that were noted for its accuracy when compared with later actual test measurements.
- Lockheed Martin Corporation
Hampton (NASA Langley Research Center), VA US
08/2008 – 04/2012
Hours per week: 40
Aeronautical Structural Engineer L4
Responsibilities included: Develop finite element models of metallic and composite structures. Conduct linear and nonlinear finite element analyses to investigate global as well as local static, dynamic, aeroelastic, thermal, stability and damage tolerance issues. Perform analyses to determine the buckling and postbuckling behavior of various shell-type structures. Provide recommendations for design modifications and conduct analyses of design improvements. Communicate results in written (formal as well as informal) and oral reports. Formally rated at Lockheed Martin as Exceptional Contributor (best rate attainable). Received a Lockheed Martin Award for Outstanding Contribution in 2009, 2010, and 2011. Contributed on various NASA projects: Shell Buckling Knockdown Factor (SBKF) Project (primarily for the Aries and later the SLS but also on research within a Cooperative Agreement with Boeing on fluted-core composite structures); Efficient Strut Design and Analysis (primarily for the Altair Lunar Lander); PSA Egg-Crate Design and Analysis for the Orion Service Module, prioritizing Load Path and Structural Stability. Produced many Patran/NASTRAN and ABAQUS models for both linear and nonlinear analyses; some used to obtain prediction of carbon-based composite test article responses and critical load under instability (buckling related) conditions that were noted for its accuracy when compared with later actual test measurements. Used classical hand analysis methods to plan and evaluate FEA analysis and structural stability for varied load paths. Acquired a reputation in NASA Langley Research Center as a "reliable, knowledgeable, skilled, hard working contributor in many areas of expertise" (as reported in Lockheed-Martin performance assessment). Developed an innovative methodology for the analysis of flute-core composite aerospace structures that “achieved extraordinary success predicting experimental buckling and failure loads and patterns with an accuracy and detail unheard of previously" (also reported in Lockheed-Martin performance assessment). Asked to transfer this fluted-core technology, provide expertise and advice to a group on another NASA Center (Goddard Space Flight Center). Developed an innovative technology for the analysis of aerospace structures that produces large shell-element models with parametrically-optimized properties approaching the mechanical behavior of detailed, solid-element based submodels; this technique is applicable to either metallic or composite structures offering greater safety and cost reductions.
Education (Highest):
The University of Mississippi Oxford, MS US
Doctorate (Ph.D. Engineering Sciences-Mechanical Engineering, completed on December 1988)
GPA: 3.93 of a maximum 4
Credits Earned: 42 Semester hours
Major: Computational Fluid Dynamics Minor: Structural Mechanics
Relevant Coursework, Licenses and Certifications: Elected to Phi Kappa Phi (1988, Maximum Academic Honor at University of Mississippi.) Awarded Best Engineering Graduate Student (1988, University of Mississippi.) Relevant Course work: Application of Finite Element method in Hydraulics and Hydrodynamics, Structural Dynamics, Theory of Functional and Real Analysis, Turbulence, Wave Propagation, Special Topics and Research in Engineering Sciences, Ph.D. Dissertation on the Development of Three-Dimensional Fluid-Flow Finite-Element Models.
Language Skills:
Language Spoken Written Read
English Advanced Advanced Advanced
Spanish Advanced Advanced Advanced
Publications:
- Hilburger, M.W., Schultz, M.R., Satyanarayana, A, and Oremont, L., “Buckling Analysis of the Space Launch System (SLS) Core Stage Ringless Cryotanks – Updated Buckling Load Predictions Based on As-Built SLS Cryotank Barrel Geometry”, NASA/TM- 2017-219373 Publication (ITAR restricted), February 2017.
- Schultz, M.R., Oremont, L, and Hilburger, M.W., “Experimental and Analytical Characterization of Fluted-Core Sandwich Composite Structures”, 3rd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures, Braunschweig, Germany, March 2015.
- Hilburger, M.W., Schultz, M.R., Satyanarayana, A, and Oremont, L., “Buckling Analysis of the Space Launch System (SLS) Core Stage Ringless Cryotanks”, NASA/TM-2014-218515 Publication (ITAR restricted), August 2014.
- Schultz, M.R., Oremont, L., Guzman, J.C., McCarville, and Hilburger, M., "Compression Analysis and Test of Fluted-Core Sandwich Composite Panels", 2013 National Space & Missile Materials Symposium, Bellevue, WA, June 24-27, 2013.
- Schultz, M.R., Oremont, L., Guzman, J.C., McCarville, D., Rose, C.A., and Hilburger, M., "Compression Response of Fluted-Core Composite Panels", AIAA Journal, Vol. 50, No. 11, November 2012.
- Jegley, D.C., Wu, K.C., Phelps, J.E., McKenney, M.J., and Oremont, L., "Structural Efficiency of Composite Struts for Aerospace Applications", Journal of Spacecraft and Rockets, Vol. 49, No. 5, September-October 2012.
-Oremont, L., Schultz, M.R., "An Efficient Analysis Methodology for Fluted-Core Composite Structures," 53nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 23-26 April 2012. Honolulu, Hawaii.
- Schultz, M.R., Oremont, L., Guzman, J.C., McCarville, D., Rose, C.A., Hilburger, M.W., "Compression Behavior of Fluted-Core Composite Panels," 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 4-7 Apr. 2011. Denver, Colorado.
- Mikulas, M.M.,Jr., Nemeth, M.P., Oremont, L., Jegley, D.C., "Effect of Boundary Conditions on the Axial Compression Buckling of Homogeneous Orthotropic Composite Cylinders in the Long Column Range," 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 4-7 Apr. 2011. Denver, Colorado.
-Jegley, D.C., Wu, K.C., McKenney, M.J., Oremont, L., "Structural Efficiency of Composite Struts for Aerospace Applications," 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 4-7 Apr. 2011. Denver, Colorado.
-Jegley, D.C., Wu, K.C., Phelps, J.E., McKenney, M.J., Oremont, L., Barnard, A., "Evaluation of Long Composite Struts," NASA/TM-2011-217049, 2011, Hampton, Virginia.
Awards:
2012 - NASA Engineering and Safety Center (NESC) Group Achievement Award as a member of the Shell Buckling Knockdown Factor (SBKF) Project Team “for contributing significantly to the NESC mission”.
2011 - Center Director Commendation by NASA LaRC "in recognition of your dedication, commitment to excellence, and achievements in support of the Space Shuttle Program".
2011 - Program Manager Commendation by NASA Space Shuttle Program "in recognition of your dedication, commitment to excellence, and achievements in support of the Space Shuttle Program".
2011 - Award by Lockheed Martin Corporation Langley Office for "Outstanding Contributions".
2010 - Award by Lockheed Martin Corporation Langley Office for "Outstanding Contributions".
2009 - Award by Lockheed Martin Corporation Langley Office for "Outstanding Contributions".
2000 - Award by MSC.Software for "Outstanding Support and Training Contributions".
1998 - Elected to Phi Kappa Phi. (Maximum Academic Honor at University of Mississippi.)
1988 - Award by University of Mississippi for "Best Engineering Graduate Student".
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