arnabocean

— by Arnab Gupta

Resumé

(Please email me for more details.)

Profile

  • Research and Development Engineer based in the Washington, D.C. Metro Area. We develop and implement novel Non-Destructive Evaluation (NDE) technology for diverse engineering applications.
  • Ph.D. in Engineering Mechanics, specializing in the NDE, damage evolution and wave mechanics of anisotropic materials. Experienced in analyzing the health and future degradation of fiber reinforced composites.
  • Extensive experience in data and statistical analysis applications in automotive safety research at the Virginia Tech Transportation Institute (VTTI), USA’s premier transportation research center.

Education

  • Ph.D. in Engineering Mechanics
    Virginia Tech, Blacksburg, VA.
    Aug 2017

  • Bachelor of Mechanical Engineering (First Class)
    Jadavpur University, Kolkata, India.
    May 2007.

Previous Research Experience

Ph.D. Candidate

Major: Engineering Mechanics
Department of Biomedical Engineering and Mechanics
(formerly Engineering Science and Mechanics),
Virginia Tech.
Aug 2007 to July 2017.

  • Dissertation:

    • Title: Monitoring Progressive Damage Development in Laminated Fiber Reinforced Composite Materials. (PDF, ~20MB)

    • Adviser: Dr. John C. Duke, Jr.

  • Contributions

    • Characterize damage development and predict future failure in composites with crossply fiber orientation using analysis of experimental simulated acoustic emission data.

    • Develop automated algorithm and signal analysis software to estimate the arrival time of extensional and flexural Lamb wave modes from experimental ultrasonic signals.

    • Develop NDE parametric signatures to detect critical damage in advance and predict future failure in composite materials with various different ply orientations.

  • Research Interests

    • Health monitoring and life prediction technology in advanced engineering applications, including for composite materials and additive manufacturing components.

    • Acoustic emission, wave propagation and ultrasonic testing technology, and related analysis methods, in complex geometries and anisotropic materials.

Graduate Research Assistant

Center for Advanced Automotive Research
Virginia Tech Transportation Institute, Virginia Tech.
Jan 2011 to May 2016.

  • Relevant Skills: MATLAB, Mercurial, SQL, database handling, technical writing. Applying data processing and computer programming skills to a wide variety of research problems in transportation safety, human factors engineering and connected vehicle systems.

  • Connected Vehicles: Performed predictive modeling and data analysis, to identify root causes of issues with the implementation of next-generation Vehicle-to-Vehicle communication and crash-avoidance systems, using MATLAB and other proprietory in-house software.

  • Sensor Fusion: Assessed possible implementions of dead reckoning and sensor fusion applications using vehicle-mounted Inertial Measurement Units (IMUs). Implemented adaptive digital filters for noise reduction and code for data accuracy using sensor fusion.

  • Gap Acceptance: Characterized and interpreted driver preferences about choosing gaps in traffic for merging. Designed video data reduction and data analysis protocols to study and time traffic patterns at intersections. Performed data analysis and visualization of results.

  • Turn behavior: Modeled speed and path of vehicles turning through intersections, based on movement and geometry parameters, to help with crash reconstructions. Studied driver behavior during left turns in presence of oncoming vehicles at different distance ranges.

  • Authorship: Authored and co-authored project final reports, research proposals and white papers. Revamped and modernized, then contributed to and maintained, the VTTI central MATLAB code repository (Funnel). Wrote documentation for using MATLAB and Mercurial with VTTI systems.

Publications and Presentations

Journal Articles

  • Arnab Gupta and Dr. John Duke, Jr., Early Detection of Critical Damage in Composite Materials Using Simulated Acoustic Emission, manuscript to be submitted for peer-review and publication.

  • Arnab Gupta and Dr. John Duke, Jr., Identifying the Arrival of Extensional and Flexural Wave Modes Using Wavelet Decomposition of Ultrasonic Signals, Ultrasonics, Jan 2018, Vol. 82, pp. 261-271, doi: 10.1016/j.ultras.2017.09.008.

  • Arnab Gupta and Dr. John Duke, Jr., Characterizing Damage Development in Crossply Laminates Using Simulated Acoustic Emission, Materials Evaluation, April 2012, Vol. 70, No. 4, pp. 461-469.

Conference Proceeding

  • Arnab Gupta and Dr. John Duke, Jr., Detecting Damage Transitions in Laminated Composites using Acoustic Emission, Proceedings of the 13th International Symposium on Nondestructive Characterization of Materials (NDCM-XIII), Le Mans, France, 2012. (PDF)

Conference Presentations

  • Arnab Gupta and Dr. John Duke, Jr., Tracking Progressive Damage Development in Composite Materials, presented at the 23rd Annual ASNT Research Symposium and Spring Conference, Minneapolis, MN, Mar 2014.

  • Arnab Gupta and Dr. John Duke, Jr., Detecting Damage Transitions in Laminated Composites using Acoustic Emission, presented at the 12th International Symposium on Nondestructive Characterization of Materials (NDCM-XII), Blacksburg, VA, June 2011. (PDF, ~25MB)

  • Arnab Gupta and Dr. John Duke, Jr., Characterizing Damage Development in Cross-Ply Laminates Using Acoustic Emission, presented at the 20th Annual ASNT Research Symposium and Spring Conference, San Francisco, CA, Mar 2011.

  • Dr. John Duke, Jr., Douglas Harold and Arnab Gupta, Assessment of Service-induced Damage for Sustainment of Composite Material Structures, presented at the 19th Annual ASNT Research Symposium, Williamsburg, VA, Mar 2010.

  • Arnab Gupta and Dr. John Duke, Jr., Assessing Service-induced Mechanical Deterioration of Aircraft Composite Materials Using Deterioration-induced Wave Propagation, presented at the 2009 Joint ASCE-ASME-SES Conference on Mechanics and Materials, Blacksburg, VA.

  • Arnab Gupta and Dr. John Duke, Jr., Detecting Fiber Breaks in Composite Materials: Modeling and Experiment, presented at the 18th Annual ASNT Research Symposium and Spring Conference, St. Louis, MO, Mar 2009.

Skills

  • Research. Experienced in data and statistical analysis, signal processing, database handling, engineering laboratory work and mechanical testing experiments and computer programming.
  • Programming. MATLAB/Octave, Python, Mathematica, C/C++, Object Oriented Programming (OOP), Shell-Scripting.
  • Software. SQL, HTML5 and CSS3, LaTeX and BibTeX, version control systems such as Mercurial. Familiar with image editing and usual Windows and Mac software.
  • Operating Systems. macOS, Windows, Unix.
  • Photography. Received five FIAP (Fédération Internationale de l’Art Photographique) Acceptances at two international photography contests at Linz, Austria, and an Acceptance at Moscow International Photo Awards. Formerly, member of Jadavpur University Photographic Club. Select photos have been on public exhibition at Kolkata, India and Linz, Austria.

Graduate Coursework

  • Continuum Mechanics
  • Composite Analysis
  • Wave Propagation in Solids
  • Mechanics of Composite Materials
  • Intro Finite Element Methods
  • Theory of Plates and Shells
  • Statistics in Research
  • Applied Tensor Analysis
  • Digital Signal Processing in Mechanical Measurements
  • Advanced Musculo-Skeletal Biomechanics
  • Mechanical and Structural Vibrations
  • Multiscale Modeling of Damage in Composites

Awards and Grants

  • Pratt Presidential Fellowship from ESM Department, Virginia Tech, 2007-08
  • American Society for Nondestructive Testing (ASNT) Graduate Fellowship, 2008
  • ASNT Graduate Travel Grant for conference presentation, 2009
  • ASNT Graduate Travel Grant for conference presentation, 2011
  • ASNT Graduate Travel Grant for conference presentation, 2014
  • Virginia Tech Graduate Student Assembly (GSA) Travel Grant, 2014

Service

  • Served as panel jury member with the Graduate Honor Society (GHS) at Virginia Tech.
  • Served as reviewer for Society for Automotive Engineers (SAE) technical papers.
  • Served on Graduate School committee to select the Virginia Tech Graduate Student of the Year 2017.
  • Served on committee to identify and nominate the Chief Justice of the Virginia Tech Graduate Honor Society, who was then appointed by the University President.

Teaching Experience

Instructor (serving as Graduate Teaching Assistant)

Engineering Mechanics program, Virginia Tech.
Aug 2007 to Dec 2010;
Jan to May 2017.

  • Instructor of Record for ESM 3064: Mechanical Behavior of Materials lab for 8 semesters and multiple lab sections each semester. Responsible for assessing student performance, grading lab reports and assigning final grades.

  • Provide theoretical foundation for experiments. Help students with conceptual understanding of theory and practice of the experiments. Lead the setting up and running of experiments by students.

  • Mechanical testing experiments involved using, among others, Instron and MTS universal testing machines, different hardness testing machines, and Charpy notch-impact testing machines.