Sean Berg, Ph.D., P.E., is an Assistant Professor of Mechanical Engineering and currently serves as the Mechanical Engineering Specialist at St. Mary’s University, providing technical and subject matter expertise during the development of the new Mechanical Engineering program. He joined St. Mary’s in 2017 after spending nearly 10 years working as an engineer at such companies as Toyota, Schlumberger, and GE Oil & Gas, where he managed the global engineering analysis division. He is also a licensed professional engineer in Texas and spent time as an engineering consultant at Stress Engineering Services in Houston, providing engineering services to clients in a variety of industries including automotive, oil and gas, power generation, petrochemical and chemical refining, pharmaceuticals, biomechanical and medical devices, tech and electronics, and consumer products. He earned his B.S. and M.S. degrees in Mechanical Engineering from the University of Texas at Austin, and his Ph.D. in Materials Science and Engineering from the University of Houston.
Berg’s research in industry has been in the development and application of analytical methods for evaluating structural integrity using large deformation mechanics accounting for geometric nonlinearity, inelastic deformation and complex contact interaction. This has also included predicting materials failure of pressure vessels constructed of carbon and low alloy steels, aluminum, and nickel-based alloys using elastic-plastic fracture mechanics to model flaw propagation using a thermodynamics approach, and evaluating structural dynamic response using mode-based dynamics and random response analysis to assess damage due to mixed-mode vibration, including acoustic vibrations. He has worked with API subcommittees and industry task groups to incorporate these methods into specifications for structural integrity assessment of high-pressure, high-temperature pressure containing and controlling equipment used in offshore oil and gas applications.
Berg’s most recent research activities have been in the materials science, thermodynamics and electrochemistry of thin-film, and all solid-state flexible and stretchable lithium ion batteries for use in flexible electronics, which include wearable sensors and implantable medical devices. Much of his work has focused on multiphysics modeling of flexible battery materials behavior and predicting battery performance under deformation, in addition to optimization of flexible and stretchable battery design concepts. He has worked on multidisciplinary teams to assemble and successfully test new and novel flexible and stretchable battery designs.
Berg has a wealth of expertise in the application of many current engineering specifications, codes and standards, including ASME Boiler and Pressure Vessel Codes (Section II, Section VIII, Division 1, 2 and 3, Section IX), API 579‐1/ASME FFS‐1 Fitness for Service, API RP 2A-WSD, API 17D, API 16A, API 6A, ISO 13628‐7, NACE MR-0175 and various ASTM specs. He enjoys bringing his experience as a scientific researcher and practicing professional engineer to students in the classroom with real-world examples and approaches to solving a variety of engineering problems using the latest analytical methods.
Berg is a member of several professional societies, including the American Society of Mechanical Engineers, American Petroleum Engineers, Tau Beta Pi (National Engineering Honor Society), and Pi Tau Sigma (Mechanical Engineering Honor Society).
Berg, S., Akturk, A., Kammoun, M., and Ardebili, A., “Flexible Batteries under Extreme Bending: Interfacial Contact Pressure and Conductance,” Extreme Mechanics Letters, Vol. 13, pp. 108-115, 2017.
Kelly, T., Ghadi, B.M., Berg, S., and Ardebili, H., “In Situ Study of Strain-Dependent Ion Conductivity of Stretchable Polyethylene Oxide Electrolyte,” Scientific Reports, 6, pp. 1-9, 2016.
Kammoun, M., Berg, S., and Ardebili, H., “Stretchable Spiral Thin-Film Battery Capable of Out-of-Plane Deformation,” Journal of Power Sources, 332, pp. 406–412, 2016.
Kammoun, M., Berg, S., and Ardebili, H., “Flexible Thin-Film Battery based on Graphene-Oxide Embedded in Solid Polymer Electrolyte. Nanoscale,” 7(41): pp. 17516-17522, 2015.