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Draft:Gilbert Hegemier

Gilbert Arthur Hegemier
ASME Fellow
NationalityAmerican
Alma materCalifornia Institute of Technology (Ph.D., M.S.)
Known forRetrofitting techniques for earthquake safety, and the use of fiber-reinforced composites in construction
Awards
  • The Revelle Medal (2022)
  • CERF Charles Pankow Award for Innovation (1996)
Scientific career
FieldsStructural engineering, earthquake engineering
InstitutionsUniversity of California, San Diego
ThesisStability of Thin Cylindrical Shells Subjected to a Class of Axially Symmetric Moving Loads (1964)
Doctoral advisorErnest Edwin Sechler
Other academic advisorsJames. K. Knowles
Years active1964-present
TitleProfessor Emeritus

Gilbert Arthur Hegemier is an American structural engineer, aerospace engineer, inventor, and academic. Hegemier is Professor Emeritus at the University of California, San Diego (UCSD)'s Jacobs School of Engineering. He is known for his contributions to earthquake engineering, particularly in the development of retrofitting techniques for bridges, roadways, and buildings to enhance public safety and structural performance. He is a member of the American Institute of Aeronautics and Astronautics, a Member of the Earthquake Engineering Research Institute (M.EERI), and has been a fellow of the American Society of Mechanical Engineers since 1997.

Biography

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Hegemier holds an M.S. (1960) and a Ph.D. (1964) in Solid Mechanics and Structures from the California Institute of Technology. Early before his career in academia, Hegemier worked as a mechanical engineer for TRW Systems Space Technology Lab, the National Engineering Science Company, and the Naval Ordinance Laboratory.

After the devastating 1971 San Fernando Valley and 1972 Nicaragua earthquakes, Hegemier shifted his focus from aerospace engineering to earthquake safety.[1] He played a pivotal role at UCSD, leading a team that developed and tested full-scale bridge column retrofit systems. These innovations were crucial during the 1994 Los Angeles earthquake, proving effective as they significantly reduced damage to retrofitted bridges. Hegemier's work extends to using lightweight fiber-reinforced composites for infrastructure repair and blast mitigation to protect critical structures from terrorist attacks. He holds patents,[2][3][4] is the recipient of numerous awards, including the 2022 Revelle Medal.[5][6] Hegemier has been a fellow of the American Society of Mechanical Engineers since 1997,[7] and a Member of the Earthquake Engineering Research Institute (M.EERI). He was elected to the Golden Key International Honour Society in 1995. Hegemier is director of the Charles Lee Powell Laboratories at UCSD.[8]

Hegemier was the Principal Investigator for an NSF-funded project to equip the new Structural Systems Laboratory at UCSD, starting in 1986. This project, which had a budget of $1,205,700, focused on establishing a facility capable of full-scale experimental testing of buildings up to five stories. The lab aimed to serve as a hub for the Structural Engineering Program at UCSD, support international collaborations, and foster interactions between academia and the industry​.[9][10]

Hegemier is the Chairman of Composite Solutions Inc.[11][12]

Hegemier was tenured to full Professor of applied mechanics at UCSD.[13] In 2007, He became the Chair of the Department of Structural Engineering.

Selected publications

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Review literature articles

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  • Hegemier, G. A., & Prager, W. (1969). On michell trusses. International Journal of Mechanical Sciences, 11(2), 209-215.
  • Hegemier, G. A., Gurtman, G. A., & Nayfeh, A. H. (1973). A continuum mixture theory of wave propagation in laminated and fiber reinforced composites. International Journal of Solids and Structures, 9(3), 395-414.
  • Hegemier, G. A., & Nair, S. (1977). A nonlinear dynamical theory for heterogeneous, anisotropic, elasticrods. AIAA Journal, 15(1), 8-15.
  • Read, H., & Hegemier, G. A. (1984). Strain softening of rock, soil and concrete—a review article. Mechanics of materials, 3(4), 271-294.
  • Hegemier, G. A., Murakami, H., & Hageman, L. J. (1985). On tension stiffening in reinforced concrete. Mechanics of Materials, 4(2), 161-179.
  • Hegemier, G. A., & Read, H. E. (1985). On deformation and failure of brittle solids: Some outstanding issues. Mechanics of Materials, 4(3-4), 215-259.
  • Seible, F., Priestley, M. N., Hegemier, G. A., & Innamorato, D. (1997). Seismic retrofit of RC columns with continuous carbon fiber jackets. Journal of composites for construction, 1(2), 52-62.
  • Cheng, L., Zhao, L., Karbhari, V. M., Hegemier, G. A., & Seible, F. (2005). Assessment of a steel-free fiber reinforced polymer-composite modular bridge system. Journal of Structural Engineering, 131(3), 498-506.
  • Lee, C. S., & Hegemier, G. A. (2009). Model of FRP-confined concrete cylinders in axial compression. Journal of Composites for Construction, 13(5), 442-454.
  • Lee, C. S., & Hegemier, G. A. (2009). Model of FRP-confined concrete cylinders in axial compression. Journal of Composites for Construction, 13(5), 442-454.
  • Rodriguez-Nikl, T., Lee, C. S., Hegemier, G. A., & Seible, F. (2012). Experimental performance of concrete columns with composite jackets under blast loading. Journal of Structural Engineering, 138(1), 81-89.

Awards

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  • The Revelle Medal (2022).[5][6]

References

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  1. ^ "Earthquake: Fears grow over structural safety of Californian freeways". New Scientist. 'The situation is both new and serious,' Gilbert Hegemier, director of structural systems laboratory at the University of California at San Diego, told New Scientist this week. 'We will not know how serious until the inspections of bridges and freeways are made and design tests are carried out in research laboratories.
  2. ^ US6237292B1, Hegemier, Gilbert A. & Seible, Frieder, "Reinforcement of cementitious walls to resist seismic forces", issued 2001-05-29 
  3. ^ JP2007247401A, Seible, Freider; セイブル、, フライダー & Hegemier, Gilbert A. et al., "弾性繊維補強複合構造部材", issued 2007-09-27 
  4. ^ US20150322686A1, HARPER, Jordan; Williams, Brian & WADE, Carl Allen et al., "Blast resistant structure", issued 2015-11-12 
  5. ^ a b UC San Diego (2022-11-18). 2022 Revelle Medalist: Gilbert Hegemier. Retrieved 2024-06-25 – via YouTube.
  6. ^ a b "UC San Diego Structural Engineering Gilbert (Gil) Hegemier Awarded Revelle Medal". jacobsschool.ucsd.edu. Retrieved 2024-06-25.
  7. ^ https://www.asme.org/getmedia/fb403911-4485-4a50-8232-3b04ea4ac4c0/Fellows-All-Updated-March-2024.pdf
  8. ^ "Three-Story Structure Slammed in Magnitude 8 Earthquake on Shake Table". phys.org. "This is a landmark test that will enable a very fast and economically advantageous high technology construction method to be used in seismically active regions of the United States," said Gilbert A. Hegemier, director of UC San Diego's Powell Structural Research Laboratories, and professor and chair of the Jacobs School of Engineering's Department of Structural Engineering.
  9. ^ "NSF Award Search: Award # 8520685 - Equipment Request for the UCSD Structural Systems Laboratory". www.nsf.gov. Retrieved 2024-06-25.
  10. ^ Hegemier, Gilbert; Seible, Frieder. "Equipment Request for the UCSD Structural Systems Laboratory".
  11. ^ "Gilbert A Hegemier, Composite Solutions Inc Profile and Biography". www.bloomberg.com.
  12. ^ https://apps.dtic.mil/sti/tr/pdf/ADA397336.pdf
  13. ^ Stix, Gary (1993). "Concrete Solutions". Scientific American. 268 (4): 102–112. ISSN 0036-8733. Gilbert A. Hegemier, a U.C.S.D. professor of applied mechanics, said the approximately $50 million needed to build the bridge would also test concepts that could be exploited in the repair of existing structures and in the development of manufacturing techniques to make Lego-like construction a reality. "The hand-assembly methods for making composites for Stealth aircraft need to be automated," Hegemier says.
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