Il Sang Ahn

Ahn Il Sang

Education

  • B. S. Department of Civil Engineering, Seoul National University, Seoul, Korea, 1991.
  • M. S. Department of Civil Engineering, Seoul National University, Seoul, Korea, 1993.
  • Ph.D. Department of Civil, Structural and Environmental Engineering, University at Buffalo,
    2005.

Experience Highlights

  • Assistant Professor (2014 – Present)
    Department of Civil and Environmental Engineering, University of Alaska Fairbanks
  • Researcher and Lecturer (2011 – 2014)
    Department of Civil and Environmental Engineering, University of California – Davis
  • Research Scientist and Lecturer (2008 – 2011)
    Department of Civil, Structural and Environmental Engineering, University at Buffalo
  • Post-Doctoral Research Associate (2005 – 2007)
    Department of Civil, Structural and Environmental Engineering, University at Buffalo

Teaching Experiences

  • ES 331: Mechanics of Materials (3 credits undergraduate course), spring 2016
  • ES 209: Statics (3 credits undergraduate course), fall 2015
  • CE F433: Reinforced Concrete Design (3 credits undergraduate course), spring 2015, spring 2016
  • ENG 104: Mechanics of Materials (4 credits undergraduate course), summer 2013
  • EAS 208: Dynamics (3 credit undergraduate course), spring 2010, spring 2011
  • CIE 508: Probabilistic Analysis and Design (3 credit graduate course), fall 2009
  • CIE 527: Design and Construction of Structural Systems (3 credit graduate bridge design course),
  • fall 2005

Selected Research Projects

  • Retaining Wall Shake Table Test and Design using Tire Derived Aggregates as Backfill
    University of California – Davis, Jan. 2012 – May 2014
  • Accelerated Bridge Construction in Seismic Regions.
    University at Buffalo, Jan. 2005 – Nov. 2011
  • Effective Slab Width for Composite Steel Bridge Members (NCHRP 12-58).
    University at Buffalo, Aug. 2001 – Dec.2004
  • Survey of Post-Earthquake Damage Detection Techniques for Hospital Facilities.
    University at Buffalo, Jan. 1999 – Dec. 2000
  • Nonlinear Model-Based System Identification for Lead-Rubber Bearings of Cazenovia Creek Southbound Bridge using Four Quick-Release Field Experiment Data Sets.
    University at Buffalo, Jun. 1999 – Aug. 2000
  • Development of Bridge Management Systems
    Korea Institute of Construction Technology, Apr. 1994 – Aug. 1998

Licenses

  • Professional Engineer C75209, California

Professional Affiliations

  • American Society of Civil Engineering (ASCE), Member.
  • Korean Society of Civil Engineering (KSCE), Associate Member.

Selected Publications

  • Ahn, I.-S., S.S. Chen, G.F. Dargush, and L. Cheng, Dynamic Ratcheting in Single Degree-of-Freedom Hysteretic Damping Systems under Earthquakes, Engineering Structures, Vol. 100, pp. 665-673, 2015.
  • Ahn, I.-S., L. Cheng, P.J. Fox, J. Wright, S. Patenaude, and B. Fujii, Material Properties of Large-Size Tire Derived Aggregate for Civil Engineering Applications, Journal of Materials in CivilEngineering – ASCE, Vol. 27, No.9, 04014258, 2014.
  • Ahn, I.-S. and L. Cheng, Tire Derived Aggregate for Retaining Wall Backfill under Earthquake Loading, Construction & Building Materials, Vol. 57, pp. 105-116, 2014.
  • Ahn, I.-S.,Y.H. Park, S.S. Chen, and J. O’Connor, Live Load Distribution of a Hybrid FRP Composite Superstructure on the Basis of Field Test, Transportation Research Record, Journal of the Transportation Research Board, No. 2313, pp.189-197, 2012.
  • Ahn, I.-S., S.S. Chen, and G.F. Dargush, Iterated Maps Approach for Dynamic Ratchetting in SDOF Hysteretic Damping Systems, Journal of Sound and Vibration, Vol. 323, No. 3-5, pp.896-909, 2009.
  • Ahn, I.-S. and S.S. Chen, Nonlinear Model-Based System Identification of Lead-Rubber Bearings. Journal of Structural Engineering-ASCE. Vol. 134, No.2, pp. 318-328. 2008.
  • Aref, A.J., M. Chiewanichakorn, S. S. Chen, and I.-S. Ahn, Effective Slab Width Definition for Negative Moment Regions of Composite Bridges, Journal of Bridge Engineering-ASCE, Vol. 12, No.3, pp.339-349, 2007.
  • S.S. Chen, A.J. Aref, M. Chiewanichakorn, I.-S. Ahn, Proposed Effective Width Criteria for Composite Bridge Girders, Journal of Bridge Engineering-ASCE, Vol. 12, No.3, pp.325-338, 2007.
  • Ou, Y.-C., M. Chiewanichakorn, I.-S. Ahn, A. J. Aref, S. S. Chen, A. Filiatrault, and G. C. Lee, Cyclic Performance of Precast Concrete Segmental Bridge Columns, Design of Structures 2006, Transportation Research Record, Journal of the Transportation Research Board, No. 1976. pp. 66-74. 2006.