[Brief Narratives]

Dr. Youngguk Seo was a research associate in Department of Civil Engineering at North Carolina State University. He joined NC State University in January 8th, 2000 to pursue Ph.D. degree in Civil Engineering. Since then, he has worked on a few research projects that may result in the development of performance prediction models of HMAs and their application for asphalt concrete pavement. One of his research interests is an application of experimental mechanics.

[ Education ] [ Publications ] [ Course Materials ] [ Contact ] [ Professional Appointments ] [ Research Projects in Korea ] [ Works in NCSU ] [ Honors and Awards ] [ Course Works ]

Education

Ph.D., Civil Engineering, August 2003

North Carolina State University, NC, USA

Advisor: Prof. Y. Richard Kim

Dissertation title: A Comprehensive Study of Crack Growth in Asphalt Concrete using Digital Image Correlation

Seoul National University, Seoul, Korea

Advisor: Prof. Sung-Pil Chang

Thesis title: A Dynamic Analysis of Curved Girder Bridge subject to 3-Dimensional Vehicular Loads

The University of Seoul, Seoul, Korea

(Graduated with the highest honor)

Publications

• Y. R. Kim, Y. Seo, Mark King, and M. Momen, “Dynamic Modulus Testing of Asphalt Concrete in Indirect Tension Mode,” TRB 2004.

• Y. Seo; Y. R. Kim, “The Mechanical Testing of Asphalt Concrete Mixtures using Digital Image Correlation,” RILEM 2004.

• Y. Seo; Y. R. Kim; R. A. Schapery; M. W. Witczak; R. Bonaquist, “A Study of Crack-Tip Deformation and Crack Growth in Asphalt Concrete Using Fracture Mechanics, ” Journal of Association of Asphalt Paving Technologists, AAPT, 2004.

• Y. Seo; Y. R. Kim; M. W. Witczak; R. Bonaquist, “Application of the Digital Image Correlation to the Mechanical Testing of Asphalt-Aggregate Mixtures,” Transportation Research Board, National Research Council, Washington, D.C., 2002.

• Y. Y. Jung; J. S. Cho; Y. Seo, “Linear Analysis of Suspension Bridges,” KSCE, 1999.

• Y. Seo; Y. Y. Jung, “Modal Analysis of Suspension Bridges Subject to Ground Motions,” COSEIK, 1999.

• Y. Seo; S. D. Kwon, “Dynamic Modeling of Bridge Subject to Moving Vehicular Loads,” KSCE, 1998.

Professional Appointments

• Impact of Price Reductions on the Long-Term Pavement Performance of HMA Mixes in North Carolina

• Development of Visco-Elasto-Plastic Continuum Damage Model for Asphalt-Aggregate Mixtures

• Steel Structures (Undergraduate course on Steel Structures)

Research Projects in Korea (1996 - 1999)

• Development of Ultrasonic Sensor for Nondestructive Evaluation of Fracture Critical Steel Bridges (Cooperative research with MIT, 1996~1998) : The objective of the research was to develop ultrasonic phased array transducers and associated techniques, which may be suitable for inspecting fracture-critical steel bridges.

• A Study on the Fatigue Behavior of Steel Deck Bridge (1998~1999) : This project was directed at structural behavior of steel deck bridge under dynamic loads, including considerations of fatigue failure mode of welding details through full-scale fatigue test. I joined this project as an inspector for failure cracks on bridge members.

• Development of Dynamic Vibration Absorber for Suppressing Traffic-induced Bridge Vibration(1998~1999) : This project proposed that installing lead shear damper on the flange of steel bridge could control excessive vibration appropriately, and we also measured both acceleration and deflection responses of each girder that showed us about 20~30% reduction in deflection after damper installment. I participated in this project as an equipment operator and programmer for simulation.

• A Study of Structural Analysis and Vibration Control for the Design and Construction of Suspension Bridge (1998~1999) : A program, DACS(Design and Analysis of Cable-Supported bridge) was developed for design and construction of suspension bridge. This project suggested new approach that satisfy initial equilibrium state of the sag of main cable and the camber of stiffening girder without any nonlinear iteration processing. In that program, I built up modal analysis module for earthquake analysis.

Research Projects in the US (2000 - 2004)

• Development of Visco-Elasto-Plastic Continuum Damage Model for Asphalt-Aggregate Mixtures (March 1, 2000 - December 31, 2001) : Based on an extensive study of existing constitutive models of asphalt concrete and other particular composite materials, the research team has selected two candidate models for further calibration in Task F.4. The experimental design for Task F.4 has been developed to perform an in-depth evaluation of the two candidate models from which one model will be selected for future continuing evaluation, enhancement and implementation. (selected from a research proposal to ASU)

• Impact of Price Reductions on the Long-Term Pavement Performance of HMA Mixes in North Carolina (July 1, 2001 - June 30, 2003)

Honors and Awards

1989 - 1992: Full Honors Scholarship, The University of Seoul, Seoul, Korea

January 2001: KOTTA Travel Grant 2001

July 2001: 2002 AAPT Scholarship awarded by the Association of Asphalt Paving Technologists

Course works taken at graduate schools

Mechanics

Applied mathematics & Numerical methods

Pavement design and application

Contact Information

Office: +82-31-371-3368, Pavement Research Group, HTTI, Korea Highway Corporation

Cell Phone: +82-010-6214-2316

E-mail: seoyg89@freeway.co.kr

Course Materials