Changgil Lee

Papers

Total Citations

H-Index

About

Changgil Lee is a researcher specializing in nondestructive evaluation (NDE) and structural health monitoring, with a particular focus on the inspection of steel cables in long-span bridge infrastructure. His work sits at the intersection of electromagnetic sensing technologies and robotic inspection systems, addressing one of civil engineering's most pressing safety challenges: detecting hidden damage in critical load-bearing cable members before catastrophic structural failure occurs. Lee's most significant contribution is the development and refinement of magnetic flux leakage (MFL)-based inspection systems integrated with cable-climbing robots, enabling automated, comprehensive assessment of bridge cables that would otherwise be difficult or dangerous to evaluate manually. His 2014 paper on MFL sensing-based steel cable NDE has garnered 56 citations, reflecting strong community recognition of its practical value. Complementing this work, he has also explored elasto-magnetic sensor techniques to assess localized cable damage, broadening the toolkit available to structural engineers and inspectors. Collectively, Lee's research has helped advance automated bridge monitoring toward real-world deployment, providing engineers with reliable, field-applicable methods to identify cross-sectional loss caused by fatigue, wear, and fracture — findings that carry direct implications for public safety and infrastructure longevity.