This paper investigated experimentally the feasibility of estimating stress in prestressing strands using induced magnetic field by an external electromagnet and Villari effect that the permeability of ferromagnetic material varies according to its stress or strain.

• 이정우(한국건설기술연구원, 인프라구조연구실, 전임연구원) | Lee, Jung Woo
• 곽임종(한국건설기술연구원, 인프라구조연구실, 수석연구원) | Kwahk, Im Jongk
• 조창빈(한국건설기술연구원, 인프라구조연구실, 연구위원) | Joh, Changbin 교신저자