Tensile stress measurement of tendon by means of current applied to the tendon

Author

Son, D. ; Kang, S. ; Joh, C. ; Lee, J.

Author_Institution

Opt. & Sensors Eng., Hannam Univ., Daejeon, South Korea

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Tension measurement of tendon employed in PreStressed Concrete (PSC) bridge is very important for the bridge safety check. For the measurement of tensile stress of the tendon, many different methods such as acoustics, fiber optics, and electro-magnetics are employed. In this work, to measure tensile stress by mean of magnetic method, we have constructed a measuring system. Ac or dc current was applied the 7-strand tendon directly to magnetize circular direction. Tensile stress was applied to the tendon by means of hydraulic piston which can apply force up to 0.3 MN, and 0.5 MN load cell to measure force.

Keywords

bridges (structures); force measurement; reinforced concrete; stress measurement; 7-strand tendon; ac current; bridge safety check; circular direction; dc current; hydraulic piston; magnetic method; prestressed concrete bridge; tensile stress measurement; tension measurement; Acoustic measurements; Current measurement; Magnetic field measurement; Magnetomechanical effects; Stress measurement; Tendons; Tensile stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7156949

Filename

7156949