Title :
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
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;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156949
