EDDY-CURRENT SENSORS AND THEIR APPLICATIONS TO FORCE AND STRESS MEASUREMENT IN STEEL REINFORCED CONCRETE

H. C. Schoenekess, W. Ricken, J.-G. Liu, W. -J. Becker

Abstract

The monitoring of bridge constructions can be performed by optimised eddy-current sensors to recognise damages earlier and to reduce rehabilitation expenses. The aim is to measure the coil impedance of an eddy-current sensor positioned close to a pre-stressing cable and to conclude the change of stress in steel of reinforced concrete elements. For this purpose, measurements were taken with specified specimen to investigate the influence from the air gap variation and hysteresis curve.

Keywords: Eddy-current sensor, tensile stress measurement, steel of reinforced concrete elements, parameter optimisation, stress-strain diagram
Download: IMEKO-TC20-2002-001.pdf
DOI: -
IMEKO TC: TC20 - Measurements of Energy and Related Quantities

Event details

Event: Joint International Conference on Force, Mass, Torque, Hardness and Civil Engineering Metrology in the age of globalization
Technical Committee: TC20
Place: Celle, GERMANY
Time: 24 September 2002 - 26 September 2002

Back to the proceedings