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Mączak, Jędrzej
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
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article
Comparative testing of strain gauges and magnetic field measurements of steel structures
Abstract
Monitoring of civil engineering structures is an important issue due to a rapid development of the modern building techniques and growing fatigue wear during utilization of bridges, market halls etc. The complexity and diversity of civil engineering structures impose requirements on the measuring system, which are difficult to be satisfied by a single sensor. As a solution, a complex monitoring system, composed of strain gauges as well as magnetic field sensors is being developed. In the paper the comparative study of different measurement techniques allowing for local deformation measurements will be presented. By measuring the changes in magnetic field of analysed steel structure it is possible to obtain the diagnostic information about the type of strain and stress intensity. In the paper the results of magnetic field measurements are compared to the strain gauge measurements obtained on the laboratory truss test stand.