Long-term monitoring of strains in a real operation of structures

Vladimir Chmelko, Martin Garan

Abstract

In most of cases the structural condition monitoring allows to receive significant states or values in a real operation of that structure, such as:<br /> - change in value of safety coefficient by reason of arising overload or non-standard operation mode during service<br /> - vibrations increasing by reason of change in toughness of the structure<br /> - increasing of fatigue damage accumulation in a critical point or section by reason of change in variable stress amplitudes<br /> In this paper, there is presented the extended concept of compensation for elimination of unwanted offset change that can appear during long-term monitoring of the strain signal. The method of this compensation is shown and realized for performing the monitoring process on a real structure of pipeline system where as sensors were used the strain gauges.

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DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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