Journal of Theoretical
and Applied Mechanics

55, 1, pp. 241-252, Warsaw 2017
DOI: 10.15632/jtam-pl.55.1.241

Experimental validation of the use of energy transfer ratio (ETR) for damage diagnosis of steel-concrete composite beams

Tomasz Wróblewski, Małgorzata Jarosińska, Małgorzata Abramowicz, Stefan Berczyński
The paper presents changes of modal parameters such as natural frequencies, damping ratios
and energy transfer ratios (ETR) following damage of the connection of a steel-concrete
composite beam. Sensitivity analysis of the parameters is conducted both for numerical
simulation and experimental results. The energy transfer ratio ETR is determined: i) for
the whole beam – as a global parameter which can be used for damage detection, ii) for
segments of the beam – as a local parameter which can be used for damage localisation.
Keywords: damage diagnosis, energy transfer ratio (ETR), steel-concrete composite beams