Experimental determination of normal modes and damage detection of structures using additional mass

Volume 8, Issue 4, August 2023     |     PP. 149-161      |     PDF (546 K)    |     Pub. Date: December 26, 2023
DOI: 10.54647/cebc560139    43 Downloads     109999 Views  

Author(s)

Vasyl Redchenko, State Road Research Institute" ("DerzhdorNDI" SE), Ukraine

Abstract
The article presents a method of experimentally determining the ordinates of the natural forms of oscillations of bridges. The method is to add a small amount of mass to the structure and measure the change in natural frequencies. The theoretical rationale and results of a number of experiments are outlined. The accuracy of the determination of the ordinates of the natural forms of oscillations makes it possible to detect not only the appearance of a certain defect, but also its position. this method implementation requires a small number of primary transducers (sensors); so, to determine individual natural forms only one sensor is needed. You can use all types of sensors that enable obtaining vibrorecords of free vibrations of the structure.

Keywords
bridges, dynamic test, natural forms, defect, technical condition

Cite this paper
Vasyl Redchenko, Experimental determination of normal modes and damage detection of structures using additional mass , SCIREA Journal of Civil Engineering and Building Construction . Volume 8, Issue 4, August 2023 | PP. 149-161. 10.54647/cebc560139

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