Original scientific paper

Dalibor Sekulić
Dubravka Bjegović
Damir Veža
Nenad Gucunski

Abstract

This paper presents results of experimental investigation of detection limits for „Impact-echo" method, used for the determination of damages in reinforced concrete structures. An experimental reinforced concrete field with embedded damages of different type and size, built in at different depths was designed and manufactured at the Institute IGH in Zagreb. Also, a device named "MECHAHIT" for automatic generation of ball impacts with reproducible contact time and contact force was designed and constructed. Measured re-sponses are processed by different spectral analysis methods. Based on parametric evalu-ation of results, the detection limits are determined. It is shown that the use of "MECHAHIT" device and alternative spectral analysis methods improve signal-to noise ratio, extend de-tection limits and improve the presentantion of the measurements.

Keywords

Hrčak ID:

148809

URI

https://hrcak.srce.hr/148809

Publication date:

1.11.2012.

Article data in other languages: croatian

Visits: 750 *