Naslov
EKSPERIMENTALNO ODREĐIVANJE GRANICA DETEKCIJE „IMPACT - ECHO“ METODE
(EXPERIMENTAL DETERMINATION of DETECTION LIMITS of IMPACT ECHO TEST METHOD)

Autori
Sekulić, Dalibor ; Bjegović, Dubravka ; Veža, Damir ; Gucunski, Nenad

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
Matest 2011 International Conference 2011.11.02 - 2011.11.05 Split, Croatia

Mjesto i datum
Split, Hrvatska, 02.11.2011. - 05.11.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
IE metoda; nerazorna ispitivanja; armiranobetonske konstrukcije; vjerojatnost detekcije; POD model
(IE method; non-destructive testing; reinforced concrete structures; detection probability; POD model)

Sažetak
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 responses are processed by different spectral analysis methods. Based on parametric evaluation 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 detection limits and improve the presentation of the measurements.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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