Detail publikace

Vliv způsobu mechanického zatěžování betonových vzorků na signály elektromagnetické a akustické emise

KOKTAVÝ, B. KOKTAVÝ, P. ŠTEFKOVÁ, M.

Originální název

Vliv způsobu mechanického zatěžování betonových vzorků na signály elektromagnetické a akustické emise

Anglický název

On the effect of mechanical loading method on rectangular concrete specimen electromagnetic and acoustic emission signals

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

čeština

Originální abstrakt

The paper deals with the generation of electromagnetic emission (EME) and acoustic emission (AE) response, which results from the load being applied to rectangular concrete specimens in two different ways. In the first case, the specimen is stressed by a plain pressure exerted by the pressing machine jaws on it. In the second case, rectangular steel blocks of a width of 6 mm are inserted between the specimen and the jaws. Typical EME and AE response waveforms appear not to differ from each other for either of the loading methods. However, a significant difference is observed in the frequency distribution of the time lag of the acoustic signal behind the electromagnetic one. This fact results from the difference in the distance between the crack generation point and the AE pickup device location for the two loading methods. This result is in a good agreement with the theoretic model prediction.

Anglický abstrakt

The paper deals with the generation of electromagnetic emission (EME) and acoustic emission (AE) response, which results from the load being applied to rectangular concrete specimens in two different ways. In the first case, the specimen is stressed by a plain pressure exerted by the pressing machine jaws on it. In the second case, rectangular steel blocks of a width of 6 mm are inserted between the specimen and the jaws. Typical EME and AE response waveforms appear not to differ from each other for either of the loading methods. However, a significant difference is observed in the frequency distribution of the time lag of the acoustic signal behind the electromagnetic one. This fact results from the difference in the distance between the crack generation point and the AE pickup device location for the two loading methods. This result is in a good agreement with the theoretic model prediction.

Klíčová slova

Crack, electric charge, electromagnetic emission, acoustic emission

Klíčová slova v angličtině

Crack, electric charge, electromagnetic emission, acoustic emission

Autoři

KOKTAVÝ, B.; KOKTAVÝ, P.; ŠTEFKOVÁ, M.

Rok RIV

2007

Vydáno

25. 10. 2007

Nakladatel

CERM

Místo

Brno, Česká republika

ISBN

978-80-7204-543-3

Kniha

Experiment 2007

Strany od

211

Strany do

216

Strany počet

6

BibTex

@inproceedings{BUT25518,
  author="Bohumil {Koktavý} and Pavel {Koktavý} and Markéta {Štefková}",
  title="Vliv způsobu mechanického zatěžování betonových vzorků na signály elektromagnetické a akustické emise",
  booktitle="Experiment 2007",
  year="2007",
  pages="211--216",
  publisher="CERM",
  address="Brno, Česká republika",
  isbn="978-80-7204-543-3"
}