Detail publikace

A Comparison of AE Sensor Calibration Methods

KEPRT, J. BENEŠ, P.

Originální název

A Comparison of AE Sensor Calibration Methods

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The paper reviews the background of the primary calibration of acoustic emission (AE) sensors and the determination of uncertainty in the calibration. The main sources of uncertainty in practical usage of calibration results are discussed. The comparison of the results of the reciprocity primary calibration, step-force and reciprocity calibration with broadband-pulse excitation method is presented. The shape of calibration characteristics corresponds well up to 300 kHz. The calculation of the uncertainty in all the calibration methods is described. The problem of propagation of uncertainty in the fast Fourier algorithm was solved. Uncertainty of measurement by primary calibration is determined and the influence of selected sources of uncertainty for each used method of calibration is presented and practically measured results are discussed. Piezoelectric AE sensor PAC UT1000 was used as the sensor under test. The big influence on uncertainty in calibrations was the influence of remounting sensors and influence of precision of measuring device. This influence is possible to suppress by correct and precise mounting of the sensors and using of more accurate measuring device with high resolution.

Klíčová slova

AE sensor calibration, Reciprocity calibration, Step force calibration, Uncertainty

Autoři

KEPRT, J.; BENEŠ, P.

Rok RIV

2008

Vydáno

1. 12. 2008

Nakladatel

Acoustics Emission Group Encino

Místo

Encino, CA USA

ISSN

0730-0050

Periodikum

Journal of Acoustic Emission

Ročník

2008

Číslo

26

Stát

Spojené státy americké

Strany od

60

Strany do

71

Strany počet

11

BibTex

@article{BUT48954,
  author="Jiří {Keprt} and Petr {Beneš}",
  title="A Comparison of AE Sensor Calibration Methods",
  journal="Journal of Acoustic Emission",
  year="2008",
  volume="2008",
  number="26",
  pages="60--71",
  issn="0730-0050"
}