Publication detail

Monitoring of hydraulic machines and hydrodynamic cavitation using acoustic emissions

ZÁVORKA, D.HABÁN, V.

Czech title

Monitorování hydraulických strojů a hydrodynamické kavitace pomocí akustických emisí

English title

Monitoring of hydraulic machines and hydrodynamic cavitation using acoustic emissions

Type

conference paper

Language

en

Original abstract

This paper aims to demonstrate possibilities of acoustic emission as a hydraulic machinery diagnostics tool. Especially for exposing presence of ruptures or cracks in parts of the machine, assuming changes in acoustic signal of the part during its operation. Demonstration is based on series of simple measured experiments, which consist of monitoring the preloaded bolt placed in water stream inside of a pipe to simulate effect of crack size. Outputs are charts with effective values comparing spectrums of each configuration to judge the effects of parameter changes. The methodology of the acoustic emission can also be applied to study hydrodynamic cavitation and its acoustic exhibition.

English abstract

This paper aims to demonstrate possibilities of acoustic emission as a hydraulic machinery diagnostics tool. Especially for exposing presence of ruptures or cracks in parts of the machine, assuming changes in acoustic signal of the part during its operation. Demonstration is based on series of simple measured experiments, which consist of monitoring the preloaded bolt placed in water stream inside of a pipe to simulate effect of crack size. Outputs are charts with effective values comparing spectrums of each configuration to judge the effects of parameter changes. The methodology of the acoustic emission can also be applied to study hydrodynamic cavitation and its acoustic exhibition.

Keywords in English

acoustic emission, Fourier transformation, vibrations

Released

15.08.2018

ISBN

978-0-7354-1716-8

ISSN

1551-7616

Book

37TH MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMODYNAMICS

Volume

2000

Number

020023

Pages from–to

1–4

Pages count

4

BIBTEX


@inproceedings{BUT153397,
  author="Dalibor {Závorka} and Vladimír {Habán},
  title="Monitoring of hydraulic machines and hydrodynamic cavitation using acoustic emissions",
  booktitle="37TH MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMODYNAMICS",
  year="2018",
  volume="2000",
  number="020023",
  month="August",
  pages="1--4",
  isbn="978-0-7354-1716-8",
  issn="1551-7616"
}