Publication detail

NONLINEAR ULTRASONIC SPECTROSCOPY OF MAGNESIUM COMPOSITES

TOFEL, P. ŠIKULA, J. TROJANOVÁ, Z.

Original Title

NONLINEAR ULTRASONIC SPECTROSCOPY OF MAGNESIUM COMPOSITES

English Title

NONLINEAR ULTRASONIC SPECTROSCOPY OF MAGNESIUM COMPOSITES

Type

conference paper

Language

en

Original Abstract

We have tested samples from magnesium composites by nonlinear ultrasonic spectroscopy. The samples were fixed on ultrasonic actuator and sensor of acoustic emission by beeswax. The contact quality or defects in sample structure are changing the coefficient of vibration damping. The coefficient of vibration damping is given by width of resonance curve. If we damage the sample, the damping coefficient increases so that width of resonance curve increases too. On the other hand with higher defectiveness of the sample the higher harmonics components are increasing. In this paper, we are investigating the width of resonance curve for three samples from magnesium composite for different exciting frequencies.

English abstract

We have tested samples from magnesium composites by nonlinear ultrasonic spectroscopy. The samples were fixed on ultrasonic actuator and sensor of acoustic emission by beeswax. The contact quality or defects in sample structure are changing the coefficient of vibration damping. The coefficient of vibration damping is given by width of resonance curve. If we damage the sample, the damping coefficient increases so that width of resonance curve increases too. On the other hand with higher defectiveness of the sample the higher harmonics components are increasing. In this paper, we are investigating the width of resonance curve for three samples from magnesium composite for different exciting frequencies.

Keywords

ultrasonic, magnesium composites, damping

RIV year

2007

Released

15.11.2007

Publisher

Ing. Zdeněk Novotný CSc.

Location

Brno, Czech Republic

ISBN

978-80-7355-078-3

Book

NEW TRENDS IN PHYSICS 2007

Edition number

1

Pages from

146

Pages to

149

Pages count

4

BibTex


@inproceedings{BUT28536,
  author="Pavel {Tofel} and Josef {Šikula} and Zuzana {Trojanová}",
  title="NONLINEAR ULTRASONIC SPECTROSCOPY OF MAGNESIUM COMPOSITES",
  annote="We have tested samples from magnesium composites by nonlinear ultrasonic spectroscopy. The samples were fixed on ultrasonic actuator and sensor of acoustic emission by beeswax. The contact quality or defects in sample structure are changing the coefficient of vibration damping. The coefficient of vibration damping is given by width of resonance curve. If we damage the sample, the damping coefficient increases so that width of resonance curve increases too.  On the other hand with higher defectiveness of the sample the higher harmonics components are increasing.  In this paper, we are investigating the width of resonance curve for three samples from magnesium composite for different exciting frequencies.",
  address="Ing. Zdeněk Novotný CSc.",
  booktitle="NEW TRENDS IN PHYSICS 2007",
  chapter="28536",
  institution="Ing. Zdeněk Novotný CSc.",
  year="2007",
  month="november",
  pages="146--149",
  publisher="Ing. Zdeněk Novotný CSc.",
  type="conference paper"
}