Detail publikace

Measurement of Material Properties Using Deterministic White Noise

CARBOL, L. KUSÁK, I. MARTINEK, J.

Originální název

Measurement of Material Properties Using Deterministic White Noise

Anglický název

Measurement of Material Properties Using Deterministic White Noise

Jazyk

en

Originální abstrakt

This paper describes a comparison of two acoustic non-destructive methods for measurement of Young's modulus of axially vibrating bars made of various metals. The first method is a classical impact-echo with frequency analysis and the second method is based on deterministic white noise MLS generator. Both methods give comparable results but excitation by white noise appears to be more sensitive and can reveal higher harmonics which would otherwise be damped very quickly. Another advantage of white noise is the possibility of continuous automated measurement. On the other hand, the transducer fixed at the specimen presents an added mass which lowers the frequencies and this effect must be taken into account.

Anglický abstrakt

This paper describes a comparison of two acoustic non-destructive methods for measurement of Young's modulus of axially vibrating bars made of various metals. The first method is a classical impact-echo with frequency analysis and the second method is based on deterministic white noise MLS generator. Both methods give comparable results but excitation by white noise appears to be more sensitive and can reveal higher harmonics which would otherwise be damped very quickly. Another advantage of white noise is the possibility of continuous automated measurement. On the other hand, the transducer fixed at the specimen presents an added mass which lowers the frequencies and this effect must be taken into account.

Dokumenty

BibTex 


@inproceedings{BUT111023,
  author="Ladislav {Carbol} and Ivo {Kusák} and Jan {Martinek}",
  title="Measurement of Material Properties Using Deterministic White Noise",
  annote="This paper describes a comparison of two acoustic non-destructive methods for measurement of Young's modulus of axially vibrating bars made of various metals. The first method is a classical impact-echo with frequency analysis and the second method is based on deterministic white noise MLS generator. Both methods give comparable results but excitation by white noise appears to be more sensitive and can reveal higher harmonics which would otherwise be damped very quickly. Another advantage of white noise is the possibility of continuous automated measurement. On the other hand, the transducer fixed at the specimen presents an added mass which lowers the frequencies and this effect must be taken into account.",
  address="Vysoké učení technické v Brně",
  booktitle="XIth European Conference on NDT",
  chapter="111023",
  howpublished="electronic, physical medium",
  institution="Vysoké učení technické v Brně",
  year="2014",
  month="october",
  pages="1--7",
  publisher="Vysoké učení technické v Brně",
  type="conference paper"
}