Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Propagation Characteristics of High-frequency Waves in an Elastic Waveguide

탄성 도파봉에서 고주파수 파동의 전파 특성

  • 이정구 (숭실대학교 대학원 기계공학과) ;
  • 김진오 (숭실대학교 공과대학 기계공학과)
  • Received : 2010.06.25
  • Accepted : 2010.08.12
  • Published : 2010.09.20
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Abstract

The paper presents a theoretical analysis on the propagation characteristics of the high-frequency wave in an elastic waveguide whose diameter is less than or similar to the wavelength. The theoretical results were verified by comparing them with the numerical results obtained by the boundary-element method. The ratio of the waveguide diameter to the wavelength affects the number of the existing wavenumber, and thus it affects the propagation characteristics. In the media with attenuation, the trend is similar to that in the media without attenuation except the decreasing amplitude.

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References

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