Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
권호 표지

Vibration and Sound Characteristic of the Chun-cheon Citizen's Bell

춘천시민의 종의 진동 및 음향 특성

  • 김석현 (강원대학교 기계메카트로닉스공학부) ;
  • 김태형 (강원대학교 기계메카트로닉스공학과) ;
  • 김윤호 (강원대학교 기계메카트로닉스공학과) ;
  • 한영호 (춘천시청 문화예술과)
  • Published : 2006.02.28
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Abstract

The Chun-cheon Citizen's Bell was cast in memory of hosting the 2010 world leasure conference and a striking ceremony was held at the city hall on December 31, 2005. In this study, vibration and sound of the bell are measured and the property of the magnificent sound of the bell is scientifically investigated. Frequency components making the sound are identified and how the frequency components decrease with time is observed using waterfall plot(3-dimensional frequency spectrum). Beat characteristics of the hum(1st frequency) and the fundamental(2nd frequency)are examined by experiment. Directivity of the sound radiation of the bell is examined by measuring the vibration and sound in several directions. Duration of the vibration and the sound is estimated using damping ratio.

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