Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2002.11a
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- Pages.363.2-363
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- 2002
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- 1598-2548(pISSN)
An Enhancement of Multi-Dof Frequency Response Spectrum from Impact Hammer Testing
충격 햄머 실험에서 다자유도 주파수 응답 스펙트럼의 개선
- Ahn, Se-Jin (Busan National University) ;
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Jeong, Weui-Bong
(Busan National University)
- Published : 2002.11.01
Abstract
The spectrum of impulse response signal from an impulse hammer testing is widely used to obtain frequency response function(FRF) of the structure. However the FRFs obtained from impact hammer testing have not only leakage errors but also finite record length errors when the record length for the signal processing is not sufficiently long. The errors cannot be removed with the conventional signal analyzer which treats the signals as if they are always steady and periodic. (omitted)
Keywords
- Impact Hammer Test;
- Impulse Response Spectrum;
- Frequency Response Function;
- Record Length;
- Leakage Error;
- Finite Record Length Error;
- Optimization Method