Damping characteristics of wood
2003
Csoka, L. (Nyugat-Magyarorszagi Egyetem, Sopron (Hungary))
This experimental work described in this article was aimed at measuring the logarithmic decrement of wood and non-wood materials. The vibrational characteristics of wood were measured along the grain FFT analyser system, using excitation signals in the 60 to 4100 Hz frequency range. The temperature and moisture content conditions varied between minus 20 degrees and 90 C degrees and 0 percent to 100 percent, respectively. Experimental results indicate that the excitation frequency does not seem to affect the logarithmic decrement, while temperature and moisture content influence it significantly
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