Strength of wood versus rate of testing
Tóm tắt
Strength of wood is normally measured in ramp load experiments. Experience shows that strength increases
with increasing rate of testing. This feature is considered theoretically in this paper. It is shown that
the influence of testing rate is a phenomenon, which depends on the quality of the considered wood.
Low quality wood shows lesser influence of testing rate. This observation agrees with the well-known statement
made by Borg Madsen that weak wood subjected to a constant load, has a longer lifetime than strong
wood. In general, the influence of testing rate on strength increases with increasing moisture content.
This phenomenon applies irrespective of the considered wood quality such that the above-mentioned order
of magnitude observations between low and high quality wood are kept.
Tài liệu tham khảo
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