Strength of wood versus rate of testing - A theoretical approach

Lauge Fuglsang Nielsen

Research output: Contribution to journalJournal articleResearchpeer-review


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.
Original languageEnglish
JournalHolz Als Roh-und Werkstoff
Issue number3
Pages (from-to)223-229
Publication statusPublished - 2007


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