Author:
Takahashi C.,Ishimaru Y.,Iida I.,Furuta Y.
Abstract
Abstract
To better understand mechano-sorptive creep, creep
behaviors were compared in wood samples during the
drying process, immediately after drying, and after a long
conditioning under constant humidity and temperature.
Creep was greater in the sample tested immediately after
drying than in the sample conditioned for a long time
under relative humidity equal to that after drying, despite
the fact that these samples had almost the same moisture
content (MC). While the wood that has been moisture-conditioned for a long time is in a stable state, the
wood tested immediately after the drying is presumed to
be in an unstable state. Moreover, creep of the sample
tested during the drying process was greater than that
of the sample tested immediately after the drying. It has
also been found that the instability decreased with time,
indicating that stabilization and destabilization occur
simultaneously during the drying process. In recent studies,
a decrease in the elastic modulus and an increase in
the fluidity of wood immediately after a change in MC or
temperature have been reported. These findings are
attributed to the instability caused by changes in MC or
temperature. Based on the results of the present study
and recent studies, we consider the increase in the fluidity
of wood as the MC changes to be attributable to
instability.
Cited by
35 articles.
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