Wood Science and Technology

, Volume 32, Issue 1, pp 57–70

Experimental indication of interaction between viscoelastic and mechano-sorptive creep

  • A. Hanhijärvi
  • D. Hunt
Originals

DOI: 10.1007/BF00702560

Cite this article as:
Hanhijärvi, A. & Hunt, D. Wood Sci.Technol. (1998) 32: 57. doi:10.1007/BF00702560

Summary

This paper describes the study of possible interactions between the viscoelastic and mechano-sorptive creep inPinus sylvestris. When two periods of constant-moisture creep were separated by a period of mechano-sorptive creep, the expected creep rate during the second viscoelastic period was decreased. A similar effect was observed during creep recovery. These results were taken to indicate an interaction between the two types of creep, although not necessarily a common mechanism. During recovery with uniform moisture cycling, the effects of one extra low and one extra high humidity were observed. The low humidity showed no significant effect, but the high humidity significantly increased the recovery. This was attributed to a parallel effect to that of creep: namely, the creep acceleration that occurs at a higher moisture level than has previously been reached during the test.

Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • A. Hanhijärvi
    • 1
  • D. Hunt
    • 2
  1. 1.VTT Building TechnologyEspooFinland
  2. 2.School of Engineering Systems and DesignSouth Bank UniversityLondonUK

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