MECHANOSORPTIVE DEFORMATION OF DOUGLAS-FIR SPECIMENS UNDER TANGENTIALTENSILE-STRESS DURING MOISTURE ADSORPTION

Authors
WU QL MILOTA MR
Citation
Ql. Wu et Mr. Milota, MECHANOSORPTIVE DEFORMATION OF DOUGLAS-FIR SPECIMENS UNDER TANGENTIALTENSILE-STRESS DURING MOISTURE ADSORPTION, Wood and fiber science, 28(1), 1996, pp. 128-132
Citations number
13
Categorie Soggetti
Materiales Science, Textiles","Materials Science, Paper & Wood",Forestry
Journal title
Wood and fiber science → ACNP
ISSN journal
07356161
Volume
28
Issue
1
Year of publication
1996
Pages
128 - 132
Database
ISI
SICI code
0735-6161(1996)28:1<128:MDODSU>2.0.ZU;2-V
Abstract
Small specimens (3.2-mm thick) of Douglas-fir heartwood were tested fo r mechano-sorptive (MS) deformation in tangential tension during moist ure adsorption. Tests were made at 65.5 degrees C with moisture conten t (MC) changing from 5 to 20% under four levels of stress: 0.276, 0.55 2, 0.827, and 1.24 MPa. The results confirmed that a large MS deformat ion occurs during the first MC increase after the load is applied. In a sorption history of matched loaded and load-free specimens, the MS s train was shown to be proportional to applied stress, and the material parameters describing the interaction of stress and moisture change w ere independent of stress level.