An optical method for characterization of basic hygro-mechanical properties of solid wood in tension
Published: 2003
Publication Name: Proceedings of the 8th International IUFRO Wood Drying Conference
Publication URL: https://scholar.google.sk/citations?view_op=view_citation&hl=en&user=AsnSu7cAAAAJ&citation_for_view=AsnSu7cAAAAJ:9yKSN-GCB0IC
Abstract:
A conceptual framework and results of an ongoing research project on the determination of the mechanosorptive properties of solid wood in uni-axial loading are presented. The principal objective of the study was to provide a reliable method to determine the material level mechano-sorptive properties of wood in the parallel-tograin direction. The method also involves determination of free shrinkage and swelling as well as visco-elastic characteristics from reference tests performed on matched specimens. Tensile creep tests in the longitudinal direction at varying climate conditions were performed on small (1 mm x 25 mm x 300 mm) clear specimens of Red spruce (Picea rubra). All tests were conducted in a temperature-controlled environment. During the tests, preconditioned specimens were loaded and exposed to constant and/or cycling relative humidity (RH). Moisture content (MC) changes and the free