Measurement of the shear modulus of wood by the square-plate twist method
- 1 August 2006
- journal article
- Published by Walter de Gruyter GmbH in Holzforschung
- Vol. 60 (5), 543-548
- https://doi.org/10.1515/hf.2006.090
Abstract
In this research, square-plate twist test methods for obtaining the shear modulus of wood were examined. Square plates of western hemlock (Tsuga heterophylla Sarg.) were used as specimens. Twist tests were conducted according to three different methods for various length/thickness and span/plate diagonal ratios, and the shear modulus corresponding to each test condition was obtained. To examine the validity of shear modulus obtained by these tests, asymmetric four-point bending tests and finite element calculations were independently conducted and the results were compared. Specimens had a length/thickness ratio greater than 47 and were supported at two or three points close to each corner while applying a load to the remaining corner. Under these conditions, the shear modulus could be properly obtained over a wide range of span/plate diagonal ratios.Keywords
This publication has 12 references indexed in Scilit:
- Examination of the 4-ENF test for measuring the mode III R-curve of woodEngineering Fracture Mechanics, 2006
- Measurement of the shearing properties of wood by in-plane shear test using a thin specimenWood Science and Technology, 2005
- Estimation of shear moduli of wood by quasi-simple shear testsJournal of Wood Science, 2003
- Experimental Evaluation of the Torsion Test for Determining Shear Strength of Structural LumberJournal of Testing and Evaluation, 2002
- Measurement of the shear modulus of wood by asymmetric four-point bending testsJournal of Wood Science, 2002
- Accuracy of shear properties of wood obtained by simplified Iosipescu shear testJournal of Wood Science, 2000
- An Analysis of Rolling Shear of Spruce Wood by the Iosipescu MethodHolzforschung, 2000
- Estimation of the shear strength of wood by uniaxial-tension tests of off-axis specimensJournal of Wood Science, 2000
- Further developments in testing and analysis of the plate twist test for in-plane shear modulus measurementsComposites Part A: Applied Science and Manufacturing, 1996
- An Edge Crack Torsion Method for Mode III Delamination Fracture TestingJournal of Composites Technology and Research, 1993