Dr Aamir Khokhar A.Khokhar@napier.ac.uk
Lecturer
Shear failure modes of wood under torsional loading
Khokhar, Aamir; Zhang, Johnson
Authors
Prof Johnson Zhang j.zhang@napier.ac.uk
Professor
Abstract
This paper presents details of the experimental investigation that was undertaken to examine the fracture mechanism of wood in shear. Torsion test method was employed to test structural size timber joists until they fractured. The test joists fractured mostly at the middle in shear with cracks propagated towards either supports or edges. In some specimens, cracks started due to shear and then travelled as a tensile failure. Support conditions were found to be important as test clamps were causing the crushing of wood material. Wood defects found to be less effective in triggering the fracture. In many cases, failure cracks were initiated within the clear wood even though a number of large knots were present in test joists. The shear strength and the shear modulus were also determined. A good correlation was found between shear strength and the shear modulus. However, no correlation was seen between shear modulus and modulus of elasticity.
Citation
Khokhar, A., & Zhang, J. (2014, August). Shear failure modes of wood under torsional loading. Presented at World Conference on Timber Engineering, Quebec City, Canada
Presentation Conference Type | Conference Paper (Published) |
---|---|
Conference Name | World Conference on Timber Engineering |
Start Date | Aug 10, 2014 |
End Date | Aug 14, 2014 |
Acceptance Date | Mar 6, 2014 |
Publication Date | Aug 10, 2014 |
Deposit Date | Aug 26, 2020 |
Volume | 1 |
Pages | 428-435 |
Book Title | World Conference on Timber Engineering (WCTE 2014) |
ISBN | 978-1-5108-5820-6 |
Public URL | http://researchrepository.napier.ac.uk/Output/1671069 |
You might also like
Determining the Shear Modulus of Sitka Spruce from Torsion Tests
(2008)
Journal Article
The shear strength and failure modes of timber joists obtained from the torsion test method.
(2010)
Presentation / Conference Contribution
Determination of shear strength of timber joists by torsion testing.
(2009)
Presentation / Conference Contribution
Random acts of elasticity: MoE, G and EN408.
(2009)
Presentation / Conference Contribution
Downloadable Citations
About Edinburgh Napier Research Repository
Administrator e-mail: repository@napier.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search