Skip header and navigation

3 records – page 1 of 1.

Mechanical Properties of Beech CLT

https://research.thinkwood.com/en/permalink/catalogue1526
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Franke, Steffen
Year of Publication
2016
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Beech
Strength
Stiffness
Delamination Tests
Rolling Shear Failure
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 660-666
Summary
The use of relatively new constructions products like Cross laminated timber (CLT) is increasing significantly. It is planned to extend the production of CLT by producing them out of beech or of beech and spruce in combination as hybrid product. The objective is to provide high performing materials which compensate weak points in soft wood products. In order to use and implement the product, the mechanical behaviour of a CLT plate of beech were investigated. The potential of beech is shown in terms of known strength values. Experimental tests for the evaluation of the strength and stiffness values for beech CLT for different situations as well as delamination tests were performed. Failure cases of the mechanical tests are presented and discussed where the rolling shear failure was in major focus for the discussion.
Online Access
Free
Resource Link
Less detail

Mechanical Properties of Innovative, Multi-Layer Composite Laminated Panels

https://research.thinkwood.com/en/permalink/catalogue2178
Year of Publication
2018
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)

Shear Stress and Interlaminar Shear Strength Tests of Cross-Laminated Timber Beams

https://research.thinkwood.com/en/permalink/catalogue1793
Year of Publication
2018
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Beams
Author
Lu, Yao
Xie, Wenbo
Wang, Zheng
Gao, Zizhen
Publisher
North Carolina State University
Year of Publication
2018
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Shear Stresses
Elastic Properties
Short Span
Three Point Bending Test
Rolling Shear Failure
Interlaminar Shear Strength Tests
Bending Movement
Shear Force
Three-Layer
Five-Layer
Seven-Layer
Research Status
Complete
Series
BioResources
Summary
The interlaminar shear stresses of the three-layer, five-layer, and seven-layer cross laminated timber (CLT) and those of the oriented laminated beams were calculated according to Hooke's law and the differential relationship between the beam bending moment and shear force. The interlaminar and maximum shear stresses of the CLT beam are related to the number of CLT layers and to the elastic modulus ratio EL/ET (or EL/ER) of the parallel and perpendicular layers. The interlaminar shear strength of the Hemlock CLT was positively correlated with the elastic modulus of its parallel layer. The results showed that the CLT short-span beams had three failure modes when subjected to a three-point bending test, namely perpendicular layer rolling shear failure, CLT interlaminar shear failure, and parallel layer bending failure. The shear stress of the oriented laminated beam followed a parabolic distribution along the height of the section, while the shear stress of the orthogonally laminated beams tended to be balanced, rather than parabolically distributed along the height of section. The short beam three-point bending method was able to effectively test the interlaminar shear strength of CLT due to its stable and readable load.
Online Access
Free
Resource Link
Less detail