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Mechanical Properties of Cross-Laminated Timber Accounting for Non-Bonded Edges and Additional Cracks

https://research.thinkwood.com/en/permalink/catalogue1665
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Nairn, John
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Cracks
Thermal Expansion
Moisture Expansion
Durability
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3742-3749
Summary
Cross-laminated timber (or CLT) must be recognized as a “precracked” wood composite material where the non-bonded edges within each layer act as cracks in the structure. Furthermore, differential shrinkage between the layers of installed CLT panels subjected to variations in moisture and temperature will result in additional cracks forming parallel to the initial precracks. Fortunately, there is a large literature on the effect of such cracks in cross-laminated composites used in aerospace composites. This paper applies prior literature (when available), and extends it (when needed) to derive all mechanical, thermal expansion, and moisture expansion properties of CLT as s function of the number of cracks in each layer. These results can be used to better design CLT structures. Furthermore, because CLT will form additional cracks when in service, these equations should be a key component of any durability analysis.
Online Access
Free
Resource Link
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Predicting Failure of Notched Cross-Laminated Timber Plates Including the Effect of Environmental Stresses

https://research.thinkwood.com/en/permalink/catalogue2354
Year of Publication
2020
Topic
Mechanical Properties
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Nairn, John
Year of Publication
2020
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Mechanical Properties
Design and Systems
Keywords
Delamination
Fracture Mechanisms
Residual Stresses
Language
English
Research Status
Complete
Series
Wood Material Science & Engineering
Online Access
Free
Resource Link
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