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10 records – page 1 of 1.

An Innovative Method Based on Grain Angle Measurement to Sort Veneer and Predict Mechanical Properties of Beech Laminated Veneer Lumber

https://research.thinkwood.com/en/permalink/catalogue1286
Year of Publication
2018
Topic
Mechanical Properties
Material
LVL (Laminated Veneer Lumber)
Application
General Application

Durability of Structural Lumber Products after Exposure at 82C and 80% Relative Humidity

https://research.thinkwood.com/en/permalink/catalogue784
Year of Publication
2005
Topic
Mechanical Properties
Moisture
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Application
General Application
Author
Green, David
Evans, James
Hatfield, Cherilyn
Byrd, Pamela
Organization
Forest Products Laboratory
Year of Publication
2005
Country of Publication
United States
Format
Report
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Application
General Application
Topic
Mechanical Properties
Moisture
Keywords
Aspen
Douglas-Fir
Modulus of Elasticity
Modulus of Rupture
Southern Pine
Poplar
Relative Humidity
SPF
Temperature
Flexural Properties
Language
English
Research Status
Complete
Summary
Solid-sawn lumber (Douglas-fir, southern pine, Spruce– Pine–Fir, and yellow-poplar), laminated veneer lumber (Douglas-fir, southern pine, and yellow-poplar), and laminated strand lumber (aspen and yellow-poplar) were heated continuously at 82°C (180...
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Effect of Glue-line Thickness on Pull-Out Behavior of Glued-in GFRP Rods in LVL: Finite Element Analysis

https://research.thinkwood.com/en/permalink/catalogue1331
Year of Publication
2017
Topic
Mechanical Properties
Material
LVL (Laminated Veneer Lumber)
Application
General Application

Effect of Low Relative Humidity on Properties of Structural Lumber Products

https://research.thinkwood.com/en/permalink/catalogue793
Year of Publication
2003
Topic
Mechanical Properties
Moisture
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Application
General Application
Author
Green, David
Evans, James
Publisher
Society of Wood Science and Technology
Year of Publication
2003
Country of Publication
United States
Format
Journal Article
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Application
General Application
Topic
Mechanical Properties
Moisture
Keywords
Flexural Properties
Modulus of Elasticity
Modulus of Rupture
Relative Humidity
Tensile Properties
Moisture Content
Analytical Model
Language
English
Research Status
Complete
Series
Wood and Fiber Science
Summary
Wood used in industrial settings, and in some arid parts of the United States, may be subjected to very low relative humidity (RH). Analytical models available for predicting the effect of moisture content (MC) on the properties of solid-sawn lumber imply significant strength loss at very low MC...
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Effects of ACQ Preservative Treatment on the Mechanical Properties of Hardwood Glulam

https://research.thinkwood.com/en/permalink/catalogue253
Year of Publication
2012
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Yang, Te-Hsin
Lin, Chih-Hsien
Wang, Song-Yung
Lin, Far-Ching
Publisher
Springer-Verlag
Year of Publication
2012
Country of Publication
Germany
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Beech
Delamination
Hardwood
Maple
Modulus of Elasticity
non-destructive methods
Oak
Ultrasonic Wave
Tap Tone Method
Language
English
Research Status
Complete
Series
European Journal of Wood and Wood Products
ISSN
1436-736X
Online Access
Free
Resource Link
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Effects of Component Ratio of the Face and Core Laminae on Static Bending Strenght Performance of Three-Ply Cross-Laminated Wood Panels with Sugi (Cryptomeria Japonica)

https://research.thinkwood.com/en/permalink/catalogue1468
Year of Publication
2006
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Park, Han-Min
Fushitani, Masami
Publisher
Society of Wood Science and Technology
Year of Publication
2006
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Sugi
Lamina Thickness
Modulus of Elasticity
Modulus of Rupture
Proportional Limit Stress
Bending Strength
Language
English
Research Status
Complete
Series
Wood and Fiber Science
Summary
In order to improve the bending strength performance of three-ply laminated wood panels and use them as construction-grade panel materials, twelve types of three-ply cross-laminated wood panels whose percentages of core lamina thickness versus total lamina thickness were 33%, 50%, and 80% were made with sugi (Japanese cedar)...
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Effects of Layups and Grades of Lumber on Bending Strength Properties of Sugi (Cryptomeria Japonica) Cross Laminated Timber Under In-Plane Loading

https://research.thinkwood.com/en/permalink/catalogue1597
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Hiramatsu, Yasushi
Miyatake, Atsushi
Tamaki, Takashi
Shindo, Kenta
Ido, Hirofumi
Nagao, Hirofumi
Harada, Masaki
Ogiso, Junko
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Bending Tests
Sugi
Modulus of Elasticity
Modulus of Rupture
Japan
Bending Strength
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 1907-1914
Summary
In-plane bending tests of cross laminated timber (CLT) specimens consisting of sugi (Cryptomeria japonica) lumber (symmetrical composition, 3-ply 3-layer, 4-ply 3-layer, 5-ply 5-layer, 7-ply 5-layer, and 7-ply 7-layer layups, and the Mx60 strength grade according to the Japanese Agricultural Standard for CLT)...
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Effects of the Width and Lay-Up of Sugi Cross-Laminated Timber (CLT) on its Dynamic and Static Elastic Moduli, and Tensile Strength

https://research.thinkwood.com/en/permalink/catalogue521
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application

Efficient Measurement of Elastic Constants of Cross Laminated Timber using Modal Testing

https://research.thinkwood.com/en/permalink/catalogue117
Year of Publication
2014
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Zhou, Jianhui
Chui, Ying Hei
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Acoustics and Vibration
Keywords
Elasticity
Modal Testing
Modulus of Elasticity
Natural Frequency
Testing
Vibrations
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
It has been shown that measurement of elastic constants of orthotropic wood-based panel products can be more efficiently measured by modal testing technique. Identification of vibration modes and corresponding natural frequencies is key to the application of modal testing technique. This process is generally tedious and requires a number of measurement locations for mode shape identification. In this study, a simplified method for frequency identification was developed which will facilitate the adoption of the vibration-based testing technique for laboratory and industrial application. In the method, the relationship between frequency order and mode order is first studied considering the boundary condition, elastic properties of the orthotropic panel. An algorithm is proposed to predict the frequency values and mode indices based on corresponding normalized sensitivity to elastic constants, initial estimates of orthotropic ratios and measured fundamental natural frequency. The output from the algorithm can be used for identification of sensitive natural frequencies from up to three frequency spectra. Then the algorithm is integrated with the elastic calculation algorithm to extract the elastic constants from the sensitive frequencies. The elastic constants of cross laminated timber panels were measured by the proposed method. The moduli of elasticity agree well with static testing results. The calculated in-plane shear modulus was found to be within the expected range.
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Elastic Constants of Cross Laminated Timber Panels of Industrial Size: Non-Destructive Measurement and Verification

https://research.thinkwood.com/en/permalink/catalogue1538
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Zhou, Jianhui
Chui, Ying Hei
Schickhofer, Gerhard
Frappier, Julie
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Elastic Constants
Modulus of Elasticity
Shear Modulus
Non-Destructive Tests
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 1061-1068
Summary
Cross laminated timber (CLT) is leading the evolution of wood construction throughout the world. As a two-dimensional plate-like construction product, the in-plane elastic constants of CLT panels are the fundamental parameters for serviceability design. The elastic constants including moduli of elasticity (MOE) in major and minor...
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10 records – page 1 of 1.