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7 records – page 1 of 1.

Advanced Wood-Based Solutions for Mid-Rise and High-Rise Construction: In-Situ Testing of the Brock Commons 18-Storey Building for Vibration and Acoustic performances

https://research.thinkwood.com/en/permalink/catalogue1180
Year of Publication
2018
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Author
Hu, Lin
Cuerrier-Auclair, Samuel
Organization
FPInnovations
Year of Publication
2018
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Topic
Acoustics and Vibration
Keywords
Non-Destructive Testing
Vibration Performance
Natural Frequencies
Damping Ratios
Sound Insulation
Ambient Vibration Testing
Apparent Sound Transmission Class
Language
English
Research Status
Complete
Summary
This report addresses serviceability issues of tall wood buildings focusing on their vibration and sound insulation performance. The sound insulation and vibration performance may not affect the building’s safety, but affects the occupants’ comfort and the proper operation of the buildings and the function of sensitive equipment...
Online Access
Free
Resource Link
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Air-Coupled Ultrasound Propagation and Novel Non-Destructive Bonding Quality Assessment of Timber Composites

https://research.thinkwood.com/en/permalink/catalogue13
Year of Publication
2012
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)

Experimental and Numerical Analysis of Mixed I-214 Poplar/Pinus Sylvestris Laminated Timber Subjected to Bending Loadings

https://research.thinkwood.com/en/permalink/catalogue2592
Year of Publication
2020
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
Rescalvo, Francisco
Timbolmas, Cristian
Bravo, Rafael
Gallego, Antolino
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Topic
Mechanical Properties
Keywords
Poplar
Pine
Bending
Numerical Modelling
Non-Destructive Testing
Language
English
Research Status
Complete
Series
Materials
Summary
The structural use of timber coming from fast growing and low-grade species such as poplar is one of the current challenges in the wood value chains, through the development of engineering products. In this work, a qualitative comparison of the behavior of mixed glued laminated timber made of pine in their outer layers and of poplar in their inner layers is shown and discussed. Single-species poplar and pine laminated timber have been used as control layouts. The investigation includes destructive four-point bending tests and three non-destructive methodologies: finite elements numerical model; semi-analytical model based on the Parallel Axes theorem and acoustic resonance testing. An excellent agreement between experimental and numerical results is obtained. Although few number of samples have been tested, the results indicate that the use of poplar as a low-grade species in the inner layers of the laminated timber can be a promising technology to decrease the weight of the timber maintaining the good mechanical properties of pine. Likewise, the need for the use of the shear modulus in both experimental measurements and numerical analysis is suggested, as well as the need to reformulate the vibration methodology for non-destructive grading in the case of mixed timber.
Online Access
Free
Resource Link
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High-Precision Pattern Recognition Wood Components with 3D Ultrasound

https://research.thinkwood.com/en/permalink/catalogue937
Year of Publication
2013
Topic
Mechanical Properties
Serviceability
Material
Glulam (Glue-Laminated Timber)
Solid-sawn Heavy Timber

Non-Destructive Testing of Wood–Correlation of Ultrasonic and Stress Wave Test Results in Glued Laminated Timber Members

https://research.thinkwood.com/en/permalink/catalogue1122
Year of Publication
2015
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)

A Vibration-Based Approach for the Estimation of the Loss of Composite Action in Timber Composite Systems

https://research.thinkwood.com/en/permalink/catalogue218
Year of Publication
2013
Topic
Mechanical Properties
Material
LVL (Laminated Veneer Lumber)
Application
Beams
Author
Dackermann, Ulrike
Li, Jianchun
Rijal, Rajendra
Samali, Bijan
Publisher
Scientific.net
Year of Publication
2013
Country of Publication
Switzerland
Format
Journal Article
Material
LVL (Laminated Veneer Lumber)
Application
Beams
Topic
Mechanical Properties
Keywords
Non-Destructive Testing
Static Loading Test
Damage Index (DI) Method
Loss of Composite Action Index (LCAI)
Language
English
Research Status
Complete
Series
Advanced Materials Research
Summary
This paper presents a novel approach for the determination of the loss of composite action for timber composite systems using only measurements from non-destructive vibration testing. Traditionally, the composite action of a system is evaluated from stat...
Online Access
Free
Resource Link
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Water in Mass Timber

https://research.thinkwood.com/en/permalink/catalogue2318
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Organization
TallWood Design Institute
Oregon State University
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Moisture
Keywords
Vibration Testing
Non-Destructive Testing
Biodegradation
Structural Performance
Aesthetic Properties
Cracks
Delamination
Funghi
Insects
CAT-Scan Imaging
Research Status
In Progress
Notes
Project contact is Arijit Sinha at Oregon State University
Summary
This project will undertake a comprehensive analysis of the effects of water exposure, in various forms, on mass timber building elements. Water intrusion is mostly commonly seen during construction, but can also occur during failure of roofs or external facades or as a result of internal plumbing failures. The research team will employ CAT-scan imaging, vibrational testing, non-destructive and small-scale physical tests to assess the effects of moisture intrusion and any subsequent biodegradation on the structural performance and aesthetic characteristics of the building elements and connections. This analysis will include investigating the effects of cracking and delamination that may occur as a result of wetting and drying. The project will facilitate development of guidelines on moisture control during construction, help identify suitable methods for protecting mass timber products where required and highlight design features that can be used to mitigate the risk of fungal and insect attack.
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7 records – page 1 of 1.