Franke, Bettina; Franke, Steffen; Schiere, Marcus Jacob; Müller, Andreas (2019). Moisture content and moisture-induced stresses of large glulam members: laboratory tests, in-situ measurements and modelling Wood Material Science & Engineering, 14(4), pp. 243-252. Taylor & Francis 10.1080/17480272.2018.1551930
Full text not available from this repository. (Request a copy)Wood as a hygroscopic material interacts with the ambient climate variations of relative humidity and temperature. Due to constrained volumetric strains, i.e. swelling and shrinkage, changes in moisture content impose moisture induced stresses (MIS) which, if exceeding the tensile stress of the material, can cause fractures such as cracks or delamination. A monitoring campaign was initiated to measure the variations of the climate and moisture content in existing timber bridges and newly erected structure. Additionally, experimental test series under laboratory conditions were performed. Finally, the moisture induced mechanical response was simulated using a coupled moisture diffusion and mechanical model. The measuring results support the choice of the known service classes depending on the user service resp. building type. On the other hand, a possible differentiation of the service class over the cross section is discussed according to measuring results and practical applications. Cross sections are classified regarding the assumed ambient climate in service by numerical simulations developing the moisture content and gradient over the cross section.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
School of Architecture, Wood and Civil Engineering School of Architecture, Wood and Civil Engineering > Institute for Timber Construction, Structures and Architecture |
Name: |
Franke, Bettina 0000-0002-8087-9347; Franke, Steffen 0000-0003-2430-8491; Schiere, Marcus Jacob and Müller, Andreas |
Subjects: |
Q Science > QD Chemistry Q Science > QK Botany |
ISSN: |
1748-0272 |
Publisher: |
Taylor & Francis |
Language: |
English |
Submitter: |
Steffen Franke |
Date Deposited: |
04 Dec 2019 11:11 |
Last Modified: |
19 Oct 2021 21:45 |
Publisher DOI: |
10.1080/17480272.2018.1551930 |
Uncontrolled Keywords: |
Moisture content Wood Monitoring Simulation Internal stresses |
URI: |
https://arbor.bfh.ch/id/eprint/6711 |
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