Investigations on the thermo-mechanical behaviour of densified veneer wood for cryogenic applications
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
In this study, the thermo-mechanical behaviour of densified veneer wood (DVW) for cryogenic applications like load-bearing insulation elements for liquid energy sources is investigated. Mechanical tests with compression parallel and transverse to the veneer plane were performed after conditioning the material at five temperature levels: +60°C, +20°C, −40°C, −78°C (dry ice) and −196°C (liquid nitrogen). The investigations showed increasing compression moduli but also increasing brittleness with decreasing temperature. The compressive strength increased with decreasing temperature until about −30°C. Below this temperature, the strength slightly decreased again. The specific heat capacity was determined in the range of −150°C to +60°C and showed a linear dependency on temperature below +20°C. Above +20°C, a non-linear increase is observed due to evaporation of bound water. Finally, a technique is presented to mould DVW boards transverse to the lamination direction with a thermo-hygro-mechanical process in order to reduce waste material associated with commonly used chipping techniques.
Details
Original language | English |
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Pages (from-to) | 738-744 |
Number of pages | 7 |
Journal | Wood Material Science and Engineering |
Volume | 19 |
Issue number | 3 |
Early online date | 13 Dec 2023 |
Publication status | Published - 2024 |
Peer-reviewed | Yes |
External IDs
ORCID | /0000-0002-5948-2097/work/149080976 |
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ORCID | /0000-0001-8714-5963/work/149081885 |
Scopus | 85179749998 |
Mendeley | 5fb7860d-87b5-328f-8ad0-5e8541ac5eab |
Keywords
Research priority areas of TU Dresden
DFG Classification of Subject Areas according to Review Boards
Subject groups, research areas, subject areas according to Destatis
Keywords
- compressive strength, cryogenic temperatures, compressed laminated wood, moulding technique, specific heat capacity, Compressive strength