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Research project (§ 26 & § 27)
Duration : 2022-12-01 - 2025-11-30

Wood F3 stands for firm (=mechanically stable), fire-resistant and formable wood structures. In previous projects (WoodC.A.R., MoveWOOD, CARpenTiER, etc.), on the one hand, the calculability of wood-based materials by means of numerical methods has been demonstrated, making it possible today to calculate and design wood-hybrid materials using state-of-the-art FE-methods. On the other hand, it has been demonstrated in projects (e.g. Strong Cellulose Composites) that high-performance materials can be produced from wood by densification of veneers. Basic studies on biomimetic approaches for the creation of freely 3D-formable wood structures with high fracture energy provided interesting results. Therefore, the objective of the project is to combine the results from the different projects to new ambitious targets, thus creating the possibility to create high quality and high-performance bio-composites from low value hardwood resources to meet the requirements of the aircraft and automotive industries. Two basic construction principles of wood-based composites are followed for the production of highly densified wood composites: Strand or particle-based materials and veneer-based shell structures. If necessary, the developed materials and structures will be reinforced with (natural) fibres and combined with other materials (metals, plastics). In addition to the ambitious scientific goals, the consortium is pursuing the implementation of the results in demonstrators for the aircraft and automotive industries.
Research project (§ 26 & § 27)
Duration : 2022-10-01 - 2025-12-31

Potential of native wood species
Research project (§ 26 & § 27)
Duration : 2022-12-01 - 2025-11-30

In recent years, timber constructions have been able to demonstrate their suitability for multi-storey construction through various lighthouse projects (e.g. LCT ONE, HoHo etc.). The use of wood as structural material in the construction sector is not only favourable to substitute energy-intensive raw materials while storing carbon simultaneously, but also for the need to satisfy the increased demand for building materials. A dramatic increase in the utilization of the resources used is just as inevitable as the digital dimensioning of building components. Currently successful timber construction products such as cross laminated timber are predominantly based on softwood lumber and have a low raw material yield (30-40%) due to the process. The "UniStrand" project is intended to outline and research the technological and design fundamentals for a (approx. 7-15cm) thick, panel-shaped timber building material for multi-storey, structural building applications. The starting material will be wood strands, which can be produced with a high raw material yield of over 80%. Hardwood and softwood assortments or a combination thereof are to serve as raw material. By forming unidirectionally oriented boards of different densities, a predictable intermediate product with improved mechanical properties compared to already established strand-based products (OSB, LSL) is to be created. Finally, the required barrier effect and material thickness of the layered wall and ceiling elements will be achieved by crosswise ply bonding. Based on the design optimization of the finished elements, coupled with an application-oriented cut optimization, it is possible to produce targeted elements that use high-performance panel material only where this is also statically required. The results are evaluated in parallel by a process-oriented life-cycle and technology assessment. The fundamentals created form the basis for large-scale industrial implementation and pave the way for a resource-efficient, next generation wood building material.

Supervised Theses and Dissertations