Norway spruce branch wood is mostly chipped and used as fuel. To promote a better value chain of this byproduct, extensive material characterisation is necessary. Branch wood is composed of two distinct regions, namely opposite wood (OW) located in the cross section’s upper half and compression wood (CW) located in its bottom half. Recently, macroscopic branch wood properties were investigated (Florisson et al. (2023) and Hartwig-Nair et al. (2024)). This study supplements the investigation at a mesoscopic level using X-ray micro computed tomography (μCT) and medical image registration (MIR) to estimate the local hygroexpansion strains in CW and OW specimens.
Keywords: hygroexpansion, branch wood, micro computed tomography, medical image registration
Authors
Boris Poupet
Luleå University of Technology, Sweden
Henrik Lycksam
Luleå University of Technology, Sweden
Fredrik Forsberg
Luleå University of Technology, Sweden
Marie Hartwig
Uppsala University, Sweden
Sara Florisson
Uppsala University, Sweden
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