Micro-Mechanical Tensile and Shear Tests on Tissue Slices of Norway Spruce

Description

This dataset presents experimental results from tensile (UTS) and shear (USS) tests performed on tissue slices of Norway Spruce, tested across different anatomical orientations - longitudinal (L), radial (R), and tangential (T) - and at varying relative humidity (RH) levels of 30%, 65%, and 90%. The tissue samples were sliced in all orientations: {LR, RL, RT, TR, LT, TL}, where the first letter indicates the longest dimension and the second represents the width. {LR,RL,RT,TR} are characterized by alternating bands of earlywood (EW) and latewood (LW). For {LT,TL}, different tissues were isolated for EW and LW: {LT-EW, LT-LW, TL-EW, TL-LW}. The dataset is organized by sample and test type, with each file containing multiple sheets - one for each sample. Each sheet provides detailed information about the sample, including its dimensions, RH during testing, failure stress (maximum recorded stress), and elastic modulus (Young’s or shear modulus). The modulus is calculated from a linear fit of the stress-strain curve between approximately 10% to 60% of the strain corresponding to the ultimate strength, and the start and end indexes used for this calculation are provided in each sheet. Additionally, each sheet contains recorded time, elongation, and force, along with strain and stress values calculated from these measurements and the sample dimensions. A. Ferrara and F.K. Wittel (2024), "Micro-mechanical tests on tissue slices of Norway spruce: tensile and shear performance"

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