About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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30 Years of Nanoindentation with the Oliver-Pharr Method and Beyond
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Presentation Title |
Estimating the Elastic Constants of Pulp Fibers with Nanoindentation |
Author(s) |
Caterina Czibula, August Brandberg, Megan J. Cordill, Artem Kulachenko, Christian Teichert, Ulrich Hirn |
On-Site Speaker (Planned) |
Caterina Czibula |
Abstract Scope |
Pulp fibers are extensively used for paper and packaging, but structure-property relations on the fiber scale are complicated and not fully understood. The fiber cell wall consists of different layers with varying thickness, chemical composition, and alignment of cellulose microfibrils, giving them anisotropic mechanical properties. Micromechanical modeling of fiber networks relies on material data of individual fibers. However, due to the fibers’ dimensions, single fiber testing is limited to obtaining the longitudinal elastic modulus. The application of nanoindentation (NI) methods is advantageous because the surface of the fiber can be accessed from different directions to probe the mechanical response along different normals. Here, conventional NI as well as atomic force microscopy-based NI are explored to obtain an estimate of the transverse and longitudinal elastic constants of wood pulp fibers. The results are compared to uniaxial tensile testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, |