The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917771053367296 |
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| author | Czibula, Caterina Ulz, Manfred H. Wagner, Alexander Elsayad, Kareem Hirn, Ulrich Koski, Kristie J. |
| author_facet | Czibula, Caterina Ulz, Manfred H. Wagner, Alexander Elsayad, Kareem Hirn, Ulrich Koski, Kristie J. |
| contents | Brillouin light scattering spectroscopy (BLS) is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers. Using an equal angle scattering geometry, we provide a thorough description of the procedure to determine the complete transversely isotropic elastic stiffness tensor. From the stiffness tensor the engineering-relevant material parameters such as Young's moduli, shear moduli, and Poisson's ratios in radial and axial fiber direction are evaluated. The investigated fiber type shows that, at ideal conditions, the material exhibits optical waveguide properties resulting in spontaneous Brillouin backscattering which can be used to obtain additional information from the Brillouin spectra, enabling the measurement of two different scattering processes and directions with only one scattering geometry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_13273 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy Czibula, Caterina Ulz, Manfred H. Wagner, Alexander Elsayad, Kareem Hirn, Ulrich Koski, Kristie J. Applied Physics Materials Science Brillouin light scattering spectroscopy (BLS) is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers. Using an equal angle scattering geometry, we provide a thorough description of the procedure to determine the complete transversely isotropic elastic stiffness tensor. From the stiffness tensor the engineering-relevant material parameters such as Young's moduli, shear moduli, and Poisson's ratios in radial and axial fiber direction are evaluated. The investigated fiber type shows that, at ideal conditions, the material exhibits optical waveguide properties resulting in spontaneous Brillouin backscattering which can be used to obtain additional information from the Brillouin spectra, enabling the measurement of two different scattering processes and directions with only one scattering geometry. |
| title | The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy |
| topic | Applied Physics Materials Science |
| url | https://arxiv.org/abs/2401.13273 |