Abstract
Paperboard is most often used as a structural material in which stiffness is a critical mechanical property. As such, paperboard mills use stiffness as one of their quality control parameters. Some manufacturing variability of paperboard is caused by changing material anisotropy, a behavior that is difficult to characterize. This work introduces a novel load fixture, designed to produce full-field strains capable of anisotropic Q ij evaluation without wrinkling the paperboard specimen. Anisotropic Q ij evaluation was accomplished using the Virtual Fields Method (VFM), a generalized inverse method. A substantial effort was made to ensure material remained in its linear elastic regime. Q ij determined by the VFM compared favorably with those determined by ultrasonic and tensile coupon tests. An appropriate virtual field mesh was established by a mesh density analysis.
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© 2014 The Society for Experimental Mechanics, Inc.
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Considine, J.M., Pierron, F., Turner, K.T., Vahey, D.W. (2014). Anisotropy Evaluation of Paperboard With Virtual Fields Method. In: Rossi, M., et al. Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00876-9_20
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DOI: https://doi.org/10.1007/978-3-319-00876-9_20
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