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Title: Anisotropy Evaluation of Paperboard With Virtual Fields Method

Source: In: Proceedings of 2013 SEM annual conference and exposition on experimental and applied mechanics. 2013 June 3-5; Lombard, IL. Paper 83; 2013; 8 p.

Author(s)Considine, J.M.; Pierron, F.; Turner, K.T.; Vahey, D.W.

Publication Year: 2013  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4709-4B

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 Qi j evaluation without wrinkling the paperboard specimen. Anisotropic Qi j 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. Qi j 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.

Keywords: VFM; DIC; stiffness; paperboard; anisotropy

Publication Review Process: Non-Refereed (Other)

File size: 284 kb(s)

Date posted: 09/06/2013
RITS Product ID: 65058
Current FPL Scientist associated with this product
Considine, John M.
Materials Research Engineer
  

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