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Biaxial (In-Plane) Failure and Yield of Paperboard
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.). KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.ORCID iD: 0000-0001-8699-7910
2016 (English)In: / [ed] Samuel Schabel, 2016Conference paper, Abstract (Other academic)
Abstract [en]

Understanding the biaxial (in-plane) failure behavior of paperboard is crucial to understand the limits of 3-D forming of paper materials, because the biaxial strain failure limit determines the extent to which paperboard can be formed in different conditions.

A traditional cruciform biaxial specimen has been redesigned and modified with the help of laser engraving. By the use of laser engraving, 90 % of the effective thickness of the specimen in the center of the cruciform was removed, thus making the cruciform specimen more likely to fail in the center than at the edges. A variety of strain ratios were utilized to test the specimens with a biaxial testing machine, and the strain field was measured utilizing digital image correlation.

The results of the biaxial testing were analyzed in order to determine both the strain-based yield and failure surfaces. Additionally, the stresses in the center of the specimen were estimated based on the forces measured during the test. Based on these estimated stresses, stress-based yield and failure surfaces were also constructed. Furthermore, various models for the strain- and stress-based yield surfaces were applied to the data and compared.

Place, publisher, year, edition, pages
2016.
National Category
Engineering and Technology Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-203359OAI: oai:DiVA.org:kth-203359DiVA: diva2:1082046
Conference
Progress in Paper Physics Seminar 2016, 22-26 September, 2016, Darmstadt, Germany
Note

QC 20170321

Available from: 2017-03-15 Created: 2017-03-15 Last updated: 2017-03-21Bibliographically approved

Open Access in DiVA

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Other links

http://www.ppps2016.de/

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Linvill, EricÖstlund, Sören
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