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Self-Affine Crack Pattern in Filter Paper Sheets

Authors :
Mora Santos, C. Alberto
Rivera Martínez, M. del R.
Susarrey Huerta, Orlando
Balankin, A.
Mendoza Nuñez, Maribel
Source :
Key Engineering Materials; September 2010, Vol. 449 Issue: 1 p23-28, 6p
Publication Year :
2010

Abstract

In this work the self-affine crack pattern in Filter Paper sheets is studied. This paper has a well-defined anisotropy of mechanical properties associated with visible preferable orientation of fibers in the machine direction. Fracture behavior is in essence brittle, the rupture lines have self-affine invariance, and the stresses ahead of the straight notch follow a power-law behavior. The roughness exponent value is of H = 0.50 0.01, different from the suggested universal value H = 0.8. The classical theory has demonstrated that, in materials such as metal, there is a relationship between the size and the starting crack stress, which does not happen in this material. The tests show that the starting crack stress from stress-strain behavior curves remains stable for the different specimen sizes w and crack length size. Moreover, different types of geometric groove, circular and linear, and without a crack, were tested and show almost the same behavior.

Details

Language :
English
ISSN :
10139826 and 16629795
Volume :
449
Issue :
1
Database :
Supplemental Index
Journal :
Key Engineering Materials
Publication Type :
Periodical
Accession number :
ejs22665218
Full Text :
https://doi.org/10.4028/www.scientific.net/KEM.449.23