1. Analysis of long crack lines in paper webs.
- Author
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Salminen, L. I., Alava, M. J., and Niskanen, K. J.
- Subjects
- *
FRACTURE mechanics , *PAPER , *SURFACE roughness , *CORROSION & anti-corrosives , *MATERIAL fatigue - Abstract
: We analyze 6500 mm long fracture lines of paper as an example of crack propagation involving disorder. The cracks are asymptotically self-affine, with a roughness exponent close to 0.6. Systematic deviations from the power-law-scaling exist below a lengthscale related to the microscopic heterogeneities and possibly to a cross-over from 3d to 2d crack propagation. Several analysis methods are discussed, including first return analysis and the detection of correlated trends. [ABSTRACT FROM AUTHOR]
- Published
- 2003
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