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Adhesive behaviour of bonded paper layers: Mechanical testing and statistical modelling

Borri, Claudia and Paggi, Marco and Reinoso, José and Borodich, Feodor M Adhesive behaviour of bonded paper layers: Mechanical testing and statistical modelling. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 230 (9). pp. 1440-1448. ISSN 0954-4062 (2016)

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Abstract

In this study, an experimental methodology based on micromechanical testing inside a scanning electron microscope is proposed to characterise bonding of paper layers connected by wet pressing. The peeling force–displacement evolution law that characterises the delamination of micromechanical double cantilever beam specimens of paper tissue have been extracted from such peeling tests. It is observed that the force–displacement evolution curve achieves a steady-state value related to the effective adhesive energy of the interface. This behaviour is explained by examining the complex load transfer mechanism between the layers exerted by cellulose fibrils. A statistical approach is used for the computation of the effective adhesive energy. It is argued that the observed force–displacement evolution law may be satisfactory described by a stochastic model that depends on the distribution function of the fibrils strength, and on two geometrical distribution functions related to the in-plane and out-of-plane fibrils angles with respect to the undeformed interface configuration. Some applications of the proposed model are demonstrated on examples.

Item Type: Article
Identification Number: https://doi.org/10.1177/0954406215612502
Projects: ERC StG CA2PVM 306622
Funders: European Research Council
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 27 Dec 2016 09:12
Last Modified: 27 Dec 2016 09:12
URI: http://eprints.imtlucca.it/id/eprint/3616

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