Paper is a material known to everybody. It has a network structure consisting of wood fibres
that can be mimicked by cooking a portion of spaghetti and pouring it on a plate, to form a …

The influence of strain during drying is known to have a large effect on its mechanical
properties like tensile strength, Young's modulus and hygroexpansion. In this study we …

A computationally efficient method to study the in-plane and out-of-plane dimensional
instability of thin paper sheets under the influence of moisture changes is presented. The …

A number of problems associated with dimensional stability of paper products have to do
with hygroexpansion in response to changes in humidity or moisture content. The main …

Cellulose nanofibrils (NFCs) are slender nanoparticles with outstanding mechanical
properties that are used to enhance the mechanical properties of polymer nanocomposites …

Paper, a porous-fibrous network, is made up of hydrophilic fibres, which are notably
susceptible to deformations due to variations in moisture content. The response of paper …

Fiber networks are ubiquitous due to their low cost and high ratio of mechanical
performance to weight. Fiber networks made of cellulose fibers from trees are used as …

In this chapter, we discuss the impact of moisture by considering cases in which moisture
induces out-of-plane deformations. Such undesirable deformations are a nagging quality …

The strength of paper is a multi-scale problem. Although paper is a thin product, its strength
depends on the characteristics of the microstructure in the thickness direction as well as the …

This doctoral thesis covers the topic of modeling the three-dimensional fiber networks with
the finite element method. It contains the part addressing the numerical aspects of the …