1 The challenge -- 2 Paper as an engineering material -- 2.1 Introduction -- 2.2 Linear elasticity of paper -- 2.2.1 Elastic constants -- 2.2.2 Typical stiffness values for paper -- 2.3 Stress-strain behavior of paper -- 2.3.1 In-plane tensile loading -- 2.3.2 Visco-elastic effects -- 2.3.3 Other loading modes -- 2.4 Multi-axial strength -- 2.5 Mechanical properties in relation to the papermaking process -- 2.5.1 Preparation of papermaking fibers -- 2.5.2 Effect of the paper machine -- Part I: Structural strength -- 3 Packaging performance -- 3.1 Introduction -- 3.2 Paper-based packaging materials -- 3.2.1 Corrugated board -- 3.2.2 Box manufacturing process -- 3.2.3 Carton board -- 3.3 Loads imposed on boxes -- 3.4. Strength of boxes -- 3.4.1 Short-term compressive loading -- 3.4.2 Empirical models for static box strength -- 3.4.3 Finite element models -- 3.4.4 Long-term loading -- 3.5 Summary -- 4 Behavior of corners in carton board boxes -- 4.1 Introduction -- 4.2 Folding of a multiply carton board -- 4.3 Creasing -- 4.4 Important material properties -- 4.5 Final remarks -- 5 Fracture properties -- 5.1 Introduction -- 5.2 Examples of practical applications of fracture mechanics -- 5.2.1 Mode I failure under in-plane tension -- 5.2.2 Out-of-plane delamination -- 5.3 Crack tip modeling in paper materials -- 5.3.1 Characteristic length scale and the basis of crack tip modeling -- 5.3.2 Linear elastic fracture mechanics LEFM -- 5.3.3 Nonlinear fracture mechanics using J-integral -- 5.3.4 Cohesive zone models -- 5.3.5 Continuum damage mechanics modeling of paper -- 5.3.6 Delamination of paper materials -- 5.4 Compressive failure -- 5.5 Summary -- Part II: Dynamic stability -- 6 Web dynamics in paper transport systems -- 6.1 Introduction -- 6.2 Dynamics of web transport.

6.2.1 Basic formulation of web transport problems -- 6.2.2 The case of an axially moving web -- 6.2.3 Moving thread problem -- 6.2.4 Fluttering of a two-dimensional web -- 6.3 Concluding remarks -- 7 Creep and relaxation -- 7.1 Introduction -- 7.2 Relaxation and creep as phenomena -- 7.3 Modeling of time-dependence -- 7.3.1 Linear behavior -- 7.3.2 Nonlinearity -- 7.3.3 Recoverability -- 7.3.4 Time scales -- 7.4 Creep and relaxation properties of paper -- 7.4.1 Creep -- 7.4.2 Stress relaxation -- 7.4.3 Tensile versus compressive creep -- 7.4.4 Effect of the papermaking process and furnish -- 7.5 Moisture effects -- 7.5.1 Softening with moisture -- 7.5.2 Accelerated creep -- 7.6 Prediction of box lifetime -- 7.6.1 Creep response of a box -- 7.6.2 Previous equations for box lifetime -- 7.6.3 Derivation of a new equation for box lifetime -- 7.6.4 Accounting for variability -- 7.7 Summary -- 8 Statistical aspects of failure of paper products -- 8.1 Introduction -- 8.2 Practical examples -- 8.2.1 Web breaks in a printing press and on a paper machine -- 8.2.2 Stacking performance of boxes -- 8.3 Statistical approaches for failure in materials or systems -- 8.3.1 The chain model -- 8.3.2 The bundle model -- 8.3.3 Time-dependent, statistical failure model -- 8.4 Statistical failure of paper -- 8.4.1 Strength distributions -- 8.4.2 Factors controlling strength distributions -- 8.4.3 Strength scaling -- 8.4.4 Web break prediction -- 8.5 Research front of statistical failure of paper -- 8.6 Concluding remarks -- Part III: Reactions to moisture and water -- 9 Moisture-induced deformations -- 9.1 Introduction -- 9.2 Moisture-induced deformations -- 9.2.1 Hygroexpansion of paper -- 9.2.2 Effect of moisture history -- 9.3 Fluting -- 9.3.1 Tension wrinkling -- 9.3.2 Effect of small scale strain variations.

9.3.3 Fluting vs. cockling -- 9.4 Summary -- 10 Mechanics in printing nip for paper and board -- 10.1 Introduction -- 10.2 Nip mechanics in offset printing of paper -- 10.3 Nip mechanics in flexo post printing of corrugated board -- 10.4 Micro-fluidics of ink in printing nip -- 10.5 Concluding remarks -- Part IV: Material properties -- 11 Micromechanics -- 11.1 Introduction -- 11.2 Fiber network structure -- 11.2.1 Two-dimensional network -- 11.2.2 Densification mechanisms -- 11.2.3 Statistical geometry of real fiber networks -- 11.2.4 Key structural factors when engineering the mechanical properties of paper -- 11.3 Elastic modulus -- 11.3.1 The effect of paper density -- 11.3.2 The shear-lag mechanism -- 11.3.3 The activation mechanism -- 11.3.4 Elastic modulus of activated fiber network -- 11.3.5 Key factors when engineering the elastic modulus of paper -- 11.4 Stress-strain behavior, creep, and bond opening -- 11.5 Fracture process in the fiber network -- 11.5.1 Microscopic observations -- 11.5.2 Micromechanical description of the fracture process -- 11.6 Hygroexpansion -- 11.7 Final remarks -- 12 Wood biocomposites - extending the property range of paper products -- 12.1 Introduction -- 12.2 Material components: fibers and polymers -- 12.2.1 Plant fiber structure -- 12.2.2 Polymer matrices and binders -- 12.3 Micromechanics of fiber composites -- 12.3.1 Weight fraction and volume fraction -- 12.3.2 Elastic properties in unidirectional composites -- 12.3.3 Elastic properties in short fiber composites -- 12.3.4 Interfacial strength in short fiber composites -- 12.4 Composites data: wood fiber/thermoplastic -- 12.5 Composites data: wood fiber/thermoset -- 12.6 Nano-fibrillated cellulose materials -- 12.6.1 Cellulosic "nano-paper" -- 12.6.2 Nano-composites -- 12.7 Conclusions -- Index.