Materials systems for interleave toughening in polymer composites

Functional Polymer-Polymer Composites by Nano/Meso-Fiber Encapsulation: Practical Applications in Drug Delivery Systems and Polymer Toughening

Fracture resistance curves and toughening mechanisms in polymer based dental composites.

The fracture resistance (R-curve behaviour) of two commercial dental composites (Filtek Z350(®) and Concept Advanced(®)) were studied using Double Cantilever Beam sandwich specimens loaded with pure bending moments to obtain stable crack growth. The experiments were conducted in an environmental scanning electron microscope to (a) accurately measure the applied energy-release rate for crack ini...

Model of Transformation Toughening in Brittle Materials

Assuming that the energy dissipation decreases inversely with distance from the crack tip, the increase in steady-state toughness of a transformation-toughened ceramic is estimated to be AJ = (AJ,/w) In (1 + w), where (i) AJo denotes the toughness increment which would be expected for a given zone height h , assuming full transformation throughout the zone, and (ii) w is a nondimensional parame...

Toughening mechanisms in bioinspired multilayered materials.

Outstanding mechanical properties of biological multilayered materials are strongly influenced by nanoscale features in their structure. In this study, mechanical behaviour and toughening mechanisms of abalone nacre-inspired multilayered materials are explored. In nacre's structure, the organic matrix, pillars and the roughness of the aragonite platelets play important roles in its overall mech...

Toughening vinyl ester matrix composites by tailoring