A micromechanical fracture analysis to investigate the effect of healing particles on the overall mechanical response of a self-healing particulate composite

A computational fracture analysis is conducted on a self-healing particulate composite employing a finite element model of an actual microstructure. The key objective is to quantify the effects of the actual morphology and the fracture properties of the healing particles on the overall mechanical behaviour of the (MoSi2) particle-dispersed...

Modelling fracture and healing in particulate composite systems

Research in the field of self-healing materials gained significant attention in the last decade owing to its promise of enhanced durability of the material components in engineering applications. Though the research has led to several successful demonstrations, extensive experimental tests will be required for a successful demonstration. Further...

A cohesive-zone crack healing model for self-healing materials

A cohesive zone-based constitutive model, originally developed to model fracture, is extended to include a healing variable to simulate crack healing processes and thus recovery of mechanical properties. The proposed cohesive relation is a composite-type material model that accounts for the properties of both the original and the healing...

Magnetically Driven Healing of Self-Healing Polymers

Damage in materials and structures is unavoidable, leading to the time deterioration of its functional properties (e.g. barrier, load bearing, aesthetics) and ultimate repair or replacement. Lifetime extension can be achieved by using materials with initially higher performance or using materials that can repair themselves (self-healing). The...

Self-healing of deformation-induced defects in Fe-based alloys using positron annihilation techniques

This thesis investigates the self-healing mechanisms of deformation-induced defects in ferritic Fe-Au(-B-N) and Fe-Mo alloys, by segregation and precipitation of Au elements and Fe2Mo compounds. For this purpose, cyclic tensile tests on the Fe-Au(-B-N) alloys are conducted interrupted with isothermal ageing steps at 550 °C. Coincidence Doppler...

Strain recovery and self-healing in dual cross-linked nanoparticle networks

Via computational modeling, we investigate the mechanism of strain recovery in dual cross-linked polymer grafted nanoparticle (PGN) networks. The individual nanoparticles are composed of a rigid spherical core and a corona of grafted polymers that encompass reactive end groups. With the overlap of the coronas on adjacent particles, the reactive...

Self-healing behaviour originated by dynamic covalent bonds in diarylbibenzofuranone: A density functional study

Abstract only.

Self-healing fiber reinforced composites, beyond the clever concepts?

Abstract only.

ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013

Symposium organised by Ghent University, Department of Structural Engineering and Delft University of Technology, Aerospace Structures & Materials. Materials play an extremely important role in our lives. These materials may be of a very different nature ranging from metals over concrete to polymers and composite materials. They all have in...

The impact of self healing materials on telecommunication: Towards a concrete aircraft?

The use of a material for a specific application is governed by considerations on the expected conditions during its lifetime. For aerospace applications for instance, lightness, reliability and thermal stability ofthe material are of major importance. No material will ever possess all the desired properties at the same time. Therefore the...

Self Healing: An emerging property for new materials