6533b829fe1ef96bd128a604

RESEARCH PRODUCT

Coating fragmentation by branching cracks at large biaxial strain

Yves LeterrierJanis Andersons

subject

Materials sciencePolymersAerospace EngineeringOcean Engineeringengineering.materialBranching (polymer chemistry)BrittlenessCoatingFragmentation (mass spectrometry)FragmentationCoatingsmental disordersmedicineComposite materialCivil and Structural Engineeringchemistry.chemical_classificationSilicon oxideFissureMechanical EngineeringStatistical and Nonlinear PhysicsPolymerRate equationCondensed Matter PhysicsCrackingmedicine.anatomical_structureNuclear Energy and EngineeringchemistryengineeringWeibull distribution

description

The fragmentation behaviour of a thin brittle coating attached to a ductile substrate subjected to equibiaxial quasi-static in-plane tension is studied. The experimentally observed cracking patterns are related to repetitively branching coating cracks. The fragmentation process is modelled by the rate equation approach. It is established that fragmentation by branching cracks leads to a qualitatively different fragment distribution compared to binary fragmentation. The fragmentation model is applied to identify crack branching and coating/substrate stress transfer parameters.

yearjournalcountryeditionlanguage
2007-07-01
https://infoscience.epfl.ch/record/109346