Chai, H.
and Lawn, B.
(2021),
Hydraulically Pumped Cone Fracture in Bilayers With Brittle Coatings, Scripta Materialia
(Accessed December 21, 2024)
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Hydraulically Pumped Cone Fracture in Bilayers With Brittle Coatings
Published
Author(s)
H Chai,
Abstract
An earlier FEM analysis of inner cone cracks in monolithic brittle solids subject to cyclic indentation in liquids is extended to include the case of a brittle layer bonded to a compliant substrate, using a model glass/polycarbonate bilayer system as an illustrative case study. Provision is made for incorporation of plate flexure stresses, along with hydraulic pumping stresses, into the Hertzian contact field. Tensile flexure stresses ultimately accelerate inner cone cracks through the lower halves of the glass plates to unstable failure. The analysis accounts for the experimentally observed trends in the inner cone crack evolution in cyclic contact fatigue.Citation
Scripta Materialia
Pub Type
Journals
Keywords
bilayers, brittle coatings, cyclic contact, hydraulic pumping, inner cone cracks
Citation
Issues
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Created October 12, 2021