Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
770333 | Engineering Fracture Mechanics | 2014 | 7 Pages |
Abstract
In order to investigate delamination crack initiation from an interfacial edge in nanoscale component with the singular stress field, we conduct mechanical experiments using four kinds of cantilever specimens with the nanoscale singular stress field at the copper/silicon nitride interface. The results reveal that regardless of the specimen dimensions, the critical magnitude of the plastic stress intensity parameter, Kinterface edge (C), is constant (112 MPa m0.179) within the singular stress field range of approximately 25 nm. This indicates that in the nano-sized component, a delamination crack initiation is dominated by a nanoscale singular stress field near the interface edge.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Emi Kawai, Kazunori Sanada, Takashi Sumigawa, Takayuki Kitamura,