Three models are analyzed: (a) pre-existing stationary cracks, (b) cracks which "nucleate" on a pre-loaded interface, and (c) cracks which grow along the pre-stressed interface, shielded by a thin plasticity-free region.
The agreement between simulation and experiment is good and many aspects of thin film plasticity can be understood with the assumption that small-scale plastic deformation is source controlled rather than mobility controlled.
The impact of size-dependent dislocation mechanisms on thin film plasticity is addressed.
This effect is far less pronounced for the tensile data, as these samples were taper free and thus should only reduce their dimensions according to Poisson's contraction and thinning due to plasticity.
It is an extremely permissive material and it enables design freedom by allowing the processing of more complex and curved shapes". She notes that the more layers of the material will make for stiffer carbon, whereas thinner layers allow more plasticity so in combination they can optimize areas of function where required.
Therefore, it is clear that the first pop-in event may reflect the transition from perfectly elastic to plastic deformation, that is, it is the onset of plasticity in AlN thin film.
Within the scenario of the dislocation nucleation and propagation mechanism, the first pop-in event naturally reflects the transition from perfectly elastic to plastic deformation, that is, it is the onset of plasticity in the GaSe thin film.
Mu, Y., Hutchinson, J.W., Meng, W.J". Micro-pillar measurements of plasticity in confined Cu thin films..". Extreme Mech.
In this study of plasticity in unpassivated Cu thin films, thermal cycling experiments were performed using both wafer curvature equipment and in situ transmission electron microscopy.
Fluid-structure interaction is complex, as the ideal code must be able to handle non-linearities, predict thin walled structural collapse (accumulation of plasticity, damage and failure), in addition to capturing the physical response of water (cavitation, suction, and aeration).
This paper works on the macroscopic modeling of the anisotropic plasticity of a 6260-T6 thin-walled aluminum extrusion with a focus on the large strain multi-axial deformation with Strength-Differential Effect (SDE).
