Continuum analysis of ideally plastic films

The issue of elastic strain relaxation has been discussed up to this point within the framework of formation, growth and interaction of glide disloca- 

Continuum descriptions of the evolution of stress, substrate curvature and plastic deformation also provide a useful and broad framework with which experimental observations of strain relaxation in thin films on substrates can be assessed. As shown in later sections of this chapter, such analyses provide some tools with which the plastic deformation response can be experimentally determined by recourse to methods such as substrate curvature measurement, x-ray diffraction or indentation. 

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