Deformation, fracture and fatigue are important mechanical phenomena in both metals processing and use. The role of dislocations in and the effects of microstructural features on the plastic ...

Because of their very large molecular weight (~ 10 6) polymers behave differently from the low molecular weight metals during plastic deformation leading to a ductile fracture. The top diagram shows a ...

In developing suitable constitutive equations for plastic materials, two basic approaches have been used. The first is the so-called total-strain or deformation type. Deformation theories of ...

Prior to this stress-strain condition the plastic deformation occurs throughout the sample and the material deforms under constant volume conditions. At the UTS deformation becomes localized in the ...