Breakage fracture properties

The master curve shows that the life-time is thermally activated. In Fig. 28, two Arrhenius plots for PMMA have been reproduced one from the mechanical P loss peak measurements and the other from the life-time measurements. The life-time plot is the same. Many authors have already associated the P loss peak with the fracture properties Here it is shown that the fibrils breakage itself is controll-... 

Single-Particle Fracture The key issue in all breakage processes is the creation of a stress field inside the particle that is intense enough to cause breakage. The state of stress and the breakage reaction are affected by many parameters that can be grouped into both particle properties and loading conditions, as shown in Fig. 21-58. 

Fig. 7 (A) Carbon nanotube exposed at the breakage edge of a VGCF as (A) grown and (B) heat-treated at 3000 C. The sample is fractured by pulverization and the core diameter is 50 A. (B) These photos suggest a structural discontinuity between the nanotube core of the fiber and the CVD deposited carbon layers. The images show the strong mechanical properties of the nanotube core, which maintains its form after breakage of the periphery. (From Ref...

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