Yield stress is the stress at which the breakdown of the structural frame occurs, and the related strain is the yield strain. Figure 1 represents the mechanical analogues depicting the process with ...

This file type includes high resolution graphics and schematics when applicable. However, this relationship between stress and strain in a material is linear only when the force applied is within ...

IT has been found that a steel ball dropped on to a thick flat plate of ‘Perspex’ produces an electrostatic charge over the contact area. This effect has been investigated with the view of developing ...

All manufactured plastics are exposed to mechanical loading conditions throughout their operating lifetime. Mechanical failure can be prevented by determining and routinely verifying the mechanical ...

Three samples of shale rock, two from the Eagle Ford play and one from the Haynesville play, were successfully tested by instrumented indentation using a Nano Indenter G200 from KLA. Results were ...