Farhan Ansari

4 Questions 10 Answers 0 Followers

Questions related from Farhan Ansari

What is the physical significance of the strain hardening coefficient (n)?

If we calculate the strain hardening coefficient using the equation stress=K*strain^n, what do the terms K and n imply. I understand what their definition is and how to calculate them, but what is...

02 February 2015 5,057 0 View

What is the best way to determine the 'fracture toughness' of thin films (polymer composites)?

The conventional methods for determining K(IC) values cannot be applied to thin films as the plane strain conditions are not met. What is the next best way to characterize the stress intensity...

05 May 2014 5,193 2 View

Solution casting vs extrusion - which leads to stronger materials?

Why do properties of some polymers depend on the way in which the specimens are prepared. For ex, the extruded Polyvinyl Acetate sheets are much stronger (at least an order of magnitude) than the...

01 January 2014 8,339 10 View

How do 'interfacial characteristics' affect the ageing of an amorphous polymer (PVAc)?

PVAc (M WT 80000 Da), composite with nanocellulose fibrils prepared by solvent casting. I observe a drastic decrease in the Tg of nanocomposites, 1 day after they are prepared; after which the Tg...

01 January 2014 5,527 5 View