Load Displacement to stress strain

[8-)]

Hello, so here is my problem.

Homework Statement

I am given tensile data, which is displacement (mm) and load (kgf). also I am given width(mm), thickness(mm), gauge length (mm) and cross-head speed (mm/min). How do i make a stress strain curve from this?

The Attempt at a Solution

So far i have multiplied width by thickness to find cross sectional area (in metres squared). Then i divide load (kgf) *9.8/cross sectional area (m^2) to find stress. and displacement (metres) over gauge length (metres) to find strain. I am getting around 65,000,000 pascals for maximum stress at around 40% strain. its for PVC. does that make sense?

thanks!

 

[pongo38]

not compared with steel whose weakest strength would be around 250,000 pascals. (Check this yourself from some independent source)

 

[8-)]

Yeah it seemed off, where am i messing up?

 

[john.phillip]

If you search www.matweb.com for PVC, and read the material specs carefully, you may find data to compare with your results.