Load Displacement to stress strain

AI Thread Summary
To create a stress-strain curve from tensile data, the cross-sectional area is calculated by multiplying width and thickness, then converting to square meters. Stress is determined by multiplying the load in kgf by 9.8 and dividing by the cross-sectional area. Strain is calculated by dividing displacement by the gauge length. The resulting maximum stress of around 65,000,000 pascals at 40% strain appears inconsistent when compared to typical PVC values, which suggests a potential error in calculations. It is recommended to verify results against material specifications from reliable sources like matweb.com for accurate comparisons.
8-)
Messages
2
Reaction score
0
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!
 
Physics news on Phys.org
not compared with steel whose weakest strength would be around 250,000 pascals. (Check this yourself from some independent source)
 
Yeah it seemed off, where am i messing up?
 
If you search www.matweb.com for PVC, and read the material specs carefully, you may find data to compare with your results.
 
Back
Top