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Tensile test for polyethylene

white graph
This sample is pure polyethylene. Note all the video speeds have been accelerated by 4 times.

Tensile test for polyethylene (dyed)

black graph
The dye may affect the mechanical property of polyethylene.

  

Tensile test for polypropylene

brown graph
The polypropylene is more brittle and fails by fracture.

  

Tensile test for high density polyethylene

red graph
The density of polyethylene can have a significant effect on its mechanical property. This high denisty polyethylene is much stronger.

  

Tensile test for low density polyethylene

yellow graph
The low density polyethylene is much weaker compared to the high density one.

  

Load and displacement curves for different polymer samples

final graph

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