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Mechanical Test: Ring Compression Test

The following images help illustrate the ring compression test.


Compression Testing of Polypropylene Tube


Grid-Dot Strain Analysis


An imprinting grids technique on tubes
for strain measurement



A regular dot structure is marked by
a stencil marker technique

 

The initial dot diameter as d0=1.5mm distance between the dots was 3 mm. The initial tube length was L0=200 mm.


 

Compression Testing of Polymer Tube


At an elevated temperature and various test speeds


Shrinkage of polypropylene part


Strain development along the gauge length


Tube Thickness Compression Test


Specimen / test setup