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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