Equi-biaxial fatigue testing of EPM utilising bubble inflation

Authors

Mark Johnson, Technological University Dublin
Niall Murphy, Technological University DublinFollow
Ray Ekins, Technological University DublinFollow
John Hanley, Technological University DublinFollow
Stephen Jerrams, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

2.3 MECHANICAL ENGINEERING

Publication Details

Polymer Testing - Open Access journal (Elsevier)

https://www.sciencedirect.com/journal/polymer-testing

Abstract

This paper describes an equi-biaxial tension fatigue test system which utilises the bubble inflation method to subject elastomers to equi-biaxial fatigue loading between user-defined limits of pressure, volume, stretch ratio or stress. The test system integrates a hydraulic inflation system, a high speed vision system and a control system. The high-speed vision system allows the stretch ratio and stress acting on the test specimen to be evaluated in real-time during testing. This in turn allows either stretch ratio or stress to be used as a direct control limit. In this research, constant maximum engineering stress control tests have been carried out to evaluate the suitability of the developed dynamic bubble inflation system for equi-biaxial fatigue testing of elastomers. The resulting test data was used to produce Wöhler (S/N) curves and stress/stretch ratio plots for ethylene-propylene rubber (EPM).

DOI

https://doi.org/10.1016/j.polymertesting.2016.05.017

Recommended Citation

Mark Johnson, Niall Murphy, Ray Ekins, John Hanley, Stephen Jerrams, Equi-biaxial fatigue testing of EPM utilising bubble inflation, Polymer Testing, Volume 53, 2016, Pages 122-131, ISSN 0142-9418, DOI: 10.1016/j.polymertesting.2016.05.017.

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.