MODIFIED PLAIN STRAIN GROOVED TENSILE TEST TO EVALUATE LARGE DIAMETER PE PIPES
Plastic Pipes Conference Association # 2021 Amsterdam
Thomas R. Kratochvilla, Patrick Grünbeck, Christoph Bruckner, Raimund Eremiasch, Harald Wilhelm, Mario Vukelja
In the last decades pipe dimensions of extruded PE pipes have reached new orders of size. Today, PE pipes with outer diameters of up to DN/OD 3500 mm are produced and used for pressure pipe applications like seawater intake/discharge, outfall, sewage and industrial process piping systems.
To test the long-term performance of PE pipes the internal pressure test has been successfully used in the last decades. To evaluate the long-term performance of large diameter PE pipes an alternative test method which correlates with the internal pressure test was developed in the last years. In 2012 the approach to evaluate a modified PSGT test according ISO 23228 was started. Data for different pipe diameters were generated using the modified PSGT test at 20 °C and 80 °C and compared with internal pressure test results. A correlation was established and first reference points for evaluating large diameter pipes generated.