Thermoplastics pipes for the conveyance of fluids. Determination of the stress-rupture resistance of moulding materials using plain strain grooved tensile (PSGT) specimens
This International Standard specifies a method for the determination of the time-to-failure of thermoplastics resins and compounds for piping and fitting applications by the use of a plane strain grooved tensile specimen in a stress-rupture test.
The grooved tensile specimen produces a biaxial state of stress on uni-axial loading, which is taken to be indicative of the stress conditions found in pressurized solid-wall plastics pipes. The ratio of the stress in the axial direction to the transverse direction approximates that for a pressurized end-capped solid-wall pipe specimen[4]–[7].
It is intended that the data generated on these specimens be utilized to determine the stress-rupture (time to failure) resistance of moulding materials for pipes and fittings as well as experimental piping resins.
This method is also applicable to stress-rupture evaluations of pipes which are difficult to test, e.g. larger diameter pipes, including their batch release tests.
This International Standard is not intended to replace the stress-rupture test of ISOÂ 1167[2], which uses internally pressurized end-capped pipes.
| SDO | BSI: British Standards Institution |
| Document Number | ISO 23228 |
| Publication Date | Oct. 31, 2011 |
| Language | en - English |
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| Supercedes | |
| Committee | PRI/88 |
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