ISO/TS 16479:2012 PDF
Thermoplastics pipes for the conveyance of fluids — Determination of the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT)
Thermoplastics pipes for the conveyance of fluids — Determination of the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 21
- Дата публикации:
- 1 октября 2012 г.
- Издание:
- ISO TS 16479 edition 1 version 1
- ICS:
- 23.040.20
ISO/TS 16479:2012 determines the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT) which is a method for determining the slow crack resistance of thermoplastics resins and compounds in pipe form and/or finished products (e.g. pipes and fittings) from which a ring specimen can be cut and notched. The test is performed under sustained constant loading in a test medium at a specified temperature and the time to the on-set of slow cracking is measured. This method applies to the rings from pipes or fittings having a wall thickness greater than 5 mm. ISO/TS 16479:2012 specifies the method of testing using notched ring specimens directly obtained from pipes or fittings.
Abstract
Overview
ISO/TS 16479:2012 specifies the Notched Ring Test (NRT) method for determining the slow cracking resistance of thermoplastics pipes and fittings. The method uses ring specimens cut directly from pipes or fittings (wall thickness > 5 mm), which are notched and subjected to sustained, constant flexure loading in a controlled test medium and temperature. The primary output is the time to on‑set of slow cracking measured from the ring deflection curve.
Keywords: ISO/TS 16479:2012, Notched Ring Test, NRT, slow cracking resistance, thermoplastics pipes, ring specimen.
Key topics and technical requirements
- Scope & specimen: Tests use full ring specimens removed from finished pipes or fittings; applicable to wall thicknesses > 5 mm.
- Notching: Sharp inner‑wall razor notches (tip radius
Технические детали
- Технический комитет
- ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
- SKU
- ISO/TS 16479:2012
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