ISO/TS 16479:2012

Thermoplastics pipes for the conveyance of fluids — Determination of the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT)

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.

Tubes en matières thermoplastiques pour le transport des fluides — Détermination de la résistance des tubes et raccords à la propagation lente de la fissure au moyen d'essais sur sections fendues

General Information

• Status: Published
• Publication Date: 30-Sep-2012
• ICS: 23.040.20 - Plastics pipes
• Technical Committee: ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
• Drafting Committee: ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 26-Jan-2024

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 16479
First edition
2012-10-01
Thermoplastics pipes for the
conveyance of fluids — Determination
of the slow cracking resistance of
pipes and fittings using the Notched
Ring Test (NRT)
Tubes en matières thermoplastiques pour le transport des fluides —
Détermination de la résistance des tubes et raccords à la propagation
lente de la fissure au moyen d’essais sur sections fendues
Reference number
ISO/TS 16479:2012(E)
©
ISO 2012

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ISO/TS 16479:2012(E)
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ii © ISO 2012 – All rights reserved

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ISO/TS 16479:2012(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Loading apparatus . 3
5.2 Ring deflection measuring device . 3
5.3 Temperature chamber . 4
5.4 Test medium . 4
5.5 Timing device . 4
5.6 Microscope . 4
5.7 Notching apparatus . 5
6 Test specimen . 7
6.1 Specimen geometry and dimensions . 7
6.2 Specimen preparation . 7
6.3 Specimen conditioning . . 9
7 Procedure.
...