BSI PD ISO/TS 16479:2012
$142.49
Thermoplastics pipes for the conveyance of fluids. Determination of the slow cracking resistance of pipes and fittings using the Notched Ring Test (NRT)
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 30 |
This Technical Specification 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. This Technical Specification specifies the method of testing using notched ring specimens directly obtained from pipes or fittings.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 9 | 4 Principle |
| 10 | 5 Apparatus 5.1 Loading apparatus 5.2 Ring deflection measuring device |
| 11 | 5.3 Temperature chamber 5.4 Test medium 5.5 Timing device 5.6 Microscope |
| 12 | 5.7 Notching apparatus |
| 14 | 6 Test specimen 6.1 Specimen geometry and dimensions 6.2 Specimen preparation |
| 16 | 6.3 Specimen conditioning 7 Procedure 7.1 Conditioning 7.2 Load application |
| 17 | 7.3 On-set slow cracking time detection 7.4 Notch depth measurement 7.5 Number of specimens 8 Test report |
| 19 | Annex A (informative) On-set slow cracking time detection |
| 23 | Annex B (informative) Stress intensity factor plot |
| 27 | Annex C (informative) Flexure load estimation |
| 28 | Bibliography |
