10.7 Tensile test10.7.1 Conduit systems declaring tensile strength shall be tested as follows:A sample of conduit and two conduit fittings or terminating conduit fittings are assembled in accordance with the manufacturer’s instructions so that the overall length is approximately 300 mm. The assembly is subjected to a uniformly increasing tensile force reaching the value given…
Apparatus3.1 Pressurizing device, capable of applying and regulating the water pressure in the test piece in asinusoidal or trapezoidal form between pressure limits as specified in the reference standard.3.2 Pressure measurement device, capable of measuring the water pressure in the test piece to an accuracy of ±5 %. The device measurement shall be capable of…
4. Summary of Test Method 4.1 The specimen to be tested and the corresponding reference material are heated from room temperature at a constant rate in a non-purging, high-pressure oxygen environment at a defined pressure. When the specified temperature has been reached, the specimen is then held at that temperature until the oxidative reaction is…
4. Summary of Test Method 4.1 Bent specimens of the plastic, each having a controlled imperfection on one surface, are exposed to the action of a surface-active agent. The proportion of the total number of specimens that crack in a given time is observed. 6. Apparatus 6.1 Blanking Die—A rectangular die or other means suitable…
5 Procedure5.1 Test conditionsCarry out the weightings at standard laboratory temperature (23+-2 C)5.2 Test portionTake three test portions as follows.Weigh, to the nearest 0,000 1 g, approximately 1 g of the material taken from the consignment or from the wall of the pipe or from the fitting, reduced to small fragments.5.3 DeterminationThe determination on each…
4 Principle A test specimen of rectangular cross-section, resting on two supports, is deflected by means of a loading edge acting on the specimen midway between the supports. The test specimen is deflected in this way at a constant rate at midspan until rupture occurs at the outer surface of the specimen or until a…
5 Apparatus 5.1 Test machine 5.1.1 The principles, characteristics and verification of suitable test machines are detailed in ISO 13802. 6 Test specimens 6.1 Preparation 6.1.1 Moulding and extrusion compounds Specimens shall be prepared in accordance with the relevant material specification. When none exists, and unless otherwise specified, specimens shall be either directly compression moulded…
4.2.3 Preparation and conditioning of test pieces a)Conditioning of test pieces shall be carried out as follows: 1)Elevated temperature conditioningNOTE 1 Elevated temperature conditioning is not an ageing treatment. It is used as a means of ensuring stable and consistent test pieces when required. It is used a) when called for in the relevant cable…
4.2 Apparatus 4.2.1 Air oven The test shall be carried out in an oven. The oven shall use natural air circulation. NOTE 1 Forced or continuous air circulation is not required. Ovens fitted with air stirring mechanisms are likely to cause vibration. The oven shall not incorporate any equipment likely to cause vibration, nor shall…
Procedure This test shall be made on the sample length before any other electrical test.All outer coverings shall be removed and the cores shall be immersed in water at ambient temperature for at least 1 h before the test. The d.c. test voltage shall be between 80 V and 500 V and shall be applied…
