4 Apparatus4.1 Compression tester, motor-driven, mechanical or hydraulic, platen-type, capable of applying load through uniform movement of one or both platens at a relative speed of 10 ± 3mm/min.The platens shall be One platen shall remain horizontal, within two parts per 1000 at all times during the test.The other platen shall be either rigidly mounted…
1 Scope1.1 This specification covers high density polyethylene (HDPE) geomembranes with a formulated sheet density of 0.940 g/ml, or higher, in the thickness range of 0.75 mm (30 mils) to 3.0 mm (120 mils). Both smooth and textured geomembrane surfaces are included.1.2 This specification sets forth a set of minimum, physical, mechanical and chemical properties…
6 Apparatus6.1 Penetrometer, for applying the standard needle to the surface of the sample specimen and for measuring the extent of penetration at the conclusion of the test. The penetrometer shall be constructed in such a manner that the accurate placement of the tip of the needle at the level surface of the specimen may…
6 Method E4: Impact6.1 ObjectThe purpose of this test is to determine the ability of an optical fibre cable to withstandimpact.6.2 Sample6.2.1 Sample lengthThe sample length shall be sufficient to carry out the specified test. When only physicaldamage is to be evaluated, the length may range from 1 m (for example for small diameterjumper cords…
6 Test methods 6.1 Preparation of test specimens 6.1.1 Temperature Prepare all test specimens at (23 ± 2) C. 6.1.2 Amalgamation The mass of the amalgam mix shall be sufficient to make a test cylinder (8 ± 1) mm high after condensation with a diameter according to figure 1. If necessary, adjust the height of…
7 Method E3: Crush7.1 ObjectThe purpose of this test is to determine the ability of an optical fibre cable to withstand crushing.7.2 SampleThe sample shall be of a length sufficient to carry out the specified test.7.3 ApparatusThe apparatus shall allow a sample of cable to be crushed between a flat steel base plate and a…
6 Performance requirements 6.1 Operating torque The measured operating torque shall not exceed the values given in Table 7. The torque required for the preliminary cycle shall not be greater than 1,5 times for valves up to DN 15 and 2,5 times for DN 20 up to DN 100 of the values given in Table…
6 Method E2: Abrasion6.1 Method E2A: Abrasion resistance of optical fibre cable sheaths6.1.1 ObjectThe abrasion resistance of optical fibre cables has two aspects:a) the ability of the sheath to resist abrasion;b) the ability of cable markings to resist abrasion.The purpose of this test is to determine the ability of an optical fibre cable sheath to…
3 Method A — De Mattia method 3.1 Principle A rectangular strip of coated fabric is folded twice so that its long edges meet forming a strip measuring 12.5 mm x 12.5 mm. This folded strip is mounted between a pair of flat grips, one of which reciprocates, causing the folded test piece to be…
Figure A.1 and Figure A.2 give useful examples of microduct fibre units, microducts, and protected microducts. 5 Microduct fibre unit5.1 Tests applicableTests that are applicable for mechanical and environmental performance are given in Table 2. The above tests may need to be modified for use with these cables. In particular, special care needs to be…
