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…
AHP’s reliable and easy to use materials testing systems are employed by the adhesive industry to test the peel strength, bonding, and shear properties of adhesives. Types of adhesive materials that are commonly tested include pressure sensitive adhesive (PSA) tapes, epoxies, sealants, and thermosetting structural adhesives. Our pull testing machines have many features specifically designed…
15 Method E11: Bend15.1 ObjectThe purpose of this test is to determine the ability of an optical fibre cable or cable element to withstand bending around a test mandrel.NOTE This test may be utilized at any specified temperature, including the low or high temperature limits for the cable.15.2 SampleThe sample shall be terminated at each…
5 Apparatus 5.1 Measuring unit, with temperature and water supply control, consisting of a metal plate approximately 3 mm thick with a minimum area of 0,04 m2 (e.g. a square with each side 200 mm in length) fixed to a conductive metal block containing an electrical heating element [see figure 1, items (I) and (6)]….
4.2 ApparatusThe apparatus consists of the following parts:a) An oven capable of maintaining the temperature and tolerance specified.b) Grips shall be provided, such that each test piece can be suspended from an upper grip inthe oven and weights attached to a lower grip attached to the test piece.NOTE When testing tubular test pieces, the fixing…
