5 Method E3: Crush5.1 ObjectThe purpose of this test is to determine the ability of an optical fibre cable to withstand crushing for long term and for short-term loads.NOTE Method E3A corresponds to the default method, Method E3 Crush, defined in IEC 60794-1-2:2013.5.2 SampleThe sample shall be of a length sufficient to carry out the…
4 PrincipleIt is possible to determine the ash of an organic material by three main methods:a) Direct calcination, i.e. by burning the organic matter and heating the residue at high temperature untilconstant mass is reached (method A).b) Calcination after sulfation, which may be carried out by two different procedures:⎯ With sulfuric acid treatment after burning,…
5 Pendulum method5.1 Apparatus5.1.1 GeneralThe rebound resilience shall be measured by means of an apparatus consisting of a pendulum-like onedegree-of-freedom mechanical oscillatory device and a heavy and secure test piece holder.The two items shall be suitably fixed together for rebound resilience measurements, and either item can be removed for purposes of adjustment or checking of…
10.2 Compression testReplacement:10.2.1 Conduits are subjected to a compression test.NOTE: Compression test on fittings is under considerationThe test for conduits containing non-metallic materials is not started until 10 days after manufacture.10.2.2 Samples are (200 ± 5) mm long. 10.2.3 Before the test, the outside and inside diameters of the samples are measured as specified in…
25 Method F5: Water penetration25.1 ObjectThis test applies to continuously water-blocked cables. The purpose is to determine the ability of a cable to block water migration along a specified length. Compliance shall be checked on samples of cable using one of the two following methods (F5A or F5B), as stated in the detail specification. Method…
6.5 Tension 6.5.1 Three samples of MPT shall withstand a tension of 156 N (35 Ibf) for one minute applied in accordance with 6.5.5 – 6.5.6 Each sample shall be approximately 457 mm (18 inches) in length Following the test, there shall be no splits, cracks, tears, separation of convolutions, or other openings when it…
First thing we need to do is to analyze pure polymer. In this example, polymers A and B are heated up in DSC, and the heat for melting is recorded. It is a specific enthalpy meaning measurement is presented as per mg of material. We use this information to quantify the mixture contents. Here is…
4 Apparatus4.1 Testing machine capable of applying load in vertical and/or horizontal direction and with a measuringaccuracy of ± 3 %.4.2 The accuracy of positioning of components shall be within ± 2 mm.4.3 Devices to have the pallets secured for test 6.3 and 6.5.4.4 Instrument for measuring deformation with an accuracy of 0,2 mm.4.5 Determination…
6 Apparatus6.1 Depth Gauge—The depth gauge shall consist of three components that conform the requirements of this section; a dial indicator, a setting block and a contact point with extension. 6.1.1 Dial Indicator—capable of measuring to depth of at least 2.5 mm [0.10 in.] with an accuracy of 60.025 mm [0.001 in.].6.1.2 Setting Block—the setting…
11.1 ObjectThis test method is intended to establish the ability of a fibre optic cable to withstand mechanical twisting. The primary purpose of this procedure is to measure any variation in the optical power transmittance of a fibre when the cable is subjected to torsional forces external to the cable jacket. A secondary purpose is…
