4 Test method principleThe material under test shall be heated in a stream of dry air and the gases shall be absorbed in 0,1 M sodium hydroxide solution contained in wash bottles. The amount of halogen acid shall then be determined by acidifying the solution with nitric acid, adding a measured volume of 0,1 M…
Summary of Test Methods4.1 The resistance or conductance of a material specimen or of a capacitor is determined from a measurement of current or of voltage drop under specified conditions. By using the appropriate electrode systems, surface and volume resistance or conductance may be measured separately. The resistivity or conductivity can then be calculated when…
1.6 This test method is applicable to the measurement of thermal transmission through a wide range of specimen properties and environmental conditions. The method has been used at ambient conditions of 10 to 40°C with thicknesses up to approximately 250 mm, and with plate temperatures from –195°C to 540°C at 25-mm thickness (5, 6).1.7 This…
6 Apparatus6.1 Testing Machine—A testing machine of the constant rate-of crosshead-movement type and comprising essentially the following:6.1.1 Fixed Member—A fixed or essentially stationary member carrying one grip.6.1.2 Movable Member—A movable member carrying a second grip.6.1.3 Grips—Preferably, a set of self-aligning grips for holding the test specimen between the fixed member and the movable member of…
5 Apparatus5.1 Extrusion plastometer5.1.1 General. The basic apparatus comprises an extrusion plastometer operating at a fixed temperature.The general design is as shown in Figure 1. The thermoplastic material, which is contained in a vertical cylinder, is extruded through a die by a piston loaded with a known weight. The apparatus consists of the following essential…
6.3.4.12 Watertightness a) A 1.5 m length of completed cable with its ends unsealed shall be installed through a gland in a testtank with approximately 150 mm of the cable protruding into the tank. The gland to be used for this test shall be of the type fitted in submarine pressure–tight bulkheads as shown on…
8.1 Test Criteria8.1.1 Materials shall be classified V-0, V-1, or V-2 on the basis of results obtained on small bar specimenswhen tested as described in (8.2.1 – 8.5.6).8.1.2 Some materials, due to their thinness, distort, shrink, or are consumed up to the holding clampwhen subjected to this test. These materials may be tested in accordance…
2 PrincipleA piece of PVC-U pipe, of specified length, chamfered at one end to an angle dependent on its thickness, is immersed for (30 ± 1) min in dichloromethane, at a temperature T specified by the referring standard, to verify that the PVC-U is not attacked at that temperature. For safety reasons, the surface area…
3 PrincipleThe scattered and unscattered light energy of a wavelength of 540 nm to 560 nm passing through a test piece cut from a pipe or fitting is measured and expressed as a percentage of the incident light energy on the test piece. 4 Apparatus4.1 Photoelectric cell, used such that the response of the reading…
4 Apparatus4.1 DSC instrument, and associated software, calibrated.Calibration should be carried out using at least two different metals. An instrumental baseline must be obtained with an empty sample pan and reference pan in place, and with temperature settings and purge gas identical to the settings to be used for the sample analysis.4.2 Aluminium sample pans.4.3…
