4 PrincipleThe test consists in measuring the force required to tear a specified test piece, in continuation of the cutor nick already produced in the test piece or, in the case of method B, procedure (a), completely acrossthe width of the test piece.The tearing force is applied by means of a tensile testing machine, operated…
6 Apparatus and Materials6.1 Flammability Tester,with a separate timer capable of providing flame impingement on the specimen for 1 + 0.01 s as shown in Fig. 1 or an equivalent electrically operated tester equipped with an automatic electric timer, as described in Annex A1. Testers are normally supplied with specimen holders.6.2 Brushing Device, as shown…
First lets take a look at the tests need to be done on the pipe itself according to this norm: 5 General characteristics5.1 AppearanceWhen viewed without magnification the internal and external surfaces of pipes shall be smooth, clean and free from scoring, cavities, and other surface defects to an extent that would prevent conformity to…
3 Apparatus3.1 Drying oven or equivalent device, capable of maintaining the temperature at (105 ± 2) °C at the position for the cup(s) (see 3.2 and 5.4).3.2 A cylindrical glass weighing cup, with a diameter of 35 mm capable of containing a test piece (see 4.1), a minimum volume of 50 ml and a corresponding…
Q1- Pressure is fluctuating in two of the lines. The set pressure was 6.4 bar, and the pressure on the graph was between 6 and 7 bar. A- Actually, when a line pressure is reached to the set pressure and the pressure is in the range of [Set+-0.2] or [Set+-0.4], depending on the model of…
Test Methods and Specimens8.1 Introduction:8.1.1 Three basic vibratory methods exist:8.1.1.1 Forced vibration of a nonresonant system involving only the specimen,8.1.1.2 Free vibration of a resonant system involving the specimen and a mass, and8.1.1.3 Forced vibration of the above resonant system.8.1.2 The first and third can be broken down further into two kinds of apparatus, those…
5 Apparatus 5.1 Impact surface, which should be either: a) a plane inclined to the vertical at 10° ± 1° (for the inclined plane test), or b) a plane vertical to within 1° (for the horizontal or pendulum test). The dimensions of the impact surface shall be greater than those of the impacting face, or…
3 Apparatus 3.1 GeneralTheapparatus shall consist of a jig or any other arrangement capable of: a)applying the specified diametric and/or angular deflection; b)applying the specified test pressure(s), positive or negative; c)maintaining the test assembly in the required position throughout the test; d)resisting the forces resulting from the mass of the water in the test assembly…
5 Apparatus5.1 Electric Furnace, at least 20 cm (7.9 in.) long suitable for use with the tubing described in 5.2.5.2 High Temperature Glass Combustion Tube, 4 of appropriate diameter and approximately twice as long as the furnace described in 5.1.5.3 Stoppers—Two rubber or neoprene stoppers, to fit the tube described in 5.2, unless the tube…
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…
