5.2 Vertical flame test 5.2.1 A specimen of the finished conduit shall be subjected to five 15-s applications of flame. the period between applications is 15 s. The specimen shall not be acceptable if it: a) Continues to flame longer than 10 s, following the fifth application of the flame: or b) Shows more than…
2 PrincipleA joint assembly as test piece consisting of a PVC-U pipe mounted into a PVC-U socket is subjected, within a specified temperature range, to a specified internal pressure regime for a specified test period whilst the pipe is also subject to an angular deflection in the socket. While under pressure the test piece is…
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…
1 Scope This standard specifies a method for testing the resistance of joints to pressure cycling. It is applicable to piping systems based on rigid or flexible thermoplastics pipes intended to be used in hot and cold water applications. 3 Apparatus 3.1 Pressurizing device, capable of applying and regulating the water pressure in the test…
2 PrincipleA test assembly of pipes and fittings (see Figure 1) is subjected to temperature cycling by the passage ofwater under pressure using hot and cold water alternately, for a specified number of cycles.While being subjected to temperature cycling, parts of the assembly of pipes and fittings are maintained under tensile stress and/or flexural strain…
4 Requirements4.1 Approach 1No fog shall be visible after the test has ended in accordance with 5.1.4.4.2 Approach 2No permanent visual condensation shall be permitted in accordance with 5.2.4. 5 Test methods5.1 Approach 15.1.1 PrincipleTest specimens are placed in a chamber that is controlled at (50 ± 3) °C. A lamp is positioned in the…
X2.4 Shrinkage of Conditioned Yarns and Cords at Elevated Temperature: X2.4.1 Summary of Test Method—The initial length of a specimen of yarn or cord that has been permitted to relax in a conditioned atmosphere is determined while under a specified force. After exposure of the loaded specimen to a specified temperature until its length becomes…
Sample preparation for plastic sector depends on the material properties and shape of material is going to be tested. First question is that what do you want to test? if it is a raw material or it is finished product? If you want to test raw material, be sure that you will be testing the…
38. Stiffness of Fabric 38.4 Apparatus:38.4.1 CRE-Type Tensile Testing Machine.38.4.2 Loading Cell, 20 N (2000 gf).38.4.3 Specimen Holder—An 85-mm (33⁄8-in.) square frame made of 5-mm (1⁄4-in.) diameter steel rod. In the middle of one side is a hook made of 3-mm (1⁄8-in.) rod diameter for connecting the holder to the loading cell. In the middle…
