Some factors affecting Toughness in UPVC Pipe Materials

Author(s) : David Becerril García, Jacinto Cortés-Pérez, Ian D. Moore

Joint performance of joints in gravity flow buried pipelines is very important since joint failure could produce structural or service limits to the system. Standards have been developed to evaluate that joints have the necessary structural and leakage capacities which specify test methods that are not clear and do...

Author(s) : Fitzpatrick, Mount, Smyth, Stephenson

The robustness of PVC-U pipes can be increased by blending PVC with chlorinated polyethylene (CPE). By varying the level of incorporation a spectrum of properties can be achieved. Data are presented which indicate that the tensile yield stress decreases with increasing amounts of CPE, whilst the fracture toughness,...

Author(s) : Wood, Moore

The erosion of pipe materials in slurry flow streams occurs through a variety of wear processes. As a result, the comparative wear resistance of materials is extremely difficult to predict from a knowledge of basic physical and engineering properties. Design and selection criteria must hence be based on empirical...

Author(s) : Moore, Stephenson

A model is established for the calculation of flexural rigidity (EII of pipe sections that contain a solid skin - foamed core - solid skin structure. Stiffness of t h e pipe can be calculated from (EII. The model accommodates different and similar materials in the skin and the core, a range of section dimensions...

Author(s) : Moore, Stephenson, Tagger

A number of UPVC pressure pipes .of different sizes and classes, have been characterised in materials. Long term testing was performed on specimens under a range of loading regimes, including hydrostatic burst testing, long term fracture toughness testing and dynamic fatigue. In all instances the behaviour...

Author(s) : Moore, Prediger, Stephenson

Fracture mechanics techniques are applied to UPVC pipe compositions in order to obtain quantitative and credible toughness results. The influence of polymer molecular weight and pipe age-in-service is then examined.The techniques are also applied to considerations of material toughness and pipe toughness.Plastics...

Author(s) : Moore, Sprecher

Power engineers have an urgent need for the extreme corrosion resistance which GRP can provide. Engineers in the power industry are finding that GRP materials have the properties needed to meet the new requirements - and that they can do so at reasonable cost. We believe that the power industry will continue to be a...