Pipes in Extreme Conditions
Plastic Pipes Conference Association # 1979 Brigthon
Gray
Pipework constructed in glassfibre composites is now used in many Process Industries. The design methods derived for these materials have shown that they exhibit characteristics not usually considered in general engineering design.
These concepts are briefly described together with their relevance in the overall design of pipework systems where reference is made to the established analytical procedures used for metallic pipework.
Glassfibre reinforced plastics have gained wide acceptance in many Industries as engineering materials, and have probably shown their highest potential in the Chemical Plant Process Judustry where they generally have to exhibit both optimum chemical resistance and structural reliability.
since difierent forms of glass fibre reinforcements may have either isotropic or anisotropic properties, their use in a composite structure can often allow a degree of freedom of design rarely achieved with metallic materials.
However, in detail desipn analysis their use can show the deficiencies of conventional methods of analysis, since in the main these have been established for isotropic materials and to translate them for anisotropic properties often prohibitedly complicates any theory or calculation. Because of the effects of anisotropy often only field experience may provide data on which to postulate the possible performance of different combinations of reinforcement.
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