Predicting Functional Failure Pressures in Filament Wound GRP Mortar Pipes

Predicting Functional Failure Pressures in Filament Wound GRP Mortar Pipes

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Part of #Predicting Functional Failure Pressures in Filament Wound GRP Mortar Pipes# :

Publishing year : 2013

Conference : Biennial International Conference on Experimental Solids Mechanics

Number of pages : 6

Abstract: Due to the low weight, high corrosion resistance, non-toxicity, low internal friction, longer service life and low thermal and electrical conductivity, glass fiber reinforced polyester (GRP) pipes are used in a wide range of applications such as water supply , Waste water transmission, drainage, irrigation network and power plants. Mostly pipe pipe manufacturers often have to design thicker walls in pipe constructions to increase the pipe's stiffness against external transverse loading especially for buried pipe applications. A simple and cost-effective way to increase the wall thickness is to use an impregnated filler layer between FRPs, instead of increasing the thickness solely by FRP layers. The purpose of this paper is to investigate the GRP pipe damage mechanism that has a sand core layer exposed to Internal pressure In this regard, a parametric progressive damage modeling is developed in ANSYS commercial. The influence of core thickness on first-ply pressure and the functional failure pressure (at which weepage occurs) is then studied. To validate the developed modeling, the results obtained from theoretical modeling are compared with experimental results from hydrostatic tests and a good agreement is observed.