Mechanical behavior of GRP pressure pipes with addition of quartz sand filler

SAGE Publications - Tập 45 Số 6 - Trang 717-726 - 2011
José Daniel Diniz Melo1, Flamínio Levy Neto2, Gustavo de Araujo Barros1, Fausto Nogueira de Almeida Mesquita2
1Department of Materials Engineering, Universidade Federal do Rio Grande do Norte (UFRN), 59072-970 Natal — RN, Brazil
2Department of Mechanical Engineering, Universidade de Brasília, UnB, Asa Norte, 70910-900 Brasília — DF, Brazil,

Tóm tắt

In comparison with steel, concrete, and polymeric pipes, glass-reinforced plastic (GRP) pressure pipes use more expensive raw materials. Thus, despite of their attractive structural performance, mainly in terms of mechanical strength combined with low weight, the higher cost can be a limitation in many applications. In this scenario, an alternative to reduce the final price of GRP pipes is the addition of quartz sand filler. In this experimental and numerical study, filament-wound E-glass/polyester pipes with nominal inside diameter of 300 mm and wall thickness of 5.7 mm were produced with the incorporation of quartz sand as filler and tested to failure under internal pressure. The mechanical behavior of the composite pipes was evaluated experimentally, throughout short-time hydraulic failure pressure tests, as well as using finite element analysis (FEA). In the FEA simulations, the shell wall was modeled as an axisymmetric layered orthotropic material. A good agreement, varying from 96% to 98%, was obtained between the average hydraulic failure pressure measured and FEA predicted failure pressures, using Tsai—Hill and Hoffman failure criteria, respectively.

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SAGE Publications

Tập 45 Số 6

717-726

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