Abstract
Pipes and elbows are important components in any piping systems for transportation of water. These structures are subjected to complex loads taking into account their geometrical configuration and the multiplicity of the loading conditions in service. The origin of failure of these mechanical components is directly related to the presence of defects. The principal objective of this work is to analyze the severity of defects on high density poly-ethylene pipe widely used for water piping networks.
An experimental program, including longitudinally notched (125 mm) PE100 pipe specimens with 11.4 mm thickness containing an external notch with four different notch depths (a), was developed. The three dimensional finite element method based on the computation of the J integral was used to analyze the fracture behaviour of these structures.
The numerical proposed method permit to calculate the crack initiation pressure in PE 100 pipes with a longitudinal external defect. Numerical results were experimentally validated by PE100 notched pipes bursting tests.
The predicted crack initiation pressure agrees well with the test results.
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Bouaziz, M.A. et al. (2015). Failure Analysis of HDPE Pipe for Drinking Water Distribution and Transmission. In: Chouchane, M., Fakhfakh, T., Daly, H., Aifaoui, N., Chaari, F. (eds) Design and Modeling of Mechanical Systems - II. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-17527-0_41
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DOI: https://doi.org/10.1007/978-3-319-17527-0_41
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