Revue Nature et Technologie
Volume 8, Numéro 2, Pages 15-20
2016-06-30
Failure Assessment Of Cracked Pipe Due Transient
Authors : Hassani M. . Bouledroua O. . Hadj Meliani M. .
Abstract
The water distribution networks during their operation undergo to different type of damage that leads to degradation of the material, and possibly to the initiation of cracks which can propagate under some conditions such as transient phenomenon which causes the appearance of very high pressure leads to disastrous consequences for the integrity of the installation, and also considerable impact on ecological. In order To reduce the risk of rupture and established a reliable method decision that we can use to predict the acceptable defect when the transient flow occur, a failure assessment diagram (FAD) have been used to calculate the safety factor with finite element method applied to the fracture mechanics to calculate the stress intensity factor. The transient flow model has been established based on the mass, momentum conservation laws, the system of hyperbolic partial differential equations has been solved by the method of characteristics.
Keywords
Cracks, Failure assessment diagram, water hammer, Method of Characteristics
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