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- W3096057029 abstract "Abstract Polyethylene (PE) pipe is widely used in water supply and gas transportation engineering. Its fracture behavior is very important for the safe operation of the pipeline. The objective of this work is to simulate the slow crack growth (SCG) process of PE pipe material via a time dependent crack-tip process zone model. To achieve this end, the crazing damage caused by stress concentration at crack tip of PE material is taken into account, the stress on the bulk/craze interface layer is supposed to be uniformly distributed due to the micro necking mechanism of the layer, and a linear crack growth kinetics is used. In order to describe the delay characteristics of the fracture process of PE materials, the fracture surface energy is considered as an exponential decay function of time, which is attributed to the creep damage of the craze fibrils. A simulation algorithm of the proposed process zone model is suggested using iterative method. The model is verified by comparing the simulation with the discontinuous SCG behavior reported in the literature." @default.
- W3096057029 created "2020-11-09" @default.
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- W3096057029 date "2020-09-01" @default.
- W3096057029 modified "2023-09-23" @default.
- W3096057029 title "A Time Dependent Process Zone Model for Slow Crack Growth of Polyethylene Pipe Material" @default.
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- W3096057029 doi "https://doi.org/10.1088/1742-6596/1634/1/012140" @default.
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