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- W2765509544 endingPage "93" @default.
- W2765509544 startingPage "74" @default.
- W2765509544 abstract "Abstract The discovery of tough hydrogels of many chemical compositions, and their emerging applications in medicine, clothing, and engineering, has raised a fundamental question: How do hydrogels behave under many cycles of stretch? This paper initiates the study of the fatigue behavior of the classic PAMPS/PAAM double network hydrogels discovered by Gong and her co-workers [25]. We reproduce the hydrogels, and prepare samples of two types, with or without a crack cut before the test. When an uncut sample is subject to cyclic stretches, internal damage accumulates over thousands of cycles until a steady state is reached. When a cut sample is subject to cyclic stretches, the crack extends cycle by cycle if the amplitude of stretch is above a certain value. A threshold of energy release rate exists, below which the crack remains stationary as the sample is cycled. We find a threshold around 400 J/m2 for hydrogels containing PAAM networks of a low density of crosslinkers, and around 200 J/m2 for hydrogels containing PAAM networks of a high density of crosslinkers. The experimental findings are compared to the Lake-Thomas model adapted to the double-network hydrogels." @default.
- W2765509544 created "2017-11-10" @default.
- W2765509544 creator A5000130240 @default.
- W2765509544 creator A5005162492 @default.
- W2765509544 creator A5016809864 @default.
- W2765509544 creator A5018684189 @default.
- W2765509544 creator A5032091622 @default.
- W2765509544 creator A5045619595 @default.
- W2765509544 creator A5051797466 @default.
- W2765509544 date "2018-01-01" @default.
- W2765509544 modified "2023-10-17" @default.
- W2765509544 title "Fatigue of double-network hydrogels" @default.
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