Fatigue fracture of hydrogels
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Fatigue fracture of hydrogels
- 发表刊物：
- Extreme Mechanics Letters
- 摘要：
- Rapid advances are taking place to develop hydrogels of high stretchability and toughness, but fatigue
fracture has not been studied for any hydrogels. This negligence hinders the development of hydrogels
and their applications. Here we initiate a study of fatigue fracture of hydrogels.Wechoose polyacrylamide
hydrogel as a model material. To place fatigue fracture in context, we apply monotonic, static, and cyclic
load, and observe three types of fracture behavior: fast fracture, delayed fracture, and fatigue fracture.
Below the critical load for fast fracture, we find two distinct thresholds, one for delayed fracture, and the
other for fatigue fracture. The fracture behavior of hydrogel is sensitive to both the amplitude of load and
the concentration of water. We relate the experimental observations to the molecular picture of swollen
polymer networks. Fatigue fracture of hydrogels is a topic ready for scientific studies and engineering
advances.
- 合写作者：
- Jingda Tang, Jianyu Li, Joost J. Vlassak, Zhigang Suo
- 是否译文：
- 否
- 发表时间：
- 2017-10-03