Fatigue fracture of tough 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 tough hydrogels
- 发表刊物：
- Extreme Mechanics Letters
- 摘要：
- Tough hydrogels of many chemical compositions have been developed in recent years, but their fatigue
fracture has not been studied. The lack of study hinders further development of hydrogels for applications
that require long lifetimes under cyclic loads. Examples include tissue engineering, soft robots, and
stretchable electronics. Here we study the fatigue fracture of a polyacrylamide–alginate tough hydrogel.
We find that the stress–stretch curve changes cycle by cycle, and reaches a steady state after thousands of
cycles. The threshold for fatigue fracture is about 53 J/m2, much below the fracture energy (∼10,000 J/m2)
measured under monotonic load. Nonetheless, the extension of crack per cycle in the polyacrylamide–
alginate tough hydrogel is much smaller than that in a single-network polyacrylamide hydrogel.
- 合写作者：
- Bai, RB; Yang, QS; Tang, JD; Morelle, XP; Vlassak, J; Suo, ZG
- 是否译文：
- 否
- 发表时间：
- 2017-07-15