Fatigue fracture of tough hydrogels

DSpace/Manakin Repository

Fatigue fracture of tough hydrogels

Citable link to this page

 

 
Title: Fatigue fracture of tough hydrogels
Author: Bai, Ruobing; Yang, Quansan; Tang, Jingda; Morelle, Xavier P.; Vlassak, Joost J.; Suo, Zhigang

Note: Order does not necessarily reflect citation order of authors.

Citation: Bai, Ruobing, Quansan Yang, Jingda Tang, Xavier P. Morelle, Joost Vlassak, and Zhigang Suo. 2017. “Fatigue Fracture of Tough Hydrogels.” Extreme Mechanics Letters 15 (September): 91–96. doi:10.1016/j.eml.2017.07.002.
Full Text & Related Files:
Abstract: 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.
Published Version: 10.1016/j.eml.2017.07.002
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:34622827
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters