The emerging applications of hydrogels in devices and machines require these soft materials to maintain robustness under cyclic mechanical loads. Whereas hydrogels have been made tough to resist fracture under a single cycle of mechanical load, these toughened gels still suffer from fatigue fracture unde...
Design principle for anti-fatigue-fracture hydrogels. (A) Illustration of fatigue crack propagation in an amorphous hydrogel and in hydrogels with low and high crystallinities under cyclic loads. The yellow areas represent crystalline domains, and the blue areas denote amorphous domains. In the amorph...
Hydrogel-based devices are widely used as flexible electronics, biosensors, soft robots, and intelligent human-machine interfaces. In these applications, high stretchability, low hysteresis, and anti-fatigue fracture are essential but can be rarely met i
properties of the PHEA hydrogels soaked in 50 wt% KAc were measured under subzero temperatures. The stress and strain were reduced as the temperature dropped from 20 °C to −60 °C. However, the hydrogel still exhibited adequate stress (235.7 kPa) and strain (460%) at −60 ...
Additionally, the hydrogen bonds formed between glycerol molecules and the hydroxyl groups of PVA molecules enhance the mechanical properties of the gel, resulting in a wide range of desirable characteristics such as high toughness and fatigue fracture resistance. Moreover, the conductive hydrogel ...
The application of hydrogels for flexible sensor is gravely hampered due to their poor freezing resistance and fatigue fracture associated with durable deformation, hence hydrogels that can operate correctly at sub-zero temperatures and sustain long-term deformation are urged for wearable electronics and...
Impressive fatigue life and fracture toughness.pdf Macromolecules (2012), pp. 238-245 Google Scholar [113] Y. Guo, C. Bao, L. Song, B. Yuan, Y. Hu In situ polymerization of graphene, graphite oxide, and functionalized graphite oxide into epoxy resin and comparison study of on-the-flame...
hydraulic fracture or (b) on two closely-located bedding planes at the top and the bottom of the vertical hydraulic fracture, as observed via a clear depth separation for a stage at the Barnett shale53,54. These induced shear events are limited to the vicinity of the hydraulic fracture ...
Analytical and experimental investigation of fatigue and fracture behaviors for anti-double dog-bone riveted joints. Liu Y S,He X D,Shao X J,et al. Engineering Failure Analysis . 2010Liu Y S,He X D,Shao X J,et al.Analytical and experimental investigation of fatigue and fracture behaviors ...
CYCLIC fatigueThis study investigated the effects of antirotational titanium bases on the mechanical behavior of CAD/CAM titanium bases used for implant-supported prostheses. The aim was to assess the impact on the marginal fit, fatigue behavior, stress concentration, and fracture load of imp...