The energy dissipation and Mullins effect of tough polymer/graphene oxide hybrid nanocomposite hydrogels

2017 ◽  
Vol 8 (32) ◽  
pp. 4659-4672 ◽  
Author(s):  
Ziqing Tang ◽  
Feng Chen ◽  
Qiang Chen ◽  
Lin Zhu ◽  
Xiaoqiang Yan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Dissipation ◽  
High Strength ◽  
Mullins Effect ◽  
Hybrid Nanocomposite ◽  
Nanocomposite Hydrogels ◽  
High Toughness

Polyacrylamide/graphene oxide hybrid NC gels exhibited high strength, high toughness and rapid self-recovery properties.

Pseudoelasticity and Nonideal Mullins Effect of Nanocomposite Hydrogels

2016 ◽  
Vol 83 (11) ◽  
Author(s):  
Jingda Tang ◽  
Xing Chen ◽  
Yongmao Pei ◽  
Daining Fang
Keyword(s):  
Polymer Network ◽  
Residual Deformation ◽  
Polymer Chains ◽  
Residual Fraction ◽  
Mullins Effect ◽  
Nanocomposite Hydrogels ◽  
High Toughness ◽  
Physically Crosslinked ◽  
Two Parameters ◽  
The Ideal

The polymer network of a nanocomposite (NC) hydrogel is physically crosslinked by nanoclay. Recently reported high toughness of nanocomposite (NC) hydrogels highlights the importance of their dissipative properties. The desorption of polymer chains from clay surface may contribute mostly to the hysteresis of NC hydrogels. Here, we proposed a mechanistically motivated pseudoelastic model capable of characterizing the hysteresis of NC hydrogels. The two parameters in the proposed damage variable can be determined by the experiments. We applied the model to the uniaxial tension and reproduced the ideal Mullins effect of NC hydrogels. Furthermore, we considered two nonideal effects: residual deformation and nonideal reloading in multicycle test, using newly proposed damage parameters. A power law with the order of 1/3 is established between the residual fraction of the stretch and the re-adsorption ratio of polymer chains. Finally, we demonstrated the dissipative properties of various NC hydrogels with the model.

Hybrid nanocomposite hydrogels with high strength and excellent self-recovery performance

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59131-59140 ◽  
Author(s):  
Jia Yang ◽  
Lin Zhu ◽  
Xiaoqiang Yan ◽  
Dandan Wei ◽  
Gang Qin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Hybrid Nanocomposite ◽  
Nanocomposite Hydrogels ◽  
Large Hysteresis ◽  
Recovery Performance ◽  
Physical And Chemical

Hybrid nanocomposite hydrogels (NC gels) with physical and chemical crosslinkings exhibit improved mechanical properties and large hysteresis. Moreover, hybrid NC gels also demonstrate excellent self-recovery properties.

Bio-inspired layered chitosan/graphene oxide nanocomposite hydrogels with high strength and pH-driven shape memory effect

2017 ◽  
Vol 177 ◽  
pp. 116-125 ◽  
Author(s):  
Yaqian Zhang ◽  
Min Zhang ◽  
Haoyang Jiang ◽  
Jinli Shi ◽  
Feibo Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Strength ◽  
Nanocomposite Hydrogels

DILLIMAX 500

Alloy Digest ◽  
2012 ◽  
Vol 61 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Yield Strength ◽  
Physical Properties ◽  
Structural Steel ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Fine Grained ◽  
High Toughness ◽  
Minimum Yield

Abstract Dillimax 500 is a high-strength quenched and tempered, fine-grained structural steel with a minimum yield strength of 500 MPa (72 ksi). Plate is delivered in three qualities: basic, high toughness, and extra tough. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness. It also includes information on surface qualities as well as forming, heat treating, and joining. Filing Code: SA-645. Producer or source: Dillinger Hütte GTS.

SPARTAN II

Alloy Digest ◽  
2016 ◽  
Vol 65 (1) ◽  
Keyword(s):  
Yield Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Low Carbon ◽  
Copper Precipitation ◽  
High Toughness ◽  
The Family ◽  
Alloy Steels ◽  
Minimum Yield

Abstract SPARTAN II (HSLA-100) is one of the family of Spartan high strength (>690 MPa, or >100 ksi, minimum yield strength), high toughness, improved weldability steels, which are alternatives to traditional quenched and tempered alloy steels. The Spartan family of steels are low carbon, copper precipitation hardened steels. Spartan II has improved yield strength compared to Spartan I. This datasheet provides information on composition, physical properties, microstructure, tensile properties. It also includes information on forming and joining. Filing Code: SA-738. Producer or source: ArcelorMittal USA.

TLS S1

Alloy Digest ◽  
2007 ◽  
Vol 56 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
Carbon Content ◽  
High Strength ◽  
Heat Treating ◽  
High Toughness

Abstract The carbon content in TLS S1, about 0.5%, produces a combination of high strength and high toughness with medium wear resistance. Chisels and rivet sets are typical applications. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-655. Producer or source: Timken Latrobe Steel.

High Toughness Inorganic Solid Electrolytes via the Use of Reduced Graphene-Oxide

2020 ◽  
Author(s):  
Christos E. Athanasiou ◽  
Mok Yun Jin ◽  
Cristina Ramirez ◽  
Nitin P. Padture ◽  
Brian W. Sheldon
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solid Electrolytes ◽  
High Toughness ◽  
Reduced Graphene

Numerical and analytical study on the mechanical properties of a connector with long-fiber and metal laminated bolts for prefabricated construction

2021 ◽  
pp. 136943322110073
Author(s):  
Xiaoming Zhang ◽  
Danni Ren ◽  
Xin Liu ◽  
Sujun Guan ◽  
Xindi Yu ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Analytical Study ◽  
High Strength ◽  
Bilinear Model ◽  
Fiber Layer ◽  
Rotational Displacement ◽  
Length Direction ◽  
Plastic Phase ◽  
Fiber Metal ◽  
Mechanical Performances

To improve the mechanical performances of joints in prefabricated construction, a type of connection structure with long-fiber and metal laminated bolts (referred to as a fiber-metal connector) is proposed and investigated by simulation and theoretical methods. The results include the following: (1) The fiber layer in bolts can form a second stiffness during rotation. This mechanical characteristic improves the bearing capacities and energy dissipation ability of the connector relative to the conventional metal connector, which are expected to effectively limit the elastoplastic rotational displacement of a structure. (2) For the reason, the fiber layer can bear load in the plastic phase due to its high-strength characteristic in the length direction. (3) A bilinear model for the bearing curve of the fiber-metal connector is proposed, and equations for optimization of fiber layer thickness are obtained with a target on bearing capacity and energy dissipation ability which are approximately higher 30% and 13% than that of the conventional metal connector, respectively. This research is expected to provide a theoretical basis for the application of this fiber-metal connector in engineering and improve the safety of prefabricated structures.

A Molecular‐Level Interface Design Enabled High‐Strength and High‐Toughness Carbon Nanotube Buckypaper

2021 ◽  
pp. 2100244
Author(s):  
Lulu Shen ◽  
Yushun Zhao ◽  
Peter Samora Owuor ◽  
Chao Wang ◽  
Chao Sui ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Interface Design ◽  
Molecular Level ◽  
High Strength ◽  
High Toughness
Sign in / Sign up

Export Citation Format

Share Document