Thermo-Electro-Mechanical Properties of Interpenetrating Phase Composites with Periodic Architectured Reinforcements

Author(s):  
Rashid K. Abu Al-Rub ◽  
Diab W. Abueidda ◽  
Ahmed S. Dalaq
2013 ◽  
Vol 365-366 ◽  
pp. 1058-1061
Author(s):  
Yong Sen Wei ◽  
Ping Huang ◽  
Ri Fei Yang ◽  
Sen Kai Lu

Interpenetrating phase composites (IPCs) are becoming an important class of materials as the result of the development of a number of new techniques for producing composites with interpenetrating microstructures. In this paper, the mechanical properties of a B4C-ZrB2/Al IPCs have been studied using the Solidwork simulation code applied the finite element method (FEM). The results have shown that the B4C-ZrB2ceramic matrix and Al network exhibit different mechanical behaviour. The ultimate stress is found near the interface of the composites. Simulated data shows ultimate tensile strengths of up to 453 MPa at a failure strain of up to 0.5%. The compression strength was up to 615 MPa with 0.41% compressive strain to failure. The composites show an excellent resistance to high cycle fatigue. Fatigue life for specimen was 5.1×104cycles for 210 MPa while R =-1.0, and 5.6×104cycles for 133 MPa while R=-0.05. Infiltrated Al addition was the leading reason for the fracture toughness improvement of the composites. The simulated results are consistent with the experimental results well.


2020 ◽  
Vol 39 (14) ◽  
pp. 1635-1646 ◽  
Author(s):  
Irfan Hussain ◽  
Oraib Al-Ketan ◽  
Federico Renda ◽  
Monica Malvezzi ◽  
Domenico Prattichizzo ◽  
...  

Advances in soft robotics and material science have enabled rapid progress in soft grippers. The ability to 3D print materials with softer, more elastic materials properties is a recent development and a key enabling technology for the rapid development of soft robots. However, obtaining the desired mechanical properties (e.g., stiffness) of the soft joints and information about the parameters to select in 3D printers is often not straightforward. In this article, we propose the use of interpenetrating phase composites (IPCs) materials with mathematically generated topologies based on triply periodic minimal surfaces for the development of soft grippers with desired mechanical properties. The flexible joints of the gripper can be realized through two or more phases that are topologically interconnected such that each phase represents a standalone cellular structure. As a case study, we present the design and development of a two-finger soft gripper as an example to demonstrate the application scenario of our approach. The flexible parts with desired stiffness values are realized by using IPCs materials in which the reinforcement distribution can be regulated on the basis of mathematical models. We characterized the properties of the material through a set of quantitative experiments on IPCs material specimens, and then we realized qualitative grasping tests with the gripper and a set of objects with different shapes and sizes. We showed that by properly regulating the properties of IPCs material it is possible to design modular grippers with the same structure, but different closure motions. Grippers can be customized for different tasks by easily assembling and disassembling fingers.


2017 ◽  
Vol 176 ◽  
pp. 9-19 ◽  
Author(s):  
Oraib Al-Ketan ◽  
Mhd Adel Assad ◽  
Rashid K. Abu Al-Rub

2013 ◽  
Vol 834-836 ◽  
pp. 285-289
Author(s):  
Chun Guang Long ◽  
Yang Su ◽  
Chao Shen

A new type of interpenetrating phase composites (IPC) was prepared by impregnating open-cell aluminum foam (AF) with polyoxymethylene (POM) through an injection molding process, and their mechanical properties has been investigated. It shows relatively high bending strength and impact strength with compared to the pure AF and POM. With the addition of 10wt% polytetrafluoroethylene (PTFE) to POM, the mechanical properties of the IPC are further improved . On the other hand, Tribological tests of IPC were carried out with a pin-disk machine, and their worn surfaces were characterized by scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) to explore the wear mechanism. Results show that the friction coefficient of AF/POM/PTFE IPC is about 12.7% lower than that of AF/POM IPC and the wear loss reduced by 33.3%. The reason of the increase in the wear resistance can be explained by the transfer film which delays the wear process.


2018 ◽  
Vol 44 (17) ◽  
pp. 21742-21749 ◽  
Author(s):  
Yong Zheng ◽  
Yang Zhou ◽  
Yide Feng ◽  
Xinyu Teng ◽  
Shitao Yan ◽  
...  

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