scholarly journals The Lightweight Composite Structure and Mechanical Properties of the Beetle Forewing

10.5772/48807 ◽  
2012 ◽  
Author(s):  
Jinxiang Chen ◽  
Qing-Qing Ni ◽  
Juan Xie
Keyword(s):  
Mechanical Properties ◽  
Composite Structure

scholarly journals Effect of Temperature on the Mechanical Properties and Deformation Mechanism of a High Mn Steel With Composite Structure

2020 ◽  
Vol 7 ◽  
Author(s):  
Xiaoman Chen ◽  
Yuhui Wang ◽  
Jianchao Xiong ◽  
Guoyang Li ◽  
Yanzhong Tian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Deformation Mechanism ◽  
Composite Structure ◽  
Effect Of Temperature ◽  
Mn Steel

Mechanical and Structural Properties of Maltodextrin/Agarose Gel Composites

2006 ◽  
Vol 16 (5) ◽  
pp. 248-257 ◽  
Author(s):  
Chrystel Loret ◽  
William J. Frith ◽  
Peter J. Fryer
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Confocal Microscopy ◽  
Large Deformation ◽  
Mechanical Behaviour ◽  
Composite Structure ◽  
Volume Fraction ◽  
Dispersed Phase ◽  
Agarose Gel ◽  
Mechanical And Structural Properties

Abstract When two biopolymers are mixed together, they will normally phase separate to give two distinct phases. If the biopolymers are gelled during this phase separation, for instance by reducing the temperature, one phase is trapped in this other one and an emulsion-like composite structure is obtained. In this study, we investigated the effect of volume fraction and droplet size of this dispersed phase on the mechanical properties of maltodextrin/agarose gel composites, where agarose is the dispersed phase. Mechanical properties of the different composites were investigated under large deformation using a rheometer with a vane geometry. These composites were also observed by confocal microscopy, allowing conclusions to be drawn regarding the microstructural origins of the observed mechanical behaviour.

scholarly journals Effects of Different Interface Forms on Mechanical Properties of Steel Self-Compacting Concrete Composite Beams

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Chengzhi Wang ◽  
Xin Liu ◽  
Wei Liu ◽  
Zhiming Li
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Bearing Capacity ◽  
Composite Structure ◽  
Mechanical Performance ◽  
Complex Structure ◽  
Self Compacting Concrete ◽  
Element Analysis ◽  
Shear Connectors ◽  
Fea Model

In the water resources allocation project in Pearl River Delta, in order to optimize the structural design, the deep buried tunnel adopts the composite lining structure. However, the weakest link in a complex structure is the connection between two different interfaces. This paper reports the findings of an experimental study that was undertaken to investigate the interface mechanical performance of steel self-compacting concrete composite structure subjected to cyclic loads. In this study, different shear connectors are considered, and six different specimens were designed and tested, respectively. The test is used to research the effect of the different shear connectors on the bearing capacity and interface mechanical properties of composite structure in an experimental study. According to these test results, a detailed analysis was carried out on the relationships, such as the stress-strain and load-displacement relationships for the specimen. These tests show that the shear connectors will significantly enhance the bearing capacity and interface mechanical properties of the composite structure. Among them, the comprehensive performance of the specimens using the stud-longitudinal ribs shear connectors is the best. Additionally, a finite element analysis (FEA) model was developed. The comparison of the simulation results with the experimental results shows that this FEA is applicable for this type of experiment.

Nano-SiC Particles Reinforced Plasma Sprayed WC-Co Coating by Laser Melting Process

2006 ◽  
Vol 315-316 ◽  
pp. 575-578
Author(s):  
J.F. Zhao ◽  
Yong Li ◽  
L. Wang
Keyword(s):  
Mechanical Properties ◽  
Composite Structure ◽  
Melting Process ◽  
Nanocomposite Coating ◽  
Nano Particles ◽  
Laser Melting ◽  
Corrosion Resistant ◽  
Sic Particles ◽  
Fine Microstructure ◽  
Plasma Sprayed

The laser-melting process of SiC nano-particles coated on the plasma sprayed WC-Co coating was performed. The SiC nanocomposite coating was prepared, and the microstructure and the mechanical properties of it were investigated. After laser irradiated, parts of nano SiC particles are turned into the inner of coating with the nano-micro composite structure. The being of SiC nano-particles in coating brings the better fine microstructure and the higher densification. The wear-resistant property and the corrosion-resistant property of the coating with SiC nano-particles are improved more than the coatings prepared by laser melting process without the SiC nano-particles.

scholarly journals A New Biomimetic Composite Structure with Tunable Stiffness and Superior Toughness via Designed Structure Breakage

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 636
Author(s):  
Xiaohan Wang ◽  
Dongxu Li
Keyword(s):  
Mechanical Properties ◽  
Composite Structure ◽  
Composite Structures ◽  
Structure Design ◽  
Unit Cell ◽  
Geometrical Parameters ◽  
Representative Unit Cell ◽  
New Ideas ◽  
Traditional Structures ◽  
Tunable Stiffness

Mimicking natural structures has been highly pursued recently in composite structure design to break the bottlenecks in the mechanical properties of the traditional structures. Bone has a remarkable comprehensive performance of strength, stiffness and toughness, due to the intricate hierarchical microstructures and the sacrificial bonds within the organic components. Inspired by the strengthening and toughening mechanisms of cortical bone, a new biomimetic composite structure, with a designed progressive breakable internal construction mimicking the sacrificial bond, is proposed in this paper. Combining the bio-composite staggered plate structure with the sacrificial bond-mimicking construction, our new structure can realize tunable stiffness and superior toughness. We established the constitutive model of the representative unit cell of our new structure, and investigated its mechanical properties through theoretical analysis, as well as finite element modeling (FEM) and simulation. Two theoretical relations, respectively describing the elastic modulus decline ratio and the unit cell toughness promotion, are derived as functions of the geometrical parameters and the material parameters, and validated by simulation. We hope that this work can lay the foundation for the stiffness tunable and high toughness biomimetic composite structure design, and provide new ideas for the development of sacrificial bond-mimicking strategies in bio-inspired composite structures.

Crack Behaviour in Polymeric Composites: The Influence of Particle Shape

2011 ◽  
Vol 465 ◽  
pp. 564-567 ◽  
Author(s):  
Zdeněk Majer ◽  
Pavel Hutař ◽  
Zdeněk Knésl
Keyword(s):  
Mechanical Properties ◽  
Composite Structure ◽  
Point Of View ◽  
Particulate Composites ◽  
Theoretical Point ◽  
Global Behaviour ◽  
Rigid Particles ◽  
Three Phase ◽  
The Matrix ◽  
Mineral Fillers

In this paper polymeric particulate composites are studied (especially polypropylene (PP) matrix stuffed by rigid mineral fillers). Presently, polymeric particulate composites are frequently used in many engineering applications. The composite was modeled as a three-phase continuum – matrix, interphase and particle. The properties of the particles (size, shape) have a significant effect on the global behaviour of the composite. On the basis of fracture mechanics methodology the interaction of micro-crack propagation in the matrix filled by rigid particles covered by the interphase was analyzed. The effect of the composite structure on their mechanical properties is studied here from the theoretical point of view.

Influence of Composite Structure on Electrochemical and Mechanical Properties of Thick Ni-YSZ Anode

2019 ◽  
Vol 7 (1) ◽  
pp. 1555-1561 ◽  
Author(s):  
Kazuyoshi Sato ◽  
Go Okamoto ◽  
Hiroya Abe ◽  
Makio Naito
Keyword(s):  
Mechanical Properties ◽  
Composite Structure

scholarly journals The High Density Polyethylene Composite with Recycled Radiation Cross-Linked Filler of rHDPEx

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1361 ◽  
Author(s):  
David Manas ◽  
Miroslav Manas ◽  
Ales Mizera ◽  
Pavel Stoklasek ◽  
Jan Navratil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behaviour ◽  
Composite Structure ◽  
High Density Polyethylene ◽  
Industrial Waste ◽  
Room Temperature ◽  
High Density ◽  
Polyethylene Composite ◽  
Processing Properties ◽  
Better Than

This article discusses the possibilities of using radiation cross-linked high density polyethylene (HDPEx) acting as a filler in the original high density polyethylene (HDPE) matrix. The newly created composite is one of the possible answers to questions relating to the processing of radiation cross-linked thermoplastics. Radiation cross-linked networking is—nowadays, a commonly used technology that can significantly modify the properties of many types of thermoplastics. This paper describes the influence of the concentration of filler, in the form of grit or powder obtained by the grinding/milling of products/industrial waste from radiation cross-linked high density polyethylene (rHDPEx) on the mechanical and processing properties and the composite structure. It was determined that, by varying the concentration of the filler, it is possible to influence the mechanical behaviour of the composite. The mechanical properties of the new composite—measured at room temperature, are generally comparable or better than the same properties of the original thermoplastic. This creates very good assumptions for the effective and economically acceptable, processing of high density polyethylene (rHDPEx) waste. Its processability however, is limited; it can be processed by injection moulding up to 60 wt %.

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