DEVELOPMENT OF COMPUTATIONAL EXPERIMENTAL METHODS TO OPTIMIZE THE MECHANICAL CHARACTERISTICS OF HIGH-ENERGY FILLED POLYMER SYSTEMS

2012 ◽  
Vol 3 (2) ◽  
pp. 135-148 ◽  
Author(s):  
I. I. Anisimov ◽  
E. A. Chashchikhin ◽  
V. I Desyatykh ◽  
S. P. Ogorodnikov ◽  
B. A. Lyukshin ◽  
...  
Keyword(s):  
Mechanical Characteristics ◽  
Experimental Methods ◽  
High Energy ◽  
Filled Polymer ◽  
Polymer Systems

scholarly journals Advanced Models for Modulus and Strength of Carbon-Nanotube-Filled Polymer Systems Assuming the Networks of Carbon Nanotubes and Interphase Section

Mathematics ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 990
Author(s):  
Yasser Zare ◽  
Kyongyop Rhee
Keyword(s):  
Carbon Nanotubes ◽  
Shear Strength ◽  
Carbon Nanotube ◽  
Interfacial Shear Strength ◽  
Tensile Modulus ◽  
Interfacial Shear ◽  
Filled Polymer ◽  
Polymer Systems

This study focuses on the simultaneous stiffening and percolating characteristics of the interphase section in polymer carbon nanotubes (CNTs) systems (PCNTs) using two advanced models of tensile modulus and strength. The interphase, as a third part around the nanoparticles, influences the mechanical features of such systems. The forecasts agree well with the tentative results, thus validating the advanced models. A CNT radius of >40 nm and CNT length of <5 μm marginally improve the modulus by 70%, while the highest modulus development of 350% is achieved with the thinnest nanoparticles. Furthermore, the highest improvement in nanocomposite’s strength (350%) is achieved with the CNT length of 12 μm and interfacial shear strength of 8 MPa. Generally, the highest ranges of the CNT length, interphase thickness, interphase modulus and interfacial shear strength lead to the most desirable mechanical features.

State-of-the-art Laser Ceramics for the Next-generation Solid-state Laser

2021 ◽  
Vol 30 (10) ◽  
pp. 22-27
Author(s):  
Ho Jin MA ◽  
Ha-Neul KIM
Keyword(s):  
Solid State ◽  
Mechanical Characteristics ◽  
High Energy ◽  
Solid State Lasers ◽  
Laser Ceramics ◽  
Host Materials ◽  
Laser Systems ◽  
Energy Laser ◽  
High Energy Laser ◽  
Gain Media

Solid-state lasers have aroused many researchers’ interests for a variety of applications in military and industrial fields. Because of the preference for increased output power, Nd:YAG single crystals, which are the most widely used gain media, should be replaced by other more suitable candidates. Polycrystalline sesquioxide ceramics show great potential for use as gain media because their thermal and mechanical characteristics are suitable for use with high-energy laser systems. Recently, novel concepts of the gain media were also introduced. Herein, while briefly looking back on the progress of polycrystalline laser ceramics, we will discuss new interests in host materials and systems.

scholarly journals Reducing of Energy Consumption by Improving the Reclaiming Technology in Autoclave of a Rubber Wastes

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1460 ◽  
Author(s):  
Dan Dobrotă ◽  
Gabriela Dobrotă
Keyword(s):  
Mechanical Properties ◽  
Energy Consumption ◽  
Mechanical Characteristics ◽  
Physical And Mechanical Properties ◽  
High Energy ◽  
Refining Process ◽  
It Use ◽  
Rubber Waste ◽  
New Type ◽  
High Energy Consumption

The devulcanization of the rubber wastes in autoclave represent a technological variant that allows the superior utilization of rubber wastes, but with high energy consumption. The researches aimed at improving the devulcanization technology in order to obtain reclaimed rubber with superior characteristics, but also with a reduction in energy consumption. An improvement to devulcanization technology consisted in vacuuming the autoclave at the end of the devulcanization process. An increase in the degree of devulcanization of the rubber from 86.83% to 93.81% and an improvement of the physico-mechanical characteristics of the reclaimed rubber was achieved by applying this technology. The realization of the new type of regenerated rubber allowed for an increase in the degree of it use for different mixtures, from 15–20 phr to 30–40 phr without substantially affecting the physical and mechanical properties of the products. Additionally, the researche has shown that, by obtaining the new type of reclaimed rubber, the duration of the refining process has been reduced by 30%. All of this leads to a considerable reduction in energy consumption and transformation of the rubber waste reclaiming process into a sustainable one.

Physical Performance of Polymer Systems Containing Micro and Nano Fillers

1998 ◽  
Vol 519 ◽  
Author(s):  
Z. Justin Gao ◽  
Andy H. Tsou ◽  
B. Claflin ◽  
G. Lucovsky
Keyword(s):  
Physical Performance ◽  
Continuum Mechanics ◽  
General Framework ◽  
Elastic Moduli ◽  
Synergistic Effects ◽  
Experimental Measurements ◽  
Filled Polymer ◽  
Polymer Systems ◽  
Matrix Properties ◽  
Inorganic Fillers

AbstractThis paper deals with polymer systems containing micro and nano organic/inorganic fillers. A general framework is established to study the effects of the filler and matrix properties on the physical performance of filled polymer systems. A model is proposed to predict elastic moduli, break strength and break strain of polymers containing fillers. The model, based on rigorous continuum mechanics principles, takes into consideration the filler/filler interactions, incorporates the nonlinear synergistic effects of fillers, and agrees very well with experimental measurements.

Jamming in Filled Polymer Systems

2010 ◽  
Vol 291-292 (1) ◽  
pp. 193-201 ◽  
Author(s):  
Sven Richter ◽  
Marina Saphiannikova ◽  
Klaus Werner Stöckelhuber ◽  
Gert Heinrich
Keyword(s):  
Filled Polymer ◽  
Polymer Systems

Mechanical Characteristic of Flowing Solidification under the Extrusion for the Mixture of the Liquid Aluminum with Sillimanite Particles

2005 ◽  
Vol 475-479 ◽  
pp. 329-332
Author(s):  
Wei Chen ◽  
Chang Qing Sun ◽  
Yun Liang Li
Keyword(s):  
Plastic Deformation ◽  
Liquid Metal ◽  
Theoretical Analysis ◽  
Mechanical Characteristics ◽  
Liquid Aluminum ◽  
Metallic Matrix ◽  
Experimental Methods ◽  
Extrusion Process ◽  
Metallic Matrix Composite ◽  
Metal Extrusion

: According to the theory of liquid metal forging and liquid metal extrusion, a new kind of fabricating method for particles reinforced metallic matrix composite was put forward by author. In this paper, the extrusion process to semisolid thick liquid after the mixture was studied by means of the theoretical analysis and experimental methods. Mechanical characteristics of solidification during flowing and plastic deformation during solidification of the composite were found. So the base was built up for selecting technology parameters and for building a stabile process

Effect of Variation of Injection Moulding Parameters on Static and Dynamic Material Characteristics of Filled Polymer Materials

2018 ◽  
Vol 1147 ◽  
pp. 42-47
Author(s):  
Vaclav Contos
Keyword(s):  
Mechanical Properties ◽  
Structural Analysis ◽  
Injection Moulding ◽  
Mechanical Characteristics ◽  
Discrete Element ◽  
Polymer Materials ◽  
Filled Polymer ◽  
Material Characteristics ◽  
The Continuum

A Continuum (filled polymer) is inhomogeneous and anisotropic. The Continuum is used in an injection moulding simulation at first (generally unnewton type of fluid). Then the continuum is solid (after cooling) and it is possible to carry out ordinary structural analysis with it both static and dynamic. The solid continuum has different mechanical properties for each of discrete element. The consequent values of mechanical characteristics (after simulation of load) will generally have different values when influence of injection moulding is taken into account for analyses.

Correlation of the properties of filled polymer systems with the structural characteristics of the filler

1987 ◽  
Vol 23 (3) ◽  
pp. 381-384
Author(s):  
M. N. Barskaya ◽  
S. G. Krasnich ◽  
G. N. Pshenichnaya ◽  
L. S. Slobodkin ◽  
A. I. Meleshko ◽  
...  
Keyword(s):  
Structural Characteristics ◽  
Filled Polymer ◽  
Polymer Systems

The Calculation of Elastic Modulus Behind Strong Shock Waves

2009 ◽  
Vol 4 (4) ◽  
pp. 79-90
Author(s):  
Evgeny Kraus
Keyword(s):  
Shock Waves ◽  
Mechanical Characteristics ◽  
Strong Shock ◽  
High Energy ◽  
High Energy Density ◽  
Uniform System ◽  
Comprehensive Comparison ◽  
State 1 ◽  
Strong Shock Waves ◽  
Good Agreement

In the paper the approach for calculation of mechanical characteristics of materials behind strong shock waves is realized in the frame of uniform system of the few-parametric equation of state [1]. For the considered materials a comprehensive comparison of theoretical computational results with available at high energy density experimental data is carried out and good agreement of the results is obtained

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