Search results

The specific test is as follows. 1 Experimental Part 1.1 Experimental Methods In this study, orthogonal experiment was used, considering several factors for the regeneration of waste EPDM at the same time and selecting different levels for different factors.
Five experimental factors were selected: solve dosage, the amount of stearic acid, sulfur amount, mixing time and curing temperature.
So we can see from table 1, the data in the table is all meet the requirements. 2.2 Analysis of physical and mechanical properties 2.2.1 Solve agent’s affection on reclaimed rubber Solve agent copies has great affection on the tensile strength and 100% elongation of rubber.
With solve agent’s adding’s increasing, the physical properties of reclaimed rubber is also increasing, and when the adding is two copies (the amount of powder is 100 copies), the physical properties has the highest value.
However, due to the uneven mixing and incomplete vulcanization in the process of rubber, so adding a certain amount of sulfur can improve the physical and mechanical properties of rubber.

Two main factors affect mechanical properties of eutectic Al–Si cast alloys: (i) their microstructure since it is strongly correlated to most of the alloys properties and (ii) the chemical composition since it determines microstructural features, such as the morphology of dendritic α-Al, as well as the one of other intermetallics which are present in the microstructure [2].
Thus, some mechanical properties are already present in these alloys at the as-cast state whereas, some others, are obtained after their heat treatments.
As mentioned above these Iron compounds are detrimental to the mechanical properties.
Mechanical Properties 4- An improvement of the microhardness was observed after the aging treatment, for the two groups of alloys.
[5] Yongjin Wang, Hengcheng Liao, Yuna Wu and Jian Yang, Effect of Si content on microstructure and mechanical properties of Al–Si–Mg alloys, Materials and Design, 53, (2014) 634–638

The results show that the major factor affecting reduction of IFT is surfactant concentration accounting for 98.1%.
As a result, it can change the interfacial properties of the fluid-fluid interface.
This equipment connects to camera and computer to measure the change of properties.
Therefore, IFT is not affected by the change of pressure.
The main factors for IFT reduction are surfactant concentration and salinity accounting for 98.1% and 86.3%, respectively.

Morphology of graphite affects the mechanical and physical properties of cast irons.
The morphology of graphite is generally quantified by the percent nodularity and/or graphite shape factors (e.g. roundness, sphericity, compactness, aspect ratio).
However, the nodularity is also affected by the cooling rate and the sulfur level.

Several factors contribute to the effectiveness of ultrasonic welding in ABS: · Acoustic Properties: ABS carries ultrasonic waves well, concentrating the energy at the weld contact to generate the heat required to melt the material [7]
Physical and Mechanical Properties Tensile strength: Approximately 70 MPa for pure Onyx and can exceed 700 MPa when continuous carbon fiber reinforcement is added.
Factors Affecting Ultrasonic Welding of Onyx Important variables need to be well managed for Onyx ultrasonic welding to be successful: Amplitude: Greater amplitudes require more energy to melt, but too much energy can break down the nylon matrix [12].
Suboptimal or unsuccessful welding could result from slight variations in these factors [16]
“Thermal and mechanical properties of polyamide composites reinforced with short carbon fibers.

Heat-aging effects on the material properties and fatigue life prediction of natural rubber were experimentally investigated.
This aging process results mainly from heat due to hysteric loss, and is affects not only the material property but also the fatigue life of rubber.
Elongation at break(EB) is very important factor in material properties and fatigue life prediction of rubber components.
We know that the material properties were a function of heat-aged period as well as temperatures.
Predicted fatigue lives of the rubber component were in fairly good agreements with the experimental lives within factors of two.

In the case of mechanical machining processing or cutting, the most important factor in the characterization of the surface quality is the roughness.
For this type of steel, according to the standard are guaranteed, the chemical composition on liquid steel, tensile properties, the angle of bending to cold and breaking KV energy at a temperature of +20°C.
The factors influencing the surface roughness obtained by laser cutting are presented in Table 2.
The factors of influence on surface roughness of studied parts Factors of influence Response functions Coding Parameter Simbol Unit of measure Adjustment range Roughness parameters x1 Cutting speed V [mm/min] 500…2000 Ra, Rq, [mm] x2 Frequency υ [Hz] 40…500 Ra, Rq, [mm] x3 Material thickness G [mm] 3…8 Ra, Rq, [mm] x4 Power P [W] 800…2000 Ra, Rq, [mm] x5 Energy conversion efficiency η % 30…90 Ra, Rq, [mm] After the complete inventory of the factors and their influence, the significance of existing factors was assessed and then the evaluation of the relevance of existing factors, followed by their ranking, in descending order of the influence exerted on the response functions and to the exclusion within the experiment of factors with insignificant influence.
These factors were chosen because power and energy conversion efficiency are dependent on other factors.

Introduction Micro-mechanical characteristics are one of the most significant contents in mechanical characteristics of coarse grained material.
Sensitivity Analyses of Micro Parameters There are several factors influencing the strength and deformation of coarse grained material, and based on the relationship between these influence factors and shearing strength, the formula can be made as follows: （1） Where is void ratio, is the component of material which includes the particle gradation or material-rock ratio, is the temperature, are shear strain and strain rate, respectively, are the bond strength and friction angle, respectively.
Besides, the friction coefficient has effect on the thickness of shear plane, but it will not affect the spatial distributrion of the shear plane.
Some conclusions could be made as follows: (1) Based on the stress-strain curves obtained by a serial of numerical tests under different micro parameters, the factors of influence on residual strength and peak strength have been analyzed that the influence of the ratio of normal and shear stiffness on peak strength and residual strength is the largest.
Influence on deformation properties of coarse sand of discrete element micro parameters.

Furthermore, the finite element analysis was used in determining the stress intensity factors of CTS specimen.
However, the fatigue crack growth behavior under the mixed mode state is affected by KI, KII and various other factors.
Using the finite element method, the stress intensity factors for mode I and mode II of the CTS specimen were determined.
Tables 1 and 2 summarize its chemical composition and mechanical properties, respectively.
The elastic properties of the material are shown in Table 2.

The thermo-mechanical properties of granular materials with macroscopic particle sizes (above 1 mm) have been investigated experimentally and theoretically, but knowledge remains limited for materials consisting of micro/nano-sized grains.
Heat transport in these energy systems is a key issue necessitating extensive research to 1) establish a fundamental understanding of the thermo-mechanical properties and 2) provide useful knowledge for process optimisation [1-3].
Due to heterogeneous material properties, complex packing structures and various inter-particle interactions, different theoretical methods have been developed to study the heat transport mechanisms and the influencing external factors [4, 5].
To realize a useful type-III model, a proper description of the unit cell combing different heat transfer mechanism and external factors is required.
Due to the consistent material properties of the two contact hemispheres, the nano contact region is considered to have the same thermal properties as the bulk material.