Search results

Glass mirrors are normally fabricated by mechanical processing involving grinding, lapping and polishing.
The influencing factors on the removal function include the properties of the work material, input RF power, working distance of the plasma jet from the machining surface, flow rate of the SF6, and the ratio of O2 to SF6.
In the experiment the values for factors listed in Table 1 were varied individually.
This explains why the RF power affects the removal function profile so greatly.
The waviness which exists in the fused quartz surface is the roughness called the ripple which is characteristic in the mechanical polished surface.

Experimental Work The mechanical properties and chloride penetration depth of DSCC were studied.
Material Properties.
Meda, Relationships between Fibre Distribution, Workability and the Mechanical Properties of SFRC Applied to Precast Roof Elements.
Zerbino, Physical-mechanical Properties and Mesostructure of Plain and Fiber Reinforced Self-Compacting Concrete.
Sirivivatnanon, Effect of Different Supplementary Cementitious Materials on Mechanical Properties of High Performance Concrete.

In order to visually grade the timbers, the strength affecting features on each wooden member were surveyed according to the UNI standards 11035:2003 part 1 and 11119:2004.
Two dimensional stress waves contour maps in cross-section planes and, especially, in longitudinal planes permitted to have information on macroscopic strength affecting material features, such as big knots or knots clusters.
Since the beam in service has been refurbished (it showed good mechanical conditions), for laboratory testing we have been obliged to choose among the discarded beams, which have different geometrical and mechanical properties.
In detail, a preliminary throughout diagnostic campaign allows reducing the uncertainty pertaining material properties and conditions.
Determination of some physical and mechanical properties.

The processes which include injection debinding and sintering were studied as well as the properties.
Experiment Process Properties of Powders.
The uniformity of feedstock directly affects subsequent processing steps as well as properties of materials.
Although performance of products are related to many factors, in many cases, the sintering process has great impact on the final products of microstructure and properties, even decisive influence.
So the sintering atmosphere affects the process of sintering densification and the final mechanical properties.

The mechanical breakdown of polymer may be related to a number of factors, such as polymer structure, molecular weight of polymer, mechanical force and temperature.
Hardness may have a significant effect upon other phsical properties.
Its aged state depends on the polymer internal factors, such as the chemical composition, molecular structure, physical state ; and the external factors such as light, heat, electricity, mechanical stress, oxygen, ozone and chemical media.
Some factors other than chemical factors such as oxygen in the air that reacts with the polymer, and caused the breakdown, crosslink and other reactions.
The blend was appropriate so that it presented good properties.

Graphene infusion enhances conductivity and mechanical properties, altering microstructure and inducing twin boundaries in copper grains.
Table 1 displays the electrical and mechanical properties of Cu, GrCu, AgCu wire.
Relatively, GrCu wire established extraordinary performances in mechanical properties, attributing from the formation of twin structure.
This grain refining improves the mechanical properties, however, reduces the electrical properties due to hindering of electron trespass.
Both factors collectively impacts wire durability and the resistant to deformation and stress, augmenting the mechanical strength of copper wire as illustrated in Fig. 4(b).

Relative researches made great advances[7-9], but most researches have been focused on the interface, microstructure and mechanical properties of C/C composites, and few effort has been made to research the whole orientation of C/C composites.
After the unidirectional C/C composite was finished preparing through hot pressure molding process, the influence factors including pressure and testing direction were investigated.
The microstructure parameters of unidirectional C/C composites were analyzed by XRD in order to discuss the orientation and influence factors of unidirectional composites. 1.
Lower pressure would produce carbon foams, affect the combination of carbon fiber and matrix even couldn't form a bulk, or reduce the density of material, and it influences other properties.
Therefore, if other properties not only the orientation were investigated, more comprehensive factors shoule be considered.

The engineering ceramics has some properties such as high brittleness, low fracture toughness, elastic limit very close to strength.
The grinding speed affects less the changed range of surface roughness
While the feed speed is higher, it affects the surface roughness severely.
But the lower feed speed affects less
(2) According to the analysis, determine the precedence order of various factors of the rotary ultrasonic grinding engineering ceramic ZrO2 as follows: abrasive particle size, wheel depth of cut, feed speed, grinding wheel speed.

Free form model and conical die model were carried out to study the effect of collision behavior on mechanical properties of Al alloy sheet.
However, the collision between sheet metal and die is an important factor in EMF which affect the forming quality of parts, and the effect of collision behavior on mechanical properties has not been widely studied.
It proves that under the same deformation degree, the collision behavior of the sheet and die can reduce the void volume fraction and improve the mechanical properties of the sheet.
In order to ensure the forming precision and the mechanical properties, the optimum discharge voltage parameter is 6.1kV.
And proper increase of discharge voltage has benefit to improve the mechanical properties of the parts.

The matters of confined element is the formation of tri-axial state of stress, which causes an improvement in physical-mechanical properties of strengthened material.
Factors influencing the efficiency of this method of strengthening – FRP confining.
From the above mentioned, it is obvious that the efficiency of strengthening by confinement is determined by the properties and behavior of strengthening material (mechanical properties, number and orientation of fabric layers, the dislocation (placement) of strengthening elements along the height, etc.) as well as by the geometrical parameters of strengthened element (cross-sectional shape, surface characteristics, slenderness ratio, etc.).
(It should not to be set properties of dry fibers of fabric, which achieve significantly higher values.
For the purposes of the experimental verification, it was necessary to determine these properties precisely.