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This paper studied the mechanical properties of concrete with cement partially replaced by recycled clay-brick-powder.
The analysis was to compare the significance level of different factors’ effect on concrete properties.
The sum of squares (SS), degree of freedom (DF), F value (F) and mean squared (MS) of different factors on concrete mechanical properties were summarized in Table 5.
(2) W/C is the most important factors affecting concrete mechanical properties.
“Mechanical properties of brick aggregate concrete .”

The strength, stiffness and stability of components are related with the mechanical properties of used materials, the mechanical properties are determined by the tests of materials.
Differences sample processing affect the accuracy of mechanical properties test results, in the mechanical properties test, even the same material, performance sample processing is different, it can cause test results are different.
This is because the test piece size is smaller, the probability of various defects in the test piece working parts is on the decline, and effect that external factors for the test piece are decreased, test piece has reflected the real characteristics of the materials.
For round test piece, with the decrease of working part diameter the index of mechanical properties increase, if diameter was smaller, it would more accurately reflect the real properties of materials; it is not obvious that the shoulder transition area r affect the mechanical properties of test material, but, elongation is lower when shoulder transition area r is less than 4 mm; with the increase of the performance sample surface roughness the index of mechanical properties decrease.
For flat test piece, with the increase of the working part width the elongation increased slightly, and it is not obvious that it affect the index of other mechanical properties.

Based on the comprehensive analysis of the microstructure, microhardness and mechanical properties, the effect of Cu content on the welding microstructure and mechanical properties of the alloy is clarified.
The mechanical properties were tested at room temperature by the AG-XPlu-100KN tensile testing machine.
Results and Analysis Welding joint properties.
The Fe phase has an adverse effect on the properties of the alloy and will seriously affect the welding properties of the alloy.
The main reasons including two factors.

The influences of processing parameters on the mechanical properties of KGM films were investigated through orthogonal experiments.
However, KGM membrane is not widely used because of its poor mechanical strength and water-resistance properties, anti-bacterial and anti-corrosion [1-4].
The effects of processing parameters on the mechanical properties of KGM films were investigated.
The mechanical properties of KGM film was measured on the ZL-300 Bob-paper tensile testing machine and the ZZD-025C E-paper-folding tester.
Fig.3 Range comparison of factors affecting on tensile strength of modified KGM membranes Fig.4 Range comparison of factors affecting on folding endurance of modified KGM membranes As can be seen from Figure 3, it is obvious that the addition amount of MA has the most important effect on tensile strength, while swelling temperature influence is the least.

However, the research of FSW mostly focuses on mechanical properties of the weld material, a series of materials such as aluminum and copper have acquired great success, but the optimal research about the friction stir tool is still little.
A few major factors affecting FSW process, such as spin tool geometry, welding parameters, selection of tool material are addressed.
The mean analysis is performed based on the Signal/Noise ratios at quality characteristics of tensile properties, and is used to efficiently explore the important FSW factors that affect the quality of the welds The ranking in Table 1 further demonstrates that factors C,G, E, and F have relatively strong impact on functional variability, while A,B,D, and H have a relatively weak impact.
On the other hand, it suggests that the best levels for each control factors are A1, B2, C3, D3, E2, F1, G2, and H3 due to their high S/N ratios.
The optimal tool shoulder is found to be a cylindrical-screw type, which resulted in better mechanical properties such as the tensile test.

The contribution deals with evaluation of mechanical properties of thin hard coatings prepared by ARC evaporation on steel substrate K110.
Introduction Mechanical properties of thin films often differ from those of the bulk materials.
These additives, when used in small quantities, affect positively the structure of coatings, namely by improving their oxidative properties, refining the structure and upgrading the adhesive properties and thus contributing to better industrial properties [4].
A nanoindenter is a testing machine with high resolution that allows one to measure properties on sub-micro and nano-scale and serves particularly as a primary technique for determination of mechanical properties of thin layers and small construction parts.
Many studies are available dealing with deformation mechanisms of thin coatings by means of nanoindentation technique because many different factors may affect the coating and the substrate at loading.

Based on the microstructure observation, mechanical properties were discussed. 1.
The change in phase interface and dislocations after annealing is the fundamental reason for the change in mechanical properties [10-13].
After annealing, the recovery and recrystallization occur, the dislocation density decreases, and the lattice distortion decreases, which are all factors that cause the strength to decrease.
The mechanical and magnetic properties of copper-iron alloys were characterized, and the electromagnetic shielding properties were discussed.
It has excellent electrical conductivity, ferromagnetism, and good mechanical properties.

Results show that the distributions of mechanical properties in the DMWJ are very inhomogeneous.
(b) Local mechanical properties of the DMWJ.
Discussion The relationship between local mechanical properties and microstructures.
Effects of local mechanical properties on integrity assessment of the DMWJ.
Fig.5 shows that inhomogeneous local mechanical properties distribute across the DMWJ.

Forecasting principles of coal and gas outburst Coal and gas outburst is a dynamical phenomenon which is affected synthetically by geostress, gas, physical and mechanical properties of coal.
During the process of outburst, both of geostress and gas pressure are its motive power, but physical and mechanical properties of coal is the obstructive factor[7].
Coal and gas outburst is a complicated and dynamical phenomenon, caused by geostress, gas as well as physical and mechanical properties of coal, each prodictive index could reflect the change law of one or more factors, as shown in Table 1.
For the prediction of coal and gas outburst, physical and mechanical properties of coal usually means the properties of adsorption-desorption, most of the forecasting indexes in the “Rules of Preventing Coal and Gas Outburst” are related to the properties of adsorption-desorption, which could well reflect the factor of physical and mechanical properties of coal.
Coal and gas outburst is a complicated and dynamical phenomenon, caused by geostress, gas as well as physical and mechanical properties of coal, each prodictive index could reflect the change law of one or more factors.

EFFECT OF CASTING SIZE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF THIXOCASTINGS Hongxing Lu1,a Qiang Zhu1,b Youfeng He1,c Daquan Li1,d and Stephen P.
And the mechanical properties of semi-solid thixocastings may be independent of casting thickness and cooling rate.
The heat treatment parameters were also optimized to get better mechanical properties.
But, there is another decisive factor to the mechanical properties - defects.
The casting defects have decisive roles in the mechanical properties.