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Additionally, there was less than 3% observed variation in the three-way tensile properties. 1.
The process was found to be capable of producing rings with distinct mechanical properties but the same final geometry [8] .
The head forgings underwent mechanical property testing and organizational assessment. 2.
When comparing the size of the F-value of each factor with each other, it can be known that the order of significance of the factors affecting the stability of the head-forming process is as follows: λ1 (under pressing speed) > λ4 (deformation temperature) > λ2 (rotational speed of the lower mold) > λ3 (inclination of the upper mold).
Among the factors affecting the stability of head formation, the quadratic terms λ12、λ22、λ32 and λ42 all manifest extremely significant, but the intersection factor between the two factors manifests non-significant.

It is shown that deformed steel has an advantage over cast steel in terms of mechanical properties.
Service properties of such parts depend to a large extent on metallurgical and technological factors [1-7].
According to the technology of manufacturing rolled stock, the degree of reduction (drawing) of metal from MNLS is significantly less than from ingot and this fact affects the mechanical properties of steel.
Surface layer and operating properties of machine parts, Mechanical Engineering, Moscow, 1988
Mechanical properties of metals.

A Study of Effect Factors on Sodium Silicate Based Expanded Perlite Insulation Board Strength Yinglang Tian1,a, Xianlong Guo 2,b, Delong Wu1,c, Shibing Sun1,d 1.Beijing University of Technology Material Science and Engineering College Beijing 2.
Experiment about sodium silicate concentration affecting on perlite’s strength We dilute sodium silicate into aqueous solution as shown in table 1, spray the aqueous solution on the surface of expanded perlite particle using atomizing sprayer, and mix evenly[6].
Experiment about pressing pressure affecting on expanded perlite We dilute sodium silicate into aqueous solution with solids content at 30%,spray aqueous solution and expanded perlite( mass ratio of 2.5 :1 )on the surface of expanded perlite particle using atomizing sprayer, and mix evenly, then pour it into forming mould.
Experiment about heating system affecting on perlite’s strength We dilute sodium silicate into aqueous solution with solids content at 30%,spray aqueous solution and expanded perlite ( mass ratio of 2.5 :1 )on the surface of expanded perlite particle using atomizing sprayer, and mix evenly, then pour it into forming mould.
a. effect of pressing pressure on perlite's apparent density b. effect of pressing pressure on perlite's flexural and compressive strength c. effect of pressing pressure on perlite's tensile strength Fig 2 Effect of pressing pressure on expanded perlite insulation board’s mechanical properties Fig 2 (a) reflects: with the increase of pressing pressure, volume of the same quality expanded perlite board is compressed, so apparent density is on the rise.

TG stabilizer is mechanical property well and simple to construction.
Influence factors and level.
Main factors affecting cement and flyash stabilized soils are: cement content, flyash content and stabilizer content. 3 levels were chosen that cement content 4.0%, 5.0%, 5.5%. flyash content 10%,15%,20%.
the ranking of factors influencing 7d and 28d strength of stabilized soil is cement content>stabilizer content>flyash content.
It is a good mechanical property material and simple to construction.

In this technic, the TIG welding parameters are the main factors, which affect weld characteristic and then defines the in-service behavior of the weld joint.
The modeling established by Response Surface Methodology (RSM) makes it possible to form mathematical models in order to analyze more closely the influence of the welding process parameters on the properties of the weld joints while taking into account the various relevant factors governing it [9].
The main objective of our work is to optimize mechanical and metallurgical behavior in the Hate Affected Zone (HAZ) of weld joint.
Three factors, 3 levels design consist of 27 sets of coded conditions.
The first and 27th trials are chosen, considering the big difference in mechanical properties between them.

It is also found that water play as a key factor in CMP.
Silicon nitride (Si3N4), especially, is considered as the most promising material for high speed, high temperature and high precision bearing for jet engine, high precision machine tool and apparatus due to its desirable properties [1].
A critical factor affecting the performance and reliability of Si3N4 balls is the quality of the surface after final polishing, for that ceramics are extremely sensitive to surface defects resulting from machining processes owing to their high hardness and inherent brittleness.
Experimental Set-up and Procedure Table 1 lists the experimental conditions for finishing of Si3N4 balls, and Table 2 lists the mechanical properties of Si3N4 balls in this study.
Table 1 The experimental conditions Si3N4 balls Abrasive Slurry based fluid Abrasive concentration Load Plate rotation Polishing time per trial Diameter: Ø5mm Roughness (Ra): ~60nm B4C Al2O3 SiO2 Fe2O3 Cr2O3 CeO2 Water 10-30% wt ~0.5N/ball 30rpm 120min    Table 2 Mechanical properties of Si3N4 balls Properties Value Density Hardness Young's modulus Poisson's ratio Compression strength Bend strength 3200 Kg/m 3 HV 1500 310 GPa 0.26 >3500 MPa 600 MPa The surface roughness was measured by Pethometer S2 (Maer Co.)

However, it is hard to measure their precise shapes and mechanical factors.
Using these approximation, we can evaluate various properties of cracks.
In Fig. 3, b’ was defined as the length when stress intensity factors K at point D is the same as at D’.
Stress intensity factor range of a crack at notch root, ΔKnr was affected by a stress distribution of the notch.
Takase, Stress concentration factors for round and flat test specimens with notches, International Journal of Fatigue. 17, 3 (1995) 163-178

The mechanical properties induced by the addition of both of modified kaolin were analyzed.
The mechanical properties of the foams with calcined kaolin were better than that with intercalated kaolin.
However, this expected result was not consistent with that of the mechanical properties, indicating that the role of hydrogen bonding was not the major factor in improving performance, but this conclusion was contrary to that of Xu[13] and Cao[14].
Fig. 2 FTIR spectra of pure PU foams, PU/C-K foams and PU/I-K foams Mechanical properties.
The mechanical properties of PU/modified kaolin nanocomposites, PU/C-K nanocomposites, PU/I-K nanocomposites and pure PU were given in Table 1.

The friction and wear properties of the coatings were investigated in Ml-10 friction and wear tester at dry friction condition.
The results show that the amorphous content is the main influencing factors to wear resistance of coating.
Introduction Since the metallic glasses had been developed by Duwez in 1960[1], bulk amorphous alloys have attracted much attention for a few decades due to the superior properties including mechanical hardness, corrosion resistance, and wear resistance properties [2-4].
For these excellent properties the amorphous coating has been applied in many aspects such as mechanical, aerial, chemistry and communication [5].The size of amorphous alloys is a very important factor for their application.
The amorphous content and coating density are all important influencing factors for wear resistance of coating.

Furthermore, various factors influencing the qualities of ultraviolet-curing abrasive tools are discussed.
The dominated performances involve several factors such as retention of the particles in the bond, mechanical performances of bond, adhesion of bond to substrate, etc.
The shrinkage of UV-curing resin is a very important factor affecting the adhesion performance when it is cured.
Improvement of the performances of ultraviolet-curing abrasive tools involves several key factors.
Appropriate fillers have good effects on reinforcing mechanical properties of ultraviolet-curing abrasive tools.