Search results

The results showed that the Ca2P2O7 could apparently decrease the sintering ability and mechanical properties of β-Ca3(PO4)2.
The previous studies have shown that the biological properties, sintering ability, mechanical strength, thermal stability and degradability of the Ca-P based bioceramics could be strongly affected by the chemical composition of Ca/P molar ratio [2-5].
The distinct characteristic of the microstructure and RD of β-TCP bioceramics doped with CPP additives might result in quite different mechanical strength and other properties.
With the increase of CPP additives, the RD decreased gradually, which resulted in the decrease of the mechanical properties.
The addition of CPP resulted in a significantly decrease of the sintering ability and mechanical properties of β-TCP bioceramics.

In addition to this the final product has to have the right level of mechanical properties.
It has been reported [26], using a valve rocker arm as an exemplar, that the level of mechanical properties attainable from both Ti and Ti6Al4V using powder compact forging depends on several factors [26].
Mechanical Properties Although the published work on powder compact forging is scarce, the available evidence confirms that good levels of mechanical properties are achievable [24, 26, 31, 32].
This offers an opportunity for the wider application of Ti-6Al-4V parts with high oxygen content, due to their excellent mechanical properties.
Tang, Microstructure and mechanical properties of titanium alloy connecting rod made by powder forging process, Materials & Design, 33 (2012) 213-219

Workpiece ground surface was free of crack, but severe plastic deformation layer and light burn appeared because of chemical reactions and mechanical factors.
It has good comprehensive mechanical properties and is the most intensively researched and tested titanium alloy.
Table 2 shows mechanical and physical properties of this material [1, 4].
So the construction of complicated layer on ground surfaces could be contributed significantly to chemical reactions and mechanical factors.
The construction of them could be contributed significantly to chemical reactions and mechanical factors. 3.

The results show that mechanical properties of the welded joints will be improved by LSP.
Residual stress of the welding is one of the main factors to affect the structure strength.
As a result, plastic deformation occurs and a hardened layer is formed on the surface of the metallic target, enhancing the mechanical properties of the material such as hardness, fatigue strength, and stress corrosion resistance [5].
At the same time, the mode of ②, ③ laser shock parameters are adopted, the residual stresses of the welding zone are compressive stress, and the hardness excesses that of substrate, which will be benefit to improve the welding mechanical properties [7].
The main conclusions are shown as follows: (1) Mechanical properties of the welding zone by laser shock processing has been obviously improved, such as the stress corrosion resistance, wear resistance, surface hardness and etc. (2) when the laser power density exceeds roughly 1.2×1010 W/cm2, the surface residual stress in the welding zone starts to change.

It discusses the main influencing factors of the piezoresistive effect.
Its conductivity has relationship with rubber matrix, filler type, filler content, temperature and the other factors [1,2].
But it has an adverse effect on the mechanical properties.
Thus it affects the mechanical properties.
A large amount of the filler will affect its dispersibility, so that the plastic material hardens, becomes poor releasability and reduce the plastic of processing properties and mechanical properties of the material.

Element nodes slightly affect the result of safety factor and final deformation of the slope.
The first is about model material properties in which Mohr Coulomb failure criterion is employed and the other is to explain the strength reduction method that is to obtain factor of safety of the slope in this study.
Soil properties 2D Plain strain slope problems are considered in this work.
In this study, the Mohr- Coulomb constitutive model is employed to express soil material properties and Mohr Coulomb criterion is used to relate the shear strength, internal friction angle, and cohesion of the soil material.
Fig. 3(a)~(e) and Fig. 4(a)~(e) show the failure slip line of the slope regarding to different soil internal friction ϕ and soil cohesion c and their corresponding safety factors are shown in Fig. 5(a) and (b).

Effects of Biaxial Stress Condition for Fatigue Properties of Magnesium Alloy Yasumi Itoh1, a and Akira Shimamoto2,b 1 Graduate School of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Okabe, Saitama, 369-0293, Japan 2 Dept. of Mechanical Engineering, Saitama Institute of Technology, 1690 Fusaiji, Okabe, Saitama, 369-0293, Japan a ito@nrips.go.jp, bshimamot@sit.ac.jp Keywords: AZ31B, Biaxial Stress, Fatigue, Crack Propagation, Biaxial Fatigue Tester, Stress Intensity Factor Range Abstract.
The purpose of this study is to investigate the effect of biaxial stress on the fatigue crack growth properties ⊿KⅠ-da/dN.
As a result, it became clear that existence of a stress parallel to a crack affects crack progress velocity [7] .
The mechanical properties of magnesium alloy AZ31 B-O are shown in Table 1, and the dimension and form of a specimen (cruciform specimen) are shown in Fig.1.
Stress intensity factors KⅠ were computed in FEM analysis using the displacement extrapolation method.

In this study, it is showed that surface treatment affects adhesive strength and durability of aluminum/polycarbonate single-lap joints, and loading speed affects tensile-shear strength of adhesive joints.
The factors affecting durability of a metal to polymer bond are: the properties of the surface treatments (e.g. the production of a stable metal oxide layer), the adhesive film (e.g. the porosity of the adhesive) and the adherend material (e.g. the effect of moisture on the material properties).
As polymers, the mechanical behavior of adhesives is sensitive to the rate of straining that they experience [9].
In this study, it is showed that surface treatment affects adhesive strength and durability of aluminum/polycarbonate single-lap joints, and loading speed affects tensile-shear strength of adhesive joints.
The actual effect of abrasion may be a result of one or more of several factors, including enhancing Table 1.

Various current and proposed CPC applications all have specific setting and hardened cement properties.
In that respect a five-factor, three level central composite design (CCD) was applied to develop an empirical relationship between the response and factors [5].
Response surface model and optimal factors of the system was elucidated, as well.
R2=+140.22-5.77*A+3.59*B+9.32*C+12.50*D+7.02*E-4.73*A*B-8.70*A*C+7.48*A*D+ 6.17*A*E+2.33*B*C-0.11*B*D+2.14*B*E+10.11*C*D+16.98*C*E-13.89*D*E-11.09*A2 – 1.09*B2-19.09*C2-4.09*D2 +6.91*E2 (2) Although all the main factors are affecting the compressive strength response of HA based cements, the seed concentration (D) has the highest effect.
Summary Setting time and compressive strength HA based cement properties can be expressed by the second order polynomial CCD model.

The mechanical properties were characterized using tensile, hardness, and wear testing, where as the microstructural observation was performed using an optical microscope.
It has been shown that SiC particles will increase the mechanical properties of the composite including the strength, ductility, hardness, and fatigue strength [3].
In this case, strengthening particle such as SiC can increase mechanical properties of aluminum such as tensile strength, compressive strength and hardness [13].
The cause of this decrease could be due many factors such as inadequate particle distribution, porosity, or microstructure that triggers agglomeration.
Hmida, "Silicon Carbide: Synthesis and Properties," in Properties and Application of Silicon Carbide, Rijeka, InTech Europe, 2011, pp. 361-390