Search results

The AEREX350 alloy has superior creep resistance and rupture properties similar to the other MP family alloys.
With the increase of hot heading temperature, the heat affected area of bolt head increased gradually, and the grain size also increased.
If the heating length is too long, the heat-affected zone is too long, which leads to recrystallization of the alloy in the heat-affected zone and the loss of cold-working hardening effect.
Influence of Aging Treatment on Microstructure and Properties of Cold-drawn Alloy GH350 [J].
Research on high temperature mechanical property and microstructure of Ti6321 titanium alloy [J].

The electroconductive property of the EG/PLA filaments was quantified by measuring the linear resistivity of the filament samples.
Analysis of variance (ANOVA) was performed to assess the significant factors affecting the resistivity of the filament composites.
Experimental factors and levels.
Factors Unit Levels -1 (low) +1 (high) EG loading (A) % w/w 35 45 PEG:PLA ratio (B) - 1:10 1:20 Sonication time (C) hours 2 4 EPT Determination of 3D Printed EG/PLA Filament Composites.
The contour plots have curved lines because the model includes the interactions of the factors AC and BC.

And optical fiber Bragg grating sensor, due to its improving properties such as small size, light weight, outstanding anti-jamming capability as well as characteristic of wavelength division multiplex and wavelength encoding, can be used to monitor the strain and the damage of the aviation and aerospace structures.
Fig. 1 A specimen and experiment device In this paper, the fatigue properties of the bare optical under static, dynamic and cyclic loads have been tested.
When the optical fiber is buried in the matrix, we reckon that the separation between the wrap and the coating will not affect sensory property.
Hence the mechanical properties of wrap and core of fiber determines whether sensory property of optical fiber is applied.
Blocking materials Static fatigue test The fatigue property of brittle materials is characterized by the subcritical crack growth V, which can be calculated by the stress intensity factor KI: (1) Where A is the constant and n the fatigue life index

Using ultrafine powder to fill the porosity as an example to adjust the density uniformity and improve the properties of powder metallurgy products.
Finite Element Simulation of Influence of Different Compacting Processes on Powder Metallurgic Products Properties[J].Chinese Journal of Mechanical Engineering,2008,44(1):205-211.
FE Simulation of Influence of Height-diameter Ratio on Powder Metallurgic Product Properties [J].
Chinese Journal of Mechanical Engineering, 2007, 18(20): 2493-2496.
Finite Element Simulation to Influence of Compacting Mode on PM Product Properties [J].Powder Metallurgy Technology, 2008, 26(2):88-93.

Introduction The main failure modes of metal materials are fatigue, corrosion and wear which all start at material surface.Therefore, the structure and properties of the metal material directly affect its comprehensive properties.
Multiple surface strengthening technologies have been applied to improve the surface properties, including shot peening, rolling and inside extrusion, etc.
However, the crack growing speed could generally be reduced greatly, and the range value of factor threshold of stress intensity could be raised distinctly in some strengthened regions.
Experiments 7050 alloy sheet was made into Single-Edged Notched Tensile (SENT) samples, The common mechanical properties of the material are shown in table 1.
Chemic component and mechanical properties of the 7050 Composition percent [%] Trademark Si Fe Cu Mn Mg Cr Zr Zn Ti Al 7050 ≤0.12 ≤0.15 2.0～ 2.6 ≤0.10 1.9～ 2.6 ≤0.04 0.08～ 0.15 5.7～ 6.7 ≤0.06 rest Yield strength σb（Mpa） Tensile strength σ0.2（Mpa） δs （%） Ψ（%） 434 503 9 6 MTS880 material testing system was adopted for fatigue experiment in which tensile stress fatigue was adopted with load control.

Longer the nanoparticles remain in suspension in the base fluid; better thermal properties are expected of nanofluids.
An agglomerated nanofluid would possess properties that are different from their stable counterparts.
It is therefore necessary to study and analyze the influencing factors to the dispersion stability of nanofluids and the parameters that might affect the stability of nanofluids.
Numerous factors that affect the behaviour of nano particles inside the nanofluid may be one of the reasons.
Mohapatra, Particle agglomeration and properties of nanofluids, J.

As a flexible adjustment layer slab track is the slab track important core component of its performance directly affects the durability and maintenance workload slab track use , it determines the success or failure of the plate BALLASTLESS track the success of technology .
This test is mainly to discuss the impact of aluminum on the mountains of sand as aggregate of CA mortar properties.
Mechanisms mountain sand rocks in specially made mechanical crushing, its basic physical properties are shown in Table 1.
The reason is that aluminum powder mixed with excessive lead content in excess of CA mortar internal voids , as well as the cement can not provide more strength, a variety of factors in the external environment, the strength but somewhat reduced.

Previous experimental researches and observations indicated[2]that bond degradation is one of the important factors which have affect on the structure dynamic response.
The mechanical bite force between concrete and reinforcment rib disappeard at load end and was replaced by the follow ribs gradually.
Bond properties between reinforcement and self - compacting concrete[J].
An Experimental Study of Bond-Anchorage Properties of Bars in concrete.

Prestressed structure has many advantages, such as: improve the structure performance; reduce component section height, reduce weight, make full use of high strength reinforcement; has a good crack closure properties and deformation recovery performance; improve the shear bearing capacity, and improve the fatigue strength, etc.
But on the other hand, there are many barriers of prestressed development factors, among which the most outstanding one reason is high cost of prestressed dosage.
To a certain extent, it has seriously affected the popularity of prestressed technology promotion.
Pang Ping, Mechanical properties research of unbonded prestressed concrete continuous slab, a master's degree thesis, 2001.6

Finally, the execution unit of the mechanical transmission mechanism drives the mechanical system to run.
Supposed that the synthesize force of the execution units is , the driven force of each mechanical drive axis is （Fx，Fy，Fz）.
In the range, other factors to affect the feed rate will be considered.
Its maximum interpolation error is better than 3.5nm, which shows that not only the geometric properties of the curve interpolation must be considered but also the actual trajectory characteristic of interpolations between points from the servo characteristic.