Search results

Reinforcement corrosion is one important factor affecting the durability and safety of reinforced concrete structures.
The carbonation process and the factors affecting concrete carbonation are discussed according to test results.
Carbonation would change the internal composition and orginization of concrete and then affect the mechanical properties and durability of concrete structures.
Relevant properties of the cement were given in table 1 and table 2
The main factor affecting the carbonation depth of mineral admixture introduced concrete is W/C ratio.

The effects of Y and Nd on microstructure and mechanical properties of AJ62 alloy were investigated.
Rare earths have important affects to magnesium alloys, which can refine dendrite and improve casting capability and elevated temperature properties [6].
In this study, the effects of Y and Nd elements on microstructures and mechanical properties of Mg-Al-Sr alloys were investigated.
The increment of the deformation resistance means the increase of strength, hardness and other mechanical properties of alloys.
Thus, the alloys still have good mechanical properties at elevated temperature.

According to the characteristics that liquid viscosity is mainly determined by the liquid temperature and the property that mechanical friction can improve the liquid temperature, the effects of slurry temperature, working pressure and polishing speed on the heterogeneity of polishing rate were investigated.
Liquid viscosity is mainly decided by the temperature, but the increase of polishing pressure and polishing speed can aggravate the friction effect between the wafer and polishing pad, friction energy can be further converted to internal energy resulting in the increase of slurry temperature, thus affecting the slurry viscosity.
The response surface analysis results of the corresponding factors are shown in Fig.6, 7, 8.
Fig.7 Response surface graph of A and C factors Fig.8 Response surface graph of B and C factors Fig.9 The fitting optimal value of desirability Fig.10 The fitting optimal value of HOPR 5 Conclusion The fluid flow model in micro-channels is established.
It indicate that the liquid viscosity is the main factor affecting the liquid mean velocity.

Mechanical properties of TC16 were measured by tensile experiments and use the BP neural network model to train and simulate the experimental data.
Structural stress and thermal stress will be formed inside the metal as well as the metal properties will be affected [1].
TC16 (Ti-2.5Al-5Mo-5V) titanium alloy is alpha + beta two-phase titanium alloys, which have good plasticity and good comprehensive mechanical properties and is often used as a fastener materials.
BP neural network method can be used to further study other factors impact on the mechanical properties of TC16 alloy and help to further understanding of TC16 alloy.
BP neural network prediction of the mechanical properties of porous NiTi shape memory alloy prepared by thermal explosion reaction[J].

Fabrication, Microstructure and Mechanical Properties Relations of Ferroelectric Barium Titanate Reinforced with Alumina Micro/Nano Particulates Sukanda Jiansirisomboon a , Anucha Watcharapasorn b and Tawee Tunkasiric Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand a sukanda@chiangmai.ac.th, banucha@stanfordalumni.org, ctawee@chiangmai.ac.th Keywords: Ferroelectric, Phase, Microstructure, Composite, Mechanical properties.
The effects of reinforced alumina particulates on some properties of ferroelectric barium titanate ceramics were investigated.
Improvement of the mechanical properties of the ferroelectric ceramics is thus strongly required.
The effect of the Al2O3 particle size on the phase composition, microstructure and mechanical properties of the BaTiO3 ceramics is investigated and discussed.
Furthermore, this study also found that only a certain amount of Al2O3 reinforcements could significantly improve these mechanical properties in the composite/nanocomposite BaTiO3/Al2O3 systems

However, it is well known that microstructure and mechanical properties in different regions of weld joint are highly inhomogeneous.
Consequently, the global mechanical properties is strongly affected by the local mechanical properties for a welded joint.
The aim of this paper is to determine the local mechanical properties of base metal, weld metal and HAZ of the A7N01 aluminium alloy.
Tensile properties.
Peterson's stress concentration factors. 2nd ed.: (Wiley, New York 1997

In this work, the microestrutural characterization and mechanical properties of atomized Al-9Si-3Cu alloy powders and extruded samples are presented.
The mechanical properties of extruded samples were also characterized by tensile test and hardness measurements.
Mechanical properties results for extruded samples with powders of different size ranges.
by reduction of intermetallic compounds, especially b-Al5Fe2Si phase that exhibit high hardness and low deformability when localized in the interfaces of the particles preventing the connection and bonding among the powder particles, affecting considerably the mechanical properties.
Hatch: Aluminum: Properties and physical metallurgy, ASM, Metals Park, OH, 1984.

The influence of Tungsten Insert Gas (TIG) and Plasma welding on the microstructure, mechanical and magnetic properties of non-oriented electrical steels is presented and evaluated.
Finally, the mechanical properties had been analyzed.
Mechanical properties of NO electrical steel joints by TIG welding and Plasma welding had been studied comparatively.
In order to improve accuracy of measurement and reduce the influence of factors such as microstructure, Magnetic Barkhausen Noise (MBN) method has been used.
Hristoforou for the helpful discussions and advice on the subject of magnetism, magnetic materials and their correlation with microstructure and mechanical properties.

The ceramics sintered at 1200 °C were characterized as for density, crystalline phases, microstructure and microwave dielectric properties.
The performance of a DR is assessed by characterization of its microwave dielectric properties: dielectric constant, quality factor and temperature coefficient of resonant frequency.
Other factors such as grain size, polarization and conductivity of microstructures can also affect the properties, although with less intensity; we can consider that microwave dielectric properties are affected more by the crystalline structure and chemical compounds present in each one of the investigated ceramics.
Microwave dielectric properties of the investigated ceramics.
Rangel: A study of microwave dielectric properties of ZnO-Nb2O5-TiO2 ceramic system for applications in space communications.

Discussion on Masonry Structure Model Mechanical Property Test Gonglian Chen a and Linjun Si b 1School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450011, China achengonglian@gmail.com, bsilinjun1980@163.com Keywords: masonry; mechanical property; test.
Introduction In structure mechanical property test, because of the prototype structure test has many shortcomings, such as large investment, long period, strict laboratory equipment, measurement accuracy is affected by the environmental, and so on, the structure model test played an important role in the research of structure engineering.
Masonry Material The masonry structure is a composite material of bulk materials (brick, block) and the mortar, from the material sense, the mechanical properties of the masonry structure to simulate is too complex, the reason is that: masonry is a composite material, all part of the component must be simulated, such as brick and block, mortar and steel.
Because of the difference of the size between the model specimen and prototype specimen, its mechanical properties are also different to each other.
The former approach in determining has a great chance and human factors, and the latter approach is more direct and objective.