Search results

NiTi is considered biocompatible and it possesses mechanical properties that make it an especially good candidate for bone tissue surroundings.
It possesses mechanical properties that make it an especially good candidate for bone tissue surroundings.
The surface properties of NiTi have been suggested to affect the tissue-implant interaction [13].
AFM, X-ray diffraction (XRD) and electrical resistance measurements were used to analyze the surface properties of oxidized NiTi samples and the effect of oxidation on material properties.
NiTi is considered biocompatible and it possesses mechanical properties that make it an especially good candidate for bone tissue surroundings.

To attain these properties for the pipe and the weld seam, especially in the heat affected zone (HAZ), is necessary to obtain some microstructures which enable the steel to reach the required mechanical and metallurgical properties.
The pressure rolls is pushing pipe edges together as in a forging process and complete the pipe welding process [6] Fig. 1 Schematic diagram of the welding process HF-ERW Pipes[5] Fig. 2 Work coil, tube and squeeze rolls [4] The main welding variables affecting the weld quality in HF-ERW are: (1) mechanical factors (edge formation), such as degree of ‘’V’’ opening, parallel edges through the “V” and relative position of edges, squeeze force and upset amount; (2) electrical factors: welding frequency, welding power, current, voltage and weld speed and (3) properties of base material: weldability, chemical composition, structure [6].
The weldability is one of the principal factors with a major influence on the quality of the welded pipes.
This material property is directly influenced by a series of factors, such as: chemical composition, (mainly by the carbon content), equivalent carbon, chemical and structural unhomogeneities and steel purity.
But reducing the content of these two elements leads to drastic decrease of the mechanical properties.

Liu Zhihong [32] found that the influence of glass optical properties on the thermal performance of the DSF is the largest in summer conditions through the orthogonal experiment about the influence factors on cavity heat transfer.
Giorgi [34] believed one of the factors that affect the size of DSF heat flux is convective heat in the façade cavity.
Therefore, the incidence relation on each structure factors is also the factor to analyze the property of DSF heat transfer.
Moreover, the interrelation between structure factors and meteorological factors are worth paying attention to in analyzing the property of DSF heat transfer.
Conclusions DSF is an energy-saving building unit, whose structural factors affect its heat transfer property.

Table 2 showed the mechanical properties of low carbon steel JIS SS400 [9].
Mechanical Properties of Low Carbon Steel JIS SS400.
Mechanical Properties Value Tensile Strength, Ultimate 415-515 MPa Tensile Strength, Yield 230 MPa Elongation at Break 20% Bulk Modulus 160 GPa Shear Modulus 80 GPa MIG Welding.
Factors that are expected to affect the surface residual stress after the deep rolling process are three factors: rolling pressure, rolling speed and the number of passes.
Table 8 shows that the most influential factors affecting the residual stress were factor C (Number of passes), factor A (Rolling pressure) and factor B (Rolling speed) respectively.

The elastic mechanical properties of silicon nanocantilevers are of prime importance in biotechnology and nanoelectromechanical system (NEMS) applications.
Therefore, in order to make these NEMS applications reliable, the exact evaluation of mechanical properties of silicon nanocantilevers is essential and critical.
It is noted that most of the previous researches focus on the influences of surface effects on the size-dependent mechanical properties.
These factors may significantly affect the elastic properties of silicon nanocantilevers.
Ge, Mechanical properties of silicon nanobeams with an undercut evaluated by combining the dynamic resonance test and finite element analysis, Chin.

The Effect of Aging Temperature on Mechanical Properties of Banana Pseudostem Fiber Reinforced Polymer Composite Siti Nur Zafirah M.
Tensile, flexural and impact tests were performed to investigate the mechanical properties of banana pseudostem fiber reinforced composite.
Aging or degradation induces detrimental changes in mechanical properties and temporary or permanent transformation in matrix-fiber interfaces [7].
Overall from this result, the oxygen content of the environment is a principal factor affecting the strength reduction [9].
Tensile, flexural and impact tests were performed on non-aging and aging BPFRC in order to compare the mechanical properties.

Considerable grain refinement and enhanced mechanical properties were obtained in UWFSW joints.
Mechanical properties of weldment depend on microstructure, leading in turn to the increase in tensile properties and hardness.
Mechanical properties characterization.
The weld metal microstructure has an important influence on mechanical properties of FSW weld.
Two factors, grain size and softening effect influence the hardness of the SZ.

Therefore the welding parameters (preheat, post welding heat treatment (PWHT), shield gas, backing gas), affecting the microstructure of the weld, also have serious affects on the fatigue properties.
The other factor, that determines the mechanical properties of the heat affected zone, is the evolving prior austenite grain size under the welding process.
Too much heat transfer could raise the size of the prior austenite grains, which can not assure good mechanical properties [6].
Martensitic microstructure in the heat affected zone (dark part is the weld metal) To examine the distribution of mechanical properties within the welded joints, microhardness measurements were made as well.
Prohászka: Mechanical properties of metals and alloys (in Hungarian), Mőegyetemi Kiadó, (2001), pp. 233-236 [7] T.

An advantageous array of mechanical properties achieved by such steels, i.e.
Influence of various parameters of thermo-mechanical treatment on mechanical properties of high manganese X8MnSiAlNbTi25-1-3 TWIP-type steel: yield strength Rp0.2, tensile strength Rm and total elongation eum On the figure 4 are presented results mechanical properties of new developed high-manganese TWIP-type steel, with various structures after various variants of thermo-mechanical treatments.
The high-manganese austenitic steels with the properly formed structure and properties and especially with the big strain energy per unit volume yield the possibility to be used for the constructional elements of cars affecting advantageously the passive safety of the vehicles' passengers.
Mazurkiewicz, Mechanical properties of high-manganese austenitic TWIP-type steel, Materials Science Forum 783-786 (2014) 27-32
Mazurkiewicz, Structure and mechanical properties of high-manganese steels, Comprehensive Materials Processing 2 (2014) 199+218

Finite Element Analysis on Mechanical Properties of Lathe Spindle Y.M.
Yu Zhongyuan University of Technology, Zhengzhou, 450007, China flackstorm@163.com Keywords: Lathe spindle, Mechanical properties, Finite element analysis, ANSYS Abstract.
The ANSYS software was used to carry out finite element analysis on the mechanical properties of lathe spindle, taking C7620 lathe as research object.
Through static analysis, the linear static mechanical properties of spindle in specific operation are obtained, including the stress and deformation of spindle in processing; by dynamic analysis, the vibration characteristics of spindle including the natural frequency and vibration mode are determined, and whether the spindle speed is reasonable or not is judged.
During the modeling, for easier finite element analysis and the improvement of computational efficiency, the model is simplified without affecting the final calculation precision, mainly including that thread and keyway are processed as entities and the partial features such as tool escape and chamfer are ignored.