Search results

In the research presented, the mechanical properties with regard to fatigue and fatigue crack propagation of laser beam–welded AA2198 joints and four-stringer panels were investigated.
In this study, the base material (BM) properties were investigated.
Details on the process parameters and their influence on the microstructure and mechanical properties of the laser beam-welded aluminum alloy can be found in [12-14].
Mechanical properties The tensile test results for butt joints and hoop-stress test results for T joints show that there is a reduction of the ultimate tensile strength of approximately 25 % due to LBW (Figs. 4a and 4b).
The AA2198 BM shows noticeable anisotropy of the fatigue properties (Fig. 5).

Titanium alloys have good mechanical properties and organizational stability.
However, due to the larger viscousity of titanium, a reasonable choice of the characteristic parameters of oilstone will directly affect the quality and efficiency of honing processing.
However, due to the larger viscousity of titanium, a reasonable choice of the characteristic parameters of oilstone will directly affect the quality and efficiency of honing processing.
Wang: China Mechanical Engineering Magazine Office Vol.14(2003) No.6, p. 1268-1271
Luo : The Neural Network Method of Mechanical Engineering (2003) No. 7, p.153 - 162

The Structure and Properties of Dispersed Aluminium Composite Compounds Made by Welding Friction with Mixing A.N.
The same samples were used to determine the properties of seam metal at elevated temperatures.
Mechanical properties of welded compounds of the materials studied, obtained by welding friction with mixing Material Temporary resistance of welded compoundσВ, [MPA] Welding strength factor Temporary resistance of the seam metal σВШ, [MPA] Seam metal strength factor The angle of the bend α, hail.
It can be foreseen that the wear debris would affect the quality of the weld and reduce the properties.
Wang, The effect of interface defect on mechanical properties and its formation mechanism in friction stir lap welded joints of aluminum alloys, Journal of Materials Processing Technology, Vol. 238 (2016) 244–254

Tang et al. [2] applied Taguchi method and ANOVA to minimize warpage on thin plate parts (120 mm length, 50 mm width and 1mm wall thickness) and to determine the most significant factor affecting warpage on the molded parts.
The properties of this material are shown in Table 1.
The best setting parameters and the most significant factors affecting warpage on front panel housing for both types of cooling channels then determined.
Meanwhile, Tables 5 and 6 shows the most significant factors affected warpage on front panel housing.
The numbers of experiment can be reduced by using Taguchi orthogonal array while the significant factors that affected the warpage on the molded parts can be determined using ANOVA.

Chemical compositions and the mechanical properties of AA6061-T651 and AA7075-T651 are given in Tables 1 and 2 respectively.
The assignment of the levels to the factors and the various parameters used are given in Table 3.
Taguchi’s L9 orthogonal array was used to design the experiments with three factors and three levels.
Ø From this analysis, it is revealed that rotational speed, tool pin profiles are prominent factors which affect the welding of aluminium alloys.
Effect of welding parameters on mechanical and microstructural properties of dissimilar AA6082– AA2024 joints produced by friction stir welding.

Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime.
For increase cutting tool durability is necessary maximally possible elimination of these factors.
Specification of cutting tools durability in machining process of steel 16MoV6-3 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises.
Ceramic cutting tools have been in use for approximately 90 years. [4,10] As new materials were developed during a specific era, the properties of the cutting tool improved.
Material for workpieces is from specific material list with guaranteed chemical structure and mechanical properties Table 1 Chemical structure of material 16MoV6-3 [%] Chemical structure of 16MoV6-3 [%] C Mn Si Cr Mo Al V S P 0,1-0,18 0,45-0,7 0,15-0,4 0,050 0,4 - 0,6 0,025 0,22 - 0,35 do 0,04 do 0,04 Table 2 Mechanical properties of material 16MoV6-3 Mechanical properties of 16MoV6-3 Rm [MPa] A5 [%] HB Rp0,2 [Mpa] E [GPa] 470 - 640 17 135-183 294 214 Fig. 3 Microstructure of 16MoV6-3 These experiments were made under defined technological conditions.

Then the micro structure and mechanical properties of specimens sintered with the best optimal parameters have been analyzed.
After the orthogonal experiment analysis, one parameter combination was chosen to fabricate specimens with aim to further analyze the micro structure and mechanical properties.
Mechanical properties test process For further examination of the mechanical properties of sintered specimens, the experiment specimens were designed as dimension 100×10×6 mm3 in shape of dumbbell for tensile experiment, and size in 40×6×6 mm3 specimens for flexuralexperiment.
Conversely, the porosity is increase with the increase of other factors.
Mechanical properties of sintered PC specimens Except possess some medical properties, the medical parts must maintain sufficient mechanical properties for use requirement.

During the engineering survey and design and construction practice, in order to study the slope stability analysis of slope deformation and destruction or judgment, we must study and learn the basic mechanics properties of rock, such as rock soils, internal friction angle and cohesive strength and other mechanical parameters first; then, we need identify and verify the slope structure conditions and spatial morphology, such as slope geotechnical structure discontinuity and combination of features; Combined with the slope rock and soil mechanics properties and slope structure conditions, to analyze the limit slope height and the limit slope angle.
According to the engineering geological and geophysical data, field outcrop on UDL Archeozoic Fuping group put a shop group (Ar3f ) biotite plagioclase gneiss, from top to bottom has weathered, strong weathering, weathering in three kinds of soil properties.
When the natural disaster happens, rainfall and rainfall intensity are the main factors which affect it.
If we do not take the two factors’ effects into consideration, the calculated results would have a big difference with the actual engineering, which will cause problems in engineering easily.
The loss of economy, life and property is inestimable.

For most of these applications, the porous materials need to fulfill specific requirements regarding their microstructure, porosity, permeability and mechanical properties [6].
To tailor the properties for each application it is necessary to control the factors affecting the sintering process such as the initial particle characteristics, the microstructure, the additives and the processing technique.
In this paper, the effect of maintenance technology on the properties of quartz sand unfired porous materials was investigated.
The properties of the unfired porous quartz bricks were tested.
The effect of chemical admixtures and mineral additives on the properties of self-compacting mortars.

Meanwhile, ductile polypropylene fiber has stable chemical properties, high specific strength, and fiber bridging capacity.
As the concrete substrate has been stable, and RM has some shrinkage behavior, which will lead to the interface stress emerging between RM and the surface of the structure, thus affecting the interface bonding strength and the final durability of the structure with RM [10].
(Shenyang, China), its physical properties are shown in Table 3.
Kasal, Effect of alkali treatment on microstructure and mechanical properties of coir fibres, coir fibre reinforced-polymer composites and reinforced-cementitious composites, Constr.
Sun, Bonding and toughness properties of PVA fibre reinforced aqueous epoxy resin cement repair mortar, Constr.