Search results

The aluminium-magnesium alloy AA5xxx series, which industry seeks due to its good mechanical properties, is also characterized by high springback values and by the Portevin-Le-Chatelier effect (PLC) [1].
These are the two main factors which limit the dissemination of AA5xxx series in the automotive industry.
Its composition and its mechanical properties are presented in Table 1 and Table 2, respectively.
Figure 1– 2D tools sketch with its main dimensions Table 1- Composition in weight % of Aluminium AA5754-O Cu Mn Mg Si Fe Cr Al ≤0.10 ≤0.50 2.60-3.60 ≤0.40 ≤0.40 ≤0.30 93.6-97.3 Table 2 – Mechanical properties of AA5754-O 1.0 mm sheet.
The mechanical properties of the AA5754-O alloy were evaluated by performing tensile and shear tests [3,9,10].

This involves mainly finite element method to simulate particular properties of designed structures or products.
The creation of a correct virtual prototype depends on many factors especially when modelling very complex structures.
One of the most important factors is sufficiently precise modelling of ties between structural parts, which influences the accuracy of results significantly, which was proved before.
Selection of connection types for combination of metals and alternative materials (e.g. fibre composites) is limited as some joints can damage fibres or matrix of composite material and so affect mechanical properties of whole structure.
The basic material properties of the composite pipe are shown in Tab. 1.

Mechanical properties Table 2 shows the variation in the comparison of mechanical properties and impact energy of different alloys as a function of heat treatment.
No significant differences were indicated in the mechanical properties of these alloys in as-cast state.
Gruzleski, Factors to consider in modification.
Gruzleski, Impact properties of Al–Si foundry alloys.
StJohn, Effect of a short solution treatment time on microstructure and mechanical properties of modified Al–7 wt.% Si–0.3 wt.% Mg alloy.

Meanwhile, the billet tended to stick to the mold wall due to several factors, such as too low a pouring temperature, a less-round mold shape, the poor quality of the hot top and graphite ring, and the water that entered the mold during the casting process.
This casting defect is affected by the inner surface quality of the ring mold and the mold wall.
Surface unevenness and other defects can be caused by factors such as changes in the head of the metal in the mold, differential heat transfer around the mold's periphery due to variations in lubricant thickness or lubricity, or sudden change in the flow speed or discharge angle of the metal stream exiting the mold.
References [1] Silva M S, Barbosa C, Acselrad O and Pereira L C 2004 Effect of chemical composition variation on microstructure and mechanical properties of a 6060 aluminum alloy J.
Sci. 36 1965–76 [13] Wang R, Zuo Y, Zhu Q, Liu X and Wang J 2022 Effect of temperature field on the porosity and mechanical properties of 2024 aluminum alloy prepared by direct chill casting with melt shearing J.

The eutectic cells size is influenced by factors such as cooling rate and carbon content or by process related parameters.
Conclusion High cooling rates refine the dendritic network, the eutectic cell structure, and the pearlite inter-lamellar spacing resulting in improved mechanical properties.
Increasing carbon content mainly reduces the amount of the primary phase which negatively affects the mechanical properties.
Konecná, Microstructure and mechanical properties of pearlitic lamellar cast iron, Mat Sci Eng A - Struct 488 (2008) 529-539
Pershing, Prediction of room temperature microstructure and mechanical properties in lamellar iron castings, AFS Trans. 94 (2000) 889-912

The main aim of this paper is determined of properties, especially granulometry, of recycled silicon carbide waste and its possibility of using in new cementitious recipes.
Particle size influences many properties of particulate materials and is a valuable indicator of quality and performance.
Materials Filler used for cement mixtures, accounts for 70 to 80% of the volume of mixtures, is for its quality one of the decisive factors.
Conclusion Each recycled material has its own specific properties even if it has the same mineral origin.
The characteristic of fillers can affect concrete at the physical and chemical levels.

The principle of AFM is simple relatively, but there are more factors affecting the quality of the AFM [3].
A J Fletcher studied the thermal characteristics and rheological properties of polymers applied in the AFM and thought that the rheology of the medium plays an important role to the effect of the AFM [4].
Studies on various parameters affect the wear properties of the material with the help of finite element method and neural networks have been attempted by some researchers [3,7,8].
Known by the polymer material properties, the abrasive medium viscosity decreases with the shear rate increases, so, the “shear thinning” must be taken into account during the simulation.
Wu: Mechanical Engineering & Automation. 5 (2006), p. 166–168 [5] V.K.

In practice, the most effective method at present is to assess material properties by performing various kinds of material tests on materials partially cut-out from existing structures [1].
In practice, though all design and standard specification require the definition of tensile properties for a material, these data are only partly indicative of inherent mechanical resistance to failure in service.
For this, the primary fracture parameter is the stress intensity factor, K.
[5] Iron and Steel Engineering Series, Vol. 3, Properties and Tests of Steel Materials (in Japanese), New edition, The Iron and Steel Institute of Japan, Chijin Shokan, Tokyo, Japan, 1977
Sumita, Relationship between nonmetallic inclusions and mechanical properties of steel (in Japanese), Iron and Steel 13 (1971) 1897-1911.

Mechanics Analysis of Asphalt Pavement with Crumb Rubber Modified Cement Stabilized Macadam Base Hong-mei Guo 1,2,a, Han Zhu 1,3,b 1School of Civil Engineering,Tianjin University,Tianjin 300072,China； 2Department of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China 3Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin, 300072, China aghmtj@126.com, bhanzhuaz@yahoo.com.cn (Corresponding Author) Keywords: crumber rubber; cement stabilized crushed stones base; mechanical properties; ANSYS; finite element analysis Abstract: Reuse of the waste tires in highway engineering is very important for reducing pollution, protecting environment and resources.
The reflection crack not only affect the road appearance and drive comfort, and the most important thing is that greatly shortens the service life of road surface.
Feng Qin tested shrinkage property and water stability of cement stabilized macadam base with crumb rubber, it is showed that crumb rubber can decrease the shrinkage of semi-rigid base and improve the anti-erosion property of cement stabilized macadam base [8, 9].
(5)Regardless of the dead weight The main purpose of the thesis is to obtain the effect of cement stabilized macadam base with crumb rubber on mechanical properties of asphalt pavement structure by changing the thickness and modulus of base, which is very important to study this pavement structure.
The analysis of road structure mechanics response The values and developing laws of tensile compressive and shear stress generated at the base of pavement under traffic loading, are very important to analyse load bearing capability and stiffness of surface and base.One of the major factor to surface deflection is vertical compressive stress.

As biomaterial, although has specific properties, SS 316L would like be improved to extend its biocompatibility, integration with bone tissue, and mechanical properties.
They could be related to microstructure like grain refinement and severe plastic deformation [9,10] or associated with mechanical properties like hardness or compressive residual stress [9-13].
The regular steel has been utilized generally for orthopedic implant because of its superb mechanical and hostile to corrosion resistance properties.
González-Carrasco, Superficial severe plastic deformation of 316 lvm stainless steel through grit blasting: effects on its microstructure and subsurface mechanical properties, Surf.
Ibáñez, Influence of the sandblasting on the subsurface microstructure of 316LVM stainless steel: Implications on the magnetic and mechanical properties, Mater.