Search results

In this study, the effect of infill density, layer thickness and extrusion temperature on mechanical properties of polylactic acid (PLA) part manufactured using fused deposition modelling process was investigated to obtain optimum process parameters to achieve the best properties.
Rahmati and Vahabli [11] identified the tessellation of the digitalised model and slicing procedure as most influencing factors affecting surface roughness of built parts in FDM process and developed models to improve the surface quality by reducing the staircase effects.
Taguchi design was employed to plan the experiment and grey relational analysis in combination with principal component analysis for factor weight determination was adopted to determine the unified FDM process factors that optimised all the considered mechanical properties at once.
Table 1 Physical and Mechanical properties of PLA plastics [18] Property (unit) Value Density (g/cm3) 1.21 – 1.25 Melting temperature (oC) 150 – 165 Tensile strength (MPa) 21 – 60 Hardness (HR) 88 Process factors and experimental design.
In this study, the filament extrusion temperature, infill density and layer thickness were selected to observe their influence on the mechanical properties of FDM fabricated parts while other process factors were kept constant.

Influence of Wear Properties on Fretting Fatigue Life of a CK45 Alloy and the Al7175 Alloy M.
It is dependent on both the fatigue and the wear properties of the materials.
Several factors act at the same time and it is not an easy task to establish correlations between them.
The mechanical properties and the approximate grain size of the materials used are given in Table 1 Table 1 Mechanical properties and the approximate grain size of the materials.
The stress concentration factors were obtained by finite element simulation using CosmosWorks, adaption a 2D semi-elliptical surface scar.

According to the theoretical calculating formula of ground bearing capacity in the soil mechanics theory, analyze the major influential factors of building ground bearing capacity in subsidence areas, and they are internal friction angle, cohesive, and foundation base buried depth, especially physical and mechanical properties of soil.
Analysis Factors of the Foundation Stability Many factors affect the stability of the foundation, the main one is the size and nature of the building loads, type and space rock, soil distribution, groundwater conditions, as well as geological disasters and so on.
Fig.1 shows the analysis factors of the foundation stability.
In particular, its mechanical properties such as tensile strength, compressive strength, modulus of elasticity are a major factor in the destruction of the rock to resist deformation.
Depth factors for undrained bearing capacity.

The freezing temperature and freeze-thaw cycle times affected the mechanical properties of gels.
Results The effect of freezing temperature on the mechanical properties on gels The mechanical properties of PVA-OaPOSS hydrogels polymerized at different freezing temperature were shown in Fig. 2.
Fig. 4 shows the effect of freeze-thaw cycle times on the mechanical properties on gels.
Considering the economic factor, five times freeze-thaw cycle is property for the preparation of gels.
The freezing temperature and freeze-thaw cycle times affected the mechanical properties of gels.

Hardfacing is one of the efforts that can be made to improve the mechanical properties and wear resistance of materials that allow them to be used in all conditions.
Some of the problems found in ship companies, especially on ship hulls, are a decrease in mechanical properties and wear due to external factors such as damage to the hull due to waves.
This research was conducted to determine the amount of mechanical properties produced in welding using the hardfacing process.
This research can produce materials that can be used in companies as new materials with high mechanical properties.
In addition, hardfacing, in which the base metal is covered using another metal to obtain a surface with different properties and dimensions, is usually applied to improve metal surface parameters such as surfaces with improved mechanical properties [3].

Bone strength is affected by several intrinsic factors, such as, bone geometry/architecture, bone density, age, sex and disease [2, 4, 5].
The geometry and the dimensions of bone specimens were found to influence the mechanical properties of bone [10].
We found that, an alteration in the aspect ratios gave rise to changes in the mechanical properties around 10%.
Li, R.M Aspden, Composition and mechanical properties of cancellous bone from the femoral head of patients with osteoporosis or osteoarthritis.
Taddei, Mathematical relationships between bone density and mechanical properties: A literature review.

However, their mechanical properties are not good.
In general, PM aluminum matrix composites (AMCs) have good mechanical properties, being an inexpensive process.
Optimal properties require 36 h of high-energy milling.
Al+20% Fe/B can be sintered from 600 to 1100 ºC, without significantly affecting mechanical resistance or dimensional changes.
Microstructure and mechanical properties sintered Fe-Mo-B steels, Proceedings of Powder Metallurgy World Congress, EPMA, Shrewsbury, 1998, pp. 638

Keywords: SiNO fiber; precursor infiltration and pyrolysis; wave-transparent composites; pyrolysis temperature; mechanical properties; dielectric properties Abstract.
The effect of pyrolysis temperature on the densification behavior, microstructures, mechanical properties and dielectric properties of the composites was investigated.
Hence, it is the two contrary factors above that determine the final mechanical property of composites [13].
Generally, the mechanical properties of the composites are determined by the combination of retained fiber strength, matrix properties and the behavior of the fibre/matrix interface.
Hupa, Factors affecting crystallization of bioactive glasses, J.

., Chongqing, 400045, China ayyzhanglf@163.com, b2317709133@qq.com, c1281443469@qq.com, d*yyyueyu@sina.com Keywords: Alkali-activated slag, carbonation, influencing factors, mechanisms, test method, properties Abstract.
The Effect of Carbonation on the Performance of AASC Concrete Mechanical properties.
(1) The anti-carbonation performance of AASC concrete is affected by some factors such as the type of activator, alkali concentration, slag composition and admixtures etc.
An assessment on parameters affecting the carbonation of alkali-activated slag concrete, J.
Ruíz, Mechanical properties and absorption of chlorides in alkali activated slag concrete and exposed to carbonation, Rev.

The microstructure and mechanical properties as a function of sintering temperature were investigated.
The experiment results indicate that the samples with a range of grain size from 300nm to700nm have high mechanical properties.
While, the mechanical properties are important for the ceramic tools.
The microstructure and mechanical properties as a function of sintering temperature have been investigated.
The porosity is one of the main defects which affect the material properties.