Search results

The surface morphologies in the coatings affect the particles size and hardness property.
Alloying with Ni and Fe enhances the properties of Co coatings.
Systematic studies of pure Co (cobalt), binary (Co-Fe) and ternary (Co-Ni-Fe) coatings alloys relating to their mechanical properties with coating composition, particle size, morphology and the corresponding crystal structure were investigated in this research.
Characteristics and mechanical property.
Another important factor affecting the behavior of the microhardness of the coating may be attributed to the particle size effect.

In this work, the effect of heat treatment on the mechanical properties of self-compacting concrete (SCC) was examined.
Mechanical properties tests The mechanical properties of the SCCs were determined by testing cylinders (16x32)cm3 specimens under uniaxial compression and prism samples (10x10x40) cm3 under 3 point flexural according to NF EN 12390-3 and NF EN 12390-5 standard respectively, using an hydraulic testing machine with a capacity of 2000kN (Fig. 3).
In summary, the flow properties of SCC depend heavily on the addition particle size, shape, surface morphology and internal porosity in addition to factors such as mixing regimen, sequence of admixture addition and water/SP content [17, 18].
Fresh Properties of self-compacting concretes.
Ramezanianpour, K.Esmaeili, Mechanical properties of self-compacting concrete exposed to initial steam curing, The Fourth International fib Congress., Volume 1,.

Based on the studies, the performance of RCA concrete is largely attributed to two key factors: properties of RCA and concrete mix design.
Properties of RCA.
However, the increase in cement content can affect the properties of the hardened concrete such as shrinkage [8,9].
The loss of slump is attributed to many factors such as evaporation of mixing water, condition of aggregates, hydration process as well as climate.
AbouRizk, The properties of recycled concrete – Factors affecting strength and workability, Concrete International, 19-7 (July 1997) 56-60

The key factors of synthesis experiment involving the carbon source, the catalyst and high temperature heat source.
Compared with metal materials, carbon fiber has the characteristics of high strength, high modulus, low density and low coefficient of linear expansion on the physical properties.
Although carbon nanofiber is a new member in the family of carbon materials, it has the excellent properties and has wide application prospects.
But the analysis of main affecting factors can reveal the formation and growth mechanism of carbon nanofiber in the flame.
The key factors of synthesis experiment for carbon nanofibers involving the carbon source, the catalyst and high temperature heat source.

Plastic moulded parts should have good mechanical properties and free from defects.
Table 1: Experimental Factor Level Parameter Pressure [MPa] Injection temp.
Other factor that affects the weld line strength includes the presence of fillers and reinforcement.In injection molding process the packing time follows the fill time.
Material properties of ABS that obtained high impact resistance and strength when injection moulding process at low temperature also affected the weld line tensile strength results but had much less effect as compare with parameters condition.
This approach is suggested to be able to be tailored to various products and materials for injection moulding for both the optimization of production and structural properties of injection moulded parts.

Processes to produce these composites and studies on their mechanical properties have gained popularity [1].
In addition, the sporting goods industry has also been in the forefront of this type of material development, capitalizing on the materials' high specific properties [2].
As is well known, processing efficiency is an important factor that affects batch production of parts.
Taguchi's DOE parameter design techniques are used to determine which of controllable factors and which noise factors are the significant variables.
The aim is to set the controllable factors at those levels that will result in a product or process being robust with respect to the noise factors.

Chemical, structural and some mechanical properties were investigated.
Blending of PLA has been widely adopted to enhance PLA mechanical properties.
An approach which was implemented to enhance the mechanical properties of PLA was via the incorporation of inorganic/organic fillers.
Besides being used as reinforcement to improve mechanical properties, Parquetina nigrescens pods have phytochemicals which can enhance the antibacterial properties of the PLA. 2.
Mechanical properties of a material are determined through mechanical characterisation, and these mechanical properties determine the various applications of materials.

The main factors which determine this status are the limited tool life, high generated cutting forces (torque) and the high temperature in cutting zone caused by low thermal conductivity as well as chemical reactivity with the cutting tool.
Besides cutting conditions, the tool and the cutting edge geometry significantly affect the value of torque.
Among many titanium alloys, Ti6Al4V is extensively used mainly in aerospace applications due to its favourable mechanical properties.
Most significant effect from investigated factors on measured response Mz has the feed parameter (variable).
Fig. 3 Influence of investigated process factors on Mz torque By regression and correlation analysis, the mathematical model to calculate torque Mz by investigated process factors is as follows: (1) Surface response obtained from multi – level factorial experiment is shown in Fig. 4.

Even there are many studies about microstructure and mechanical properties of raw Inconel 718 material, effects of welding process to these properties have rarely been examined.
One of the major problems in post-welding properties of nickel based alloys is embrittlement.
Precipitation of γ′′ and coarsening of NbC phases in interdendritic regions of welded specimens are main factors of this decrease.
Average impact resistances of specimens Thereby, both γ′′→δ transformation and interdendritic precipitation and coarsening of this phase were included to fracture mechanism, decrease in the properties of welded specimens was higher. δ phase is in the form of needle-like or lamellar particles and accelerates the decrease in mechanical properties by creating a secondary notch effect [3-5].
Dislocations due to instant application of impact load and deformation hardening due to plastic strain are main factors of the fluctuation in hardness values of non-welded specimens [9-10].

The existence of warpage not only affects the appearance of plastic products, but also affect its mechanical properties and ultimately seriously affect the life of the product[1].
The warpage generation, like many other factors, such as the melt temperature, mold temperature, injection time ,gate location and etc.
How to balance these factors to eliminate or reduce the warping deformation, more and more by manufacture and academic concerns.
The results of research by domestic and international shows that many factors affect the warpage, which Moldflow flow analysis obtained after the temperature field, shear stress field uniformity and other factors on warpage have major impact[12].
Mechanical & Electrical Engineering Magazine, Vol. 24 (2007), p. 5-8 [8] G.