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This is one of the most determining factors of the tool or equipment’s longevity.
The physical behaviour of the material i.e. anisotropic material and isotropic material is a factor affecting the engineering structure.
Materials which have same physical, mechanical, and electrical properties in all the directions are called Isotropic material and on the other hand if they have different properties in different directions then these types of materials are called anisotropic material.
It is concluded that there is very little impact of the above factors on stress.
The authors concluded that cylinder properties approach the properties of a metal base (it has a smaller modulus of elasticity) and radial strain changes from positive values to negative values and tangential strain increases in the positive direction as the value of n increases.

Nuraini1,c, Mohamad Ridzwan Ishak2, d 1Deparment of Mechanical and Manufacturing Engineering Department Universiti Putra Malysia 43400 UPM, Serdang Selangor, Malaysia 2 Departments of Aerospace Engineering, University Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia aalkbir74@yahoo.com ,bsapuan@upm.edu.my, cnuraini@upm.edu.my, dmohdridzwan@upm.edu.my Keywords: Hexagonal tube.
The failure modes depend on variety of factors associated with the properties of the fibers and matrix and conjointly the preparation of the fibers, furthermore on the geometry of the shell of composite tubes [7].
Several studies have been conducted to investigate the crashworthiness characteristic of natural fiber reinforcement polymer composite material as an energy absorption capability due to the good mechanical properties low cost , widely commercially availability and andbiodegradability.of this material[8,9,10,11].
The quasi-static axial crushing behavior of hexagonal composite tube in affected by their structure length. 2.

Other factors that donate for difficulty in machining this material are due to its high work-hardening tendency rates at machining strain rates which leads to high cutting forces, toughness, gumminess and strong tendency to weld to the tool and to form built up edge [4, 5].
The surface roughness of the work is considered as one of the most crucial factors for quality surface evaluation as it significantly can affect the work performance, durability and reliability [8].
In machining Inconel 718, the determination quality of its machined surface is generally contributed by various parameters such as cutting conditions, tool geometry and material properties [11].
Cutting conditions in coded factors and the surface roughness values obtained using TiN coated cemented carbide insert are presented in Table 3.
Journal of Mechanical Industrial Engineering, Vol. 2, Number 4, pp. 209-214, December 2008 [10] M.

Simulation of HVOF coating is extremely complex to analyze, since its properties and microstructure depend on numerous processing parameters.
The other properties for WC-Co are given in the table 1 below.
Table 1 Properties of WC-Co.
All other properties are kept same as before.
Another important factor is plastic strain within the particle.

By comparing with those of the conventional BT toolholder, the BTF toolholder has higher stiffness and outstanding connecting properties.
Generally, the toolholder–spindle connecting performance is affected by many factors, such as rotational speed, material, clamping force, magnitude of interference along the taper shank of the holder.
However, the clamping force is the critical factor for improving the BTF toolholder-spindle connecting performance due to its special structure.
The clamping force is the critical factor in effecting the two parameters.
Vol. 41-2 (1992),p. 637-643 [2] Song Zhang and Xing Ai: Mechanical Science and Technology.

This principle is commonly used up today in mass-production or prototyping of a product. [1,2] The cost of manufacturing moulds depends on a very large set of factors ranging from number of cavities, size of the parts (and therefore the mould), complexity of the pieces, expected tool longevity, surface finishes and many others.
So, the optimal setting of the production process is a crucial factor that affects the quality, cost and productivity of injection moulding. [3,4] Studied component for injection moulding was intended to serve as a stopper in the automotive spotlight and it should be made ​​from material Dyblend from German company Hoffmann + Voss.
(Fig. 8) Fig.8 3D model and real manufactured mould form Conclusions The cost of manufacturing moulds depends on a very large set of factors ranging from number of cavities, size of the parts (and therefore the mould), complexity of the pieces, expected tool longevity, surface finishes and many others.
Majernikova: Analysis of variance of mechanical properties of sheets as the input parameters for simulation of processes, In: Acta Metallurgica Slovaca, Vol.18, no.2-3 (2012), p. 109-116 [4] H.C.
Cillikova: Construction of manufacturing machines, current trends, Mechanical Engineering, Vol.12, No. 11 (2008), p. 8-9

The latter adversely results in a heat-affected zone (HAZ) formed around the laser-irradiated region.
The microstructures and properties of work material in the HAZ are basically different from their original, thus considering the HAZ as a thermal damage zone.
The changes of material properties as well as the formation of physical defects, e.g. cracks, in the HAZ are typically unacceptable for fine-scale manufacturing as the changes importantly alter the designated functionality of laser-fabricated components.
Furthermore, the use of higher laser pulse repetition rate and more number of laser pulses can promote a larger hole in the laser drilling of aluminum in water, while these factors provides less effect in the dry laser ablation [6].
Besides the energy density, the maximum width is subjected to the thermal properties of work material.

Therefore, the coupler casting process optimization should start from the origin to prevent the original crack caused by material and manufacturing factors as well as the crake caused by stress concentration due to casting defects.
With these measures, comprehensive mechanical properties of couplers, parts organization continuity, anti-fatigue and working life are expected to be improved and important practical significance in protecting the safety of trains on the railway will be witnessed.
The thermal property curve of the alloy is shown in fig.6.
Fig. 9 Shrinkage cavity and shrinkage porosity Fig.10 Solidification time The main factors that lead to shrinkage porosity and shrinkage cavity defects in the investment casting process are as follows.
Alloy shrinkage factors for the investment casting of 17-4PH stainless steel parts[J].Metallurgical and Materials Transactions B,2008,39(2):317-330

So super martensitic stainless steel 00Cr13Ni5Mo2 is developed and used successfully as down-hole string [3], originating from the satisfactory combination of excellent mechanical properties, availability at a low cost and high corrosion resistance [4].
As is well-known, the stability of the passive films is dependent mainly on the potential of the materials, and the pitting resistance of the materials is related directly to the nature of the passive films, which are affected by many factors.
Uhlig, Environmental factors affecting the critical potential for pitting in 18-8 stainless steel, J.

Introduction In semiconductor and display manufacturing process, particles with various sizes, components and shapes are generated by many kinds of factors.
When the particles are deposited on the wafer surface and not be controlled properly, it will adversely affect manufacturing process and cause yield drop.
Especially, as development of technique leads to line width and pitch size reduction of semiconductor, particles having diameter around tens of nanometer to several nanometers, which have not been identified as the cause of defects, also act as failure factor.
Specifically, wafer with known properties like particle size distribution or shape and size of deposited area.
The flow rate and distance between nozzle and wafer, and strength of electric field can be controlled and it will affect the particle deposition result such as number of deposited particle or size of deposition area.