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The mechanical properties of all the base metals of the welded component specimens of shipbuilding industries A and AH36 are shown in Table 1 and 2.
Table 1 Mechanical properties obtained from tensile tests (INHA Univ.2003) [MPa].
The local strain is an important factor affecting fatigue life.
Fig.6 shows the stress and strain concentration factors.
Also FE analysis of a welded joint has difficulty analyzing geometries or properties conditions, and the procedure is complicated.

Properties of Kenaf Filled Unplasticized Polyvinyl Chloride Composites Mohd Firdaus Abdrahman1, a and E.
Meanwhile, the addition of 30% fiber contents with PMPPIC was successful to enhance the tensile properties and the efficiency of PMPPIC was verified using Fourier Transform Infra-Red (FTIR) spectroscopy.
The challenge in the materials development of engineering thermoplastics composite is to get an excellent combination of properties and manufacturing process at a moderate cost.
Since mechanical properties are concerned, the main target is to focus on stiffness, strength and toughness.
Therefore, in this research where Kenaf is used as filler and PMPPIC as coupling agent (Fig. 1) in this composite to get a good combination of mechanical properties and manufacturing process, several factors that influence and affect the properties of the composites need to be considered.

The thermoelastic stress, mechanical properties and defect content of bulk 4H n-type SiC crystals were investigated following adjustments to the PVT growth cell configuration that led to a 40% increase in growth rate.
Shen, Nano-scale elastic-plastic properties and indentation-induced deformation of single crystal 4H-SiC, J.
Karim, Structural, elastic and electronic properties of 2H- and 4H-SiC, Int.
Pharr, Extraction of anisotropic mechanical properties from nanoindentation of SiC-6H single crystals, J.
Zu, A comparative study of the mechanical and thermal properties of defective ZrC, TiC and SiC, Sci.

Then three profit structure elements: sales volume, price and cost as well as their influencing factors are analyzed, and "profit-elements(-properties)-scheme" is created.
With this model, environment properties scheme is decided to verify its validity and operation simplicity.
Factors affecting price mainly include commodity value, money value and amount, supply-demand relations[11].
Case Study Profit-oriented decision making for schemes of different environmental properties.
Through the above-mentioned three factors, the scheme affects profit directly or indirectly and makes the total manufacturing system be evaluated through single objective, namely enterprise profit.

At this process condition, the alloy had an excellent comprehensive mechanical properties and conductivity property of the tensile strength, elongation, and electrical conductivity reaching 549MPa,15% ,and 82.34%IACS respectively.
In order to obtain better mechanical properties, cold working and heat treatment were both used for the alloy.
When the temperature is below 460℃，the precipitation particles is the main influencing factor, the hardness of alloy increase. when temperature is higher 460℃, recrystallization is the main influencing factor, the alloy hardness decrease.
However, the reason of different properties of four alloy aged at different temperature is reply recrystallization.
At this process condition, the alloy had an excellent comprehensive mechanical properties and conductivity propertyof the tensile strength, elongation，hardness and electrical conductivity reaching 549 MPa,15％,82.34%IACS and 215HBW respectively

Materials affect the performance of their applications, so conducting polymer/cellulose composites have grown fast recent years due to their better performances and new properties [1].
Tensile stress–strain curve of (1)BC, (2)BC/PANI(0.01M), (3)BC/PANI(0.20M), (4)BC/PANI(0.50M) Mechanical Properties.
The mechanical properties of the membranes get worse because PANI destroyed the three-dimensional network structure of BC.
Factors affecting the yield and properties of bacterial cellulose[J].
The structure and mechanical properties of sheets prepared from bacterial cellulose[J].

However, free carbon also reduced the mechanical properties of Vickers’ hardness and fracture toughness of the composites.
The goal is to determine the effect of compaction pressure during sintering to the resulting mechanical properties.
Table 1 shows the mechanical properties of the samples and relative density in dependence on the sintering temperature.
Liu, Mechanical properties of nanocrystalline TiC–ZrC solid solutions fabricated by spark plasma sintering.
Goller, Densification behavior and mechanical properties of spark plasma-sintered ZrC–TiC and ZrC–TiC–CNT composites.

It was found that the surfaces can be improved to achieve requisite properties, such as wettability and adhesion efficiency.
These findings showed that they can be used to improve the hydrophobic properties of the surfaces.
Therefore, the purpose of this study was to investigate the surface hardness, frictional and mechanical properties of three types of surface modified archwires; DLC-coated, CH4- and CF4-PBII NiTi archwires.
They did not detect a significant effect of PBIID techniques that affecting the load values under the displacements.
The three point bending test was used to evaluate the mechanical property of the wire in a laboratory setting.

The structures, mechanical properties, and optical properties of the composite films were detected by infrared spectroscopy, TG, DSC, XRD.
The results show that: Nano TiO2 fill added to the PVA matrix to improve the mechanical properties of PVA, thermal stability and UV shielding performance.
PVA film having abrasion resistance, tear resistance, and resistance to organic solvents, and antistatic properties, gas barrier properties, transparency, and good biodegradability, good biocompatibility, good electrochemical stability, good heat-sealing sexual performance [1].
The Nano TiO2 powder added to the matrix of the PVA film casting solution prepared by nano-TiO2 / PVA composite film, and the structure and mechanical properties of the composite films, optical properties, thermal properties, such as the characterization tests. 1 Experiment Preparation of Nano TiO2 powder Take a certain amount of Tetrabutoxide dissolved in anhydrous ethanol, adding acetic acid, to delay Tetrabutoxide strong hydrolysis.
Agglomeration impact on the mechanical properties of the composite film, thermal properties, and all affects the morphology of the composite material, there is a limit to its range of applications and therefore needs to be improved to reduce agglomeration. 3 Conclusions Nano-TiO2 was added to the PVA-based body, improving the mechanical properties of the PVA, thermal stability, and the ultraviolet-shielding performance.

Beyond all doubt once the system failure it will cause severe human and property losses, even lead to disastrous consequences.
Unfortunately, the working system which needs rapid detection, diagnosis and repair is often very complex and factors affecting the system functions characteristics are varied and influence each other, restrict each other and interact with each other.
Moreover, these vibrations in the state are related to the bearing characteristic and the real cause of these vibrations often is related to those factors (such as material, structure, assembling, fabricating and improper operation).
And its performance and affect decide directly the quality and performance of the whole machine.
The main reason for these faults my be inappropriate oil temperature, too high oil temperature, dirty oil or rotten oil, seal failure, heavy wear parts, damaged parts, manufacture or install errors, design flaws and Some other factors.