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To determine the stress intensity factor a numerical model was developed based on measured crack shapes, material properties and cyclic loading data of the actual tested specimen.
Sensors near the notch are affected with crack propagation in different way than sensor at the balk of the specimen.
Analysis results The experiment assumption was, that stress distribution is likely to be equal at the position of reference sensor (SG5), and mostly affected on position of strain gauges (SG1-SG4) behind notch.
However, it was necessary to prove it by numerical analysis of stress intensity factor (SIF) along the fatigue crack tip front which has been done.
This experimental research and investigation demonstrate capability of continuous flaw growth measurement during the operation on critical places of the mechanical construction.

There are many factors influencing the springback, such as process parameters, punch parameters and sheet parameters.
Therefore, it is great significant to study those factors for the springback law of TWBs.
The springback law of parallel and perpendicular to the weld of TWBs hyperboloid shallow shell affected by blank holder force, punch string height, the difference of blank thickness was researched.
Table 1 shows the mechanical properties of the material parameters.
Fig.1 FEL mesh model Fig.2 FEA model for tailor welded blank Fig.3 The drawing and trimming model for TWBs hyperboloid shallow shell Table 1 Mechanical properties of the material parameters Material young modulus / MPa poisson ratio yield strength / MPa hardening exponent coefficient of normal anisotropy R0 R45 R90 St14 207 0.30 160 0.22 1.88 1.22 2.17 Measurement of the springback displacements In order to study the springback of the hyperboloid shallow shell, the springback needs to be measured after drawing and trimming.

In this study, Fe foam with greater than 90% porosity, 2-mm pore size was successfully fabricated using a slurry coating process and the pore properties were characterized.
Various factors affecting pore size and the structure of Fe foam fabricated using the slurry coating process can be taken into consideration.
Table 1 Pore properties of Fe foam fabricated by slurry coating processes.
It can be inferred that this change in the strut microstructure will affect the mechanical properties of the Fe foam; thus, there are plans to conduct a mechanical property evaluation in the future.
Then, the resultant pore properties were analyzed.

Spider silks have excellent mechanical properties, which can even compare with some high-performance synthetic materials.
Although as reported, the impressive mechanical properties are closely related to the primary amino acid sequence, the conformation that molecular chains form is also an important determinant.
Introduction The study of spider silk has been focused in the polymer material area during the recent 20 years with its remarkable mechanical properties, expected to be utilized as the perfect material of bulletproof helmets, ballistic protective clothing and other industry supplies[1,2].
Besides the three factors, alkali metal ions also have an influence on the conformational transition which will be discussed in the further research.
Weber, et al, Silk properties determined by gland-specific expression of a spider fibroin gene family, Science 272(1996) 112-115

Bhd. with the chemical compositions and physical properties as depicted Table 2.
This indicates that sieved RCF was not jeopardize the hardened properties of ECC and this finding is contradicted to the previous research [14-16].
Oh and M.R.M Zain, Evaluation of the design mix proportion on mechanical properties of engineered cementitious composites.
Baum, Effect of high levels of fines content on concrete properties, ACI Mater J. 103 (6) (2006) 474-482
Yang, Macroscopic and microstructural properties of engineered cementitious composites incorporating recycled concrete fines.

In this research, four factors were comparatively analyzed so as to obtain the influence of them on ultimate axial tensile bearing capacity of steel-tubes.
These four factors are longitudinal reinforcement length rate, thickness, elastic modulusand circumferential reinforcement ways of CFRP sheets.
Stress/MPa Strain Strain Stress/MPa Fig. 1 Stress-strain Relationship of Steel Fig. 2 Stress-strain Relationship of CFRP Sheets Mechanical Mechanical Properties.
Table 1 and Table 2 below show material mechanical properties of steel and CFRP sheets in this paper.
Table 1 Material Mechanical Properties of Steel Yield Strength/MPa Elastic Modulus/GPa Tensile Strength/MPa Elongation/% 235 206 407.5 26 Table 2 Material Mechanical Properties of CFRP Sheets Tensile Elastic Modulus /GPa Tensile Strength /MPa Elongation/% 242 4223 1.72 Finite Element Models Table 3 shows the geometric parameters of steel tubes.

It has been found that the Nano-pore-throat takes more than 60 percent of the total pore-throat of the low permeability reservoir and it is the key factor affecting the flow capacity when the permeability is less than 0.5×10-3μm2.
And Micron-pore-throat is the key factor affecting the flow capacity of low permeability reservoir.
The nanoscale pore-throat takes more than 60 percent of the total pore-throat and microscale pore-throat takes less than 5 percent when the permeability is less than 0.5×10-3μm2, while the key factor affecting the flow capacity is sub-microscale pore-throat.
The key factor affecting the flow capacity is the sub-microscale pore-throat when the permeability is smaller than 0.5×10-3μm2, and that would be microscale pore-throat when the permeability is larger than 5×10-3μm2.
Micro-electro-mechanical-systems (MEMS) and Fluid Flows.

Generally, cracks are initiated in cementitious materials at the nanoscale [3], then grow into micro and macro cracks that negatively affect the mechanical and durability properties.
Besides the CNTs' physical properties' effect on the mechanical properties, some other essential factors and interactions must be studied.
Flow properties Flow properties like flow diameter, yield stress, and plastic viscosity indicate the cementitious composite's stability, constructability, and early-age characteristics, which affect the mechanical properties.
CNTs have mechanical, electrical, and thermal properties.
These cracks affect the durability and mechanical properties.

In this study, the mechanical properties of welded joints of AA 6005 aluminum alloy obtained with friction stir welding (FSW) and conventional metal inert gas welding (MIG) are studied.
Introduction The natural qualities of aluminium and its alloys are positive factors for designers, manufacturers and industrial users due to their unique mechanical, electrical, thermal, and recycling properties as lightness, corrosion resistance, etc.
In this context, and taking into account the series of disadvantages when traditional welding processes are applied to aluminum alloys, this work aims to compare the mechanical properties of FSW with conventional arc-welding method metal inert gas welding (MIG).
In contrast, the joint ductility (i.e. elongation at break) obtained by FSW shower lower properties when compared to the MIG welds.
A different structure was observed for FSW, in fact it is showed that the Thermo-Mechanical Affected Zone is characterized by recovered grains containing an high dislocation density, while in the stir zone, a very fine equiaxed grains occur due to the dynamic recrystallization [3, 4].

EFFECT OF EPOXIDIZED PALM OIL LOADING ON THE SWELLING AND MECHANICAL PROPERTIES OF SBR VULCANIZATES NURUL AYUNIE Mohd Zaki1, a, A.Z.
This study is conducted to investigate the effects of epoxidized palm oil on the mechanical properties of SBR vulcanizates especially in terms of their tensile behaviour.
Tensile properties were measured using Shimadzu Universal Testing Machine at speed of 500 mm/min.
Other factors that can affect the swelling index are length of network chain, temperature and types of solvents [9] .
Fig. 2 Graph of crosslink density (mol/g RH) and swelling index against EPO content Conclusion The presence of large amount of EPO in the rubber vulcanizates gives very clear effects on their physical properties especially for tensile properties.