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The HAZ of AISI 316L SS and the AISI 316L SS itself consisted of polygonal austenite grains with many annealing twins and ferrite phase with a volume of approximately 2%, as shown in Figs. 2(e) and 2(f), respectively.
Fig. 3 shows the crack length versus number of fatigue cycles in SA 508 Cl.3, AISI 316L SS and the weldment.
The cracks grew rapidly in the order of SA 508 Cl.3, AISI 316L SS and the weldment after the same number of cycles.
Crack length vs. number of cycles in individual materials.

In circulation shearing process the saturated sand of which density is medium and comparative close-grained easily cause intermittent liquefaction and limited flow deformation phenomena which be proof exist in Seed of saturated dense sand consolidated undrained circulation tri-axial test and same time with cycling times than circular shear stresses mutual relations is given When the initial liquefaction.
In isotropical circumstances, destruction owing to liquefaction is defined to initial liquefaction, in other words excess pore water pressure equivalent to effective constraint confining pressure videlicet uf =σ3. uf is pore water pressure in accord with number of vibration for liquefacient destruction on anisotropic consolidation when double amplitude of axial strain to outstrip 10%.The abscissa of number of vibration for destruct circle-dynamic shearing stress curve is viberating frequency, and the ordinate is the maximum cyclic shear stress ratio, also is break curve of liquidized strength for mealy sand as show in Fig.3.
As the needs of the working for seismiczonation considering earthquake magnitude is 7, 8, cyclic liquefaction resistance adopt that equivalent vibe rating frequency is 12,20 correspondingly dynamic shear stress ratio of liquefaction, with the parameters of liquefaction resistance that are show in Table 2 Table 2 Liquefaction stress ratio to silty sand in different earthquake resistance level earthquake scale 6.5 7.0 7.5 8.0 the number of cycles 8 12 20 30 1.0 0.259 0.242 0.227 0.213 1.5 0.287 0.281 0.271 0.266 2.0 0.360 0.351 0.339 0.331 Fig.3 Relation curves of liquefaction cyclic stress ratios -cycles of load to silty sand Conclusions The results show that the dynamic modulus of foundation soil reduces nonlinearly with the accretion of dynamic strain, but increases with consolidation ratio, and affected little

Introduction With the development of many rock engineering, such as tunnels and underground caverns, the fracture or failure of rock has been the subject of extensive researches in an excavation disturbed or damaged zone (EDZ) around rock underground opening, the results of which have led to a number of comprehensive study (Cai, 2004; Chang, 2002, 2004; Chen and Liu, 2004).
In laboratory samples of low porosity, propagation of cracks across multiple grains often occurs only after crack interaction has occurred and is often driven by macroscopic shearing and dilation.
During the stage, the number of AE events mainly depends on the number of the damage zone.

In recent years, BaTiO3 doped rare-earth elements were reported in a large number of literatures.
At present, we have already from different preparation methods for research about La2O3-doped BaTiO3 of the electrical and mechanical property, the most popular methods for preparing BaTiO3 nanoparticles are liquid phase methods, such as hydrothermal method and sol–gel method [5,6,7].Sol–gel method was used to prepared the BaTiO3 base in this experiment and intergranular barrier layers at the grain boundaries govern the electrical properties in BaTiO3-based ceramics [8].
With the content of La2O3 increased, the numbers of the domain in barium titanate ceramic and electric dipole on orientation consistent are enhanced[9,10,11,12].
With the number of the La3+ increasing, and the crystal size decreasing, so the specific surface area is improved.

Table 1 is the sample serial number.
When grain size is about 10 nm, the effect of remanence increase is notable, so the magnetic loss can be increased, and it is better to improve absorbing properties.
Table 1 Serial number of samples Sample serial number Absorbent name Sample 1 Magnetic fly-ash hollow cenosphere Sample 2 FeNdO3 Sample 3 Magnetic fly-ash hollow cenosphere (had not been pre-treated)+ FeNdO3 Sample 4 Magnetic fly-ash hollow cenosphere (had been pre-treated) + FeNdO3 Fig. 5 Relationship of absorbing effectiveness and frequency on samples.

Microscopic characteristics of the inner layer were the dense dislocations and the refinement grains [6].
As the rules of the number> in the , the number of the least observation values was five.
In this testing, the number of the specimens which were not processed by laser shock was three, so the unilateral tolerance factor method does not work.

It is suitable for grain edulcoration and grading because of its simple structure, reliable work and adjustable vibrating direction and amplitude of exciting force[1-2].
In order to reduce the number of cells and improve the efficiency of the operation, simplification based on the three-dimensional model can be made as follows: because the vibrating screen is symmetrical in structure, the force and installation form are also symmetrical, so half of the model can be used to analyze; bolts and other standard connectors can be removed; regard the welding assemblies as a whole by removing welds; the bolt holes, fillets and other details that have little effect on the analysis should be ignored; remove the discharge port, feed inlet and the supporting device, define the spring like “connector”.
Summary (1) Established the finite element model by using SolidWorks, and by simplifying the model reduced the number of elements and nodes of the model, shortened the time of computation; (2) Finite element analysis in Simulation can reduce the number of test machine effectively, shorten product development cycles and reduce development costs; (3) The static analysis for vibrating screen provides a theoretical basis for optimizing design with stress and displacement clouds figures; (4) The results of modal analysis showed that the structure will not resonate because of the operating frequency far away from natural frequency.

Jie Zhong[4] studied the sol-gel synthesis of mesoporous TiC microspheres, grain prepared with 267m2/g surface area and the size is 30-50nm.
From the figure of TG, at about 60℃, with the evaporation of water and ethanol molecules, there starts weight loss, but weight loss is not obvious, at about 356.1℃, due to the volatilization of large number of organic molecules, weight loss rate of the sample is accelerated, the mass change was -23.03%.
With the increase of the calcination temperature, the large number of organic compounds volatiled, at about 60℃, water molecules and ethanol molecules begin volatiled, at about 356.1℃, due to the large number of organic molecules volatiled, Si-OH transformed to -Si-O-Si-.

Accordingly, the main scope of this paper is to highlight the enhancement of a number of properties of magnesium through the use of nano-length scale, amorphous and hollow reinforcements.
DMD is similar to spray processing but involves lower impinging gas pressure to disintegrate the melt as it enters the mold producing bulk material with finer grain size and better mechanical properties.
The improvement in ductility observed for ceramic reinforcements may be due to reduction in grain size, the activation of non-basal slip systems and texture modification for uniformly distributed nano reinforcements.

By means of further investigations on the process interfaces, it will be possible to optimize the interaction of the whole LPBF process chain to increase the number of qualified materials with better performance properties.
This leads to high cooling rates by self-quenching and thus fine grain structures.
Some microsections of the as printed cubic samples are etched with V2A etchant to have a look at the grain structure.