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Cyclic and static fatigue tests were performed with various loads (both sub- and over-critical) and number of cycles, and different fractographies were produced.
The average grain size was measured by image analyzer, with the average ferret method, to be of approx. 1.9±0.7 µm for the A layer and 1.1±0.8 µm for the monolithic alumina.
For all the loads, tests were performed for different numbers of cycles, respectively N=10 3, 10 4, 10 5.
In the cyclic case, the rupture, displacement, and detachment of many grains may imply a mechanical degradation of those mechanisms, that is, the presence of a mechanical fatigue effect.
It can be noticed that the latter presents the grain slidings and rotations typical of mechanical fatigue induced crack growth.

A fatigue crack propagation rate (da/dN) analysis was conducted using pairs of data comprising cycle number (N, in cycle) and crack length (a, in mm).
There is a significant difference in the number of cycles in the AISI 4140 steel after the annealing and multi-austempering heat treatments.
Transgranular fracture occurs as a result of cracks propagating through the grain.
For the annealed CT specimen, as shown in Fig. 6a, secondary crack propagates predominantly at the grain boundary between ferrite matrix and hard lamellar Fe3C precipitates.
Misra, Improvement of strength-toughness combination in austempered low carbon bainitic steel: The key role of refining prior austenite grain size, Journal of Alloys and Compounds, 710 (2017) 702-710

The specimen is prepared by the following steps: the first to estimate the number of specimens can be produced in one hour, then by the infiltration of the quantity according to the number of soil ,cement and pumice to fully mix in three layer loading strike sampler,must compact every layer,finally strike the sample in strike sampler on both ends of the leveling, take out the sample, the serial number on each sample, then put in the concrete standard curing box maintenance to age, curing temperature 20 + 2 ˚C, humidity control at 95%.
Main accessories for: energy disperse spectroscopy of EMAX product by HORIBA company. 2.3 test method In order to verify , the scanning electron microscopy test designed two sets of tests, testing a set of different pumice powder mixed, another set of different curing period test.Preparation of test sample see table 4: Tab.4 Test plan of SEM Group number Sample number cement content[%] pumice powder content [%] Curing period[d] 1 1.1 16 0 28 1.2 8 1.3 16 2 2.1 16 0 60 2.2 8 2.3 16 The test results and analysis 3.1 The microstructure characteristics and mechanism analysis of different pumice powder content cement-soil (1) the microstructure morphology of sample 1.1,1.2and1.3 are shown in Fig.3, magnification of 5000and3000 .
sample 1.1 magnification of 5000 sample 1.1 magnification of 3000 sample 1.2 magnification of 5000 sample 1.2 magnification of 3000 sample 1.3 magnification of 5000 sample 1.3 magnification of 3000 Fig.3 SEM scan picture The SEM photos of figure 3 show that: while curing period is 28 days, there are a large number of cement hydration generates, such as hydration of layered, laminated, flowers of a variety of different forms.
So it's felting strength is increased and the properties of cement composite soil is improved. the test results show that when the cement content of 16% , the best dosage of pumice powder is 8%. the skeleton particles shapes of cement composite soil are grain, fold polymers, felting particles and debris, portland hydration property fills in the big holes between particles surface and fold polymers, and fibrous material of cementation between particles intertwined, make cementation higher.
Thus, with growth of curing period,the structure of soil-cement is more and more dense.At the time of 60 days of age,cementitious materials appear are clearly visible under magnification of 5000 times, and microstructure of cement-soil compacted. soil particles in the cement-soil compound surrounded by a mass of cementitious material, soil granular structure is more compact.Hydration is very clear, and can be seen overlapping one another or hydrates are clustered, making soil grains cemented together in tight.Hydrates reduce the large crystals, lots of fibrous, flaky, needle-like C-S-H generated space mesh each other lap, making the soil grains cemented further strengthened, pore volume declined significantly, more uniform pore distribution and make cement-soil structure is more compact. 4.2 The hardening and the consolidation of pumice cement hydrated crystalline compounds.

Fiberboard with PVC coated plastic research Wang juwei (Beihua University, Jilin, 1320132) Key words: Acryl ate; acryl ate modified vinyl acetate adhesives; holding viscous energy; 180 ° peel strength; Abstract: PVC film facing material has the real wood grain feeling, high wear resistance strength, soft gloss and widely used in wooden furniture surface decoration [1].
The amount of emulsifier for emulsion polymerization: the size of the amount of emulsifier micelles only related to the number, but also directly affect the particle size emulsion with latex viscosity.
With the increase in the amount of emulsifier system, increase in the number of micelles formed, initiation and response speed, small size, specific surface area of the particles increases, the interaction force between the particles increases, the particle flow resistance generated is large, resulting in viscosity rises rapidly; the small amount of emulsifier, emulsifier concentration is reduced, reducing the number of plastic speed, leading to a large increase in grain size particle generation, the stability of the system deteriorates.
Results of orthogonal test number PVAF(g) SLS(g) BA:VAC 180°Peel strength 1 1 0.27 1:9 1.036 2 3 0.36 1:9 1.56 3 2 0.45 1:9 1.884 4 3 0.27 2:8 1.326 5 2 0.36 2:8 1.71 6 1 0.45 2:8 2.014 7 2 0.27 3:7 1.602 8 1 0.36 3:7 1.82 9 3 0.45 3:7 2.252 T1 3.946 4.87 4.48 T2 5.09 5.138 5.05 T3 6.15 5.196 5.674 1.315 1.622 1.493 1.697 1.713 1.683 2.05 1.732 1.891 R 0.735 0.077 0.398 9 sets of data from the table can be seen that the quality of PVAF 3g, butyl acrylate and ethyl acetate ratio 30:70, SLS 0.45g when the mass of butyl acrylate, vinyl acetate adhesive peel strength of up to 180 ° 2.252N / m, glue the best quality. 4 Conclusion After the film print, pattern, and after molding after good decorative effect, while making the film easy to adapt to continuous, automated production, price comparison cheap, film has become the main decorative wood-based materials.

N is the total number of the calibration set and the test set.
C is a continuous number obtained after Da is adjusted.
The number of generations got by GA was 100.
The number of the generation was shown in Fig. 2.
E,“Extraction of protein from distiller’s grain.”

So a method is raised to reduce the number of the anchors.
As the number of anchors increases, the average localization error of unknown nodes decreases.
The decreasing curve tends to become smooth when the number of anchors is over 160.
Fig. 5 Impact of anchor number Fig. 6 Impact of radius Fig. 6 shows the position estimation accuracy of RFRL algorithm as a function of R when the number of anchors is chosen 160 by considering the ratio of successfully localized nodes, δ= 0.05R.
Strivastava, “Dynamic Fine- Grained Localization in Ad-Hoc Networks of Sensors,” Proc.

Considerable grain growth has been observed at 1300 ºC for Mn-doped BCP samples compared to the pure BCP. 15 mol% Mn showed the maximum hardness value of 6.66 GPa at 1400 ºC compared to pure BCP of only 2.89 GPa.
Introduction A great number of studies have been undertaken to improve the mechanical properties of sintered HA.
It is well known that densification of ceramics in a solid state sintering is accomplished by a diffusion process via matter transfer from grain boundaries between particles.
It can be inferred therefore that, in the present work, Mn doping has substantially enhanced grain boundary diffusion between BCP particles leading to denser BCP ceramic bodies.

Modelling of Microstructure In terms of grain growing theory, the grain structure in polycrystalline materials can be simulated by a 2D Voronoi tessellation.
Fig.1 Voronoi tessellation with 142 cells Fig.2 the grains and the initiated short cracks Finite Element Analysis for Short Fatigue Cracks The strain range may be obtained by enforcing the cyclic loading conditions into the numerical simulation with the application of FEM.
A number of contact elements between each or potential contact surface nodal pair are assumed to exist in the contact portions of the boundaries in FEM as shown in Fig.3 b). n and t are denoted the normal direction and tangential direction of the contact point, respectively.

Because of the fast heating and fast cooling in the course of laser surface alloying, crystal grain has no enough time to grow , and crystal grain is very small[4].
Microstructure of heat-affected zone) a white zonal between layer allying zone and heat-affected zone is showed in Fig.1 (d), it is seen that a number of fine needle-like crystal grain embedded in the heat affected zone.

The polygonal faults are widely developed in fine-grained sediments that have typically undergone passive subsidence in passive margin basins and in some intracratonic basins.
From the interpretation of coherence slices, T11 faults is subdivided into 2 different groups based on their orientation, a large number of orientations being EW orientation, a second orientation being NNE and NNW (Fig. 1), The faults have lengths of 150–3000 m, throws of 5–10 m , NNE and NNW strike orientations coincide with the main T2 faults strike, it suggests these are influenced by T2 faults, they are also tectonic faults, however, EW strike-oriented layer-bound T11 faults mostly do not inherited with T2 faults(Fig. 2), they are non-tectonic origin.
[2] J.A.Cartwright: Diagenetically induced shear failure of fine-grained sediments and the development of polygonal fault systems.Marine and Petroleum Geology.Vol.28(2011), p.1-18
Polygonal fault networks in fine-grained sediments – an alternative to the syneresis mechanism.