Search results

Modular design of the seeker in 3D environment We can see from the first section that, as the core of the DDD, domain model is the key factor of the success of DDD.
Different types of seeker have certain requirements for its structure, thereby affecting the size and the weight of the seeker.
The interface consists of mechanical interfaces and electrical interfaces.
The task is to do simulation analysis on the assembly of the seeker and its corresponding parts and analysis their dynamic properties, electrical properties and optical properties, to see whether they met the indicator parameters required.
Based on the thought of MBD, we offer subsidiary information to the 3D model of the product through integrating the design process, design knowledge, data, method and other factors and embedding Autovue product of Oracle Corporation to the system to markup model and documentation.

The properties can be improved by special pre-coating paints [2].
Moreover, decorative finish aspects as color and structure and defined surface properties e.g. scratch resistance or anti-fingerprint properties are of increasing importance [3].
In order to determine the best ratio and composition for colored steel sheet, Table 1 was the seven factors mixed-level orthogonal testing.
Pigment binder ratio also had impact on the properties of adhesion and MEK-resistant.
The relatively high surface tension of the coating would affect the wetting of substrate, film properties, surface performance because the sheet metal was galvanized.

The abrasive resistance Study about The cutting Picker 40Cr of Coal Cutter Ning Zhanga, Shuchen Wangb, Na Shic, Hao Chend Jiangsu Key Laboratory of Large Engineering Equipment Detection and Control, School of Mechanical & Electrical Engineering, Xuzhou Institute of Technology, Xuzhou, 221018, China a sprningzn@126.com, b wsc1967@xzit.edu.cn, c 1446591887@qq.com, d 964697081@qq.com Keywords: shearer picks;40Cr; wear resistance Abstract.
The cutting pick is primarily used in footing excavation such as coal mining and roadway excavation, so the performance of cutting tooth directly affect the mining capacity, the driving efficiency, and the service life of the tool.
The low impact properties, poor wear resistance, and droping the alloy head are the the main reasons of tooth failure.
The friction factor compare of 1# to 3# samples was shown in Fig. 6, The wear coefficient stable values was respectively 0.53, 0.47, and 0.43.
Fig.6 Friction factor compare of 1# to 3# samples Analysis of grinding crack morphology.

With the development of measuring technology,the measuring accuracy of optical glass refractive index of the increasingly high demand,V prism refractometers is major general instrument for measuring the refractive index of optical glass,not only the simple device,convenient measurement,and this method has high precision performance,however,the accuracy is only attained ,which in the regulation of national metrology verification and the introduction of V prism refractometers in the literature,the classic formula calculation principle formula error caused by refractive index has more than .Based on the mechanical structure and optical transmission to improve the original V prism refractometers the refractive index of air,by considering the influence on measurement precision of V prism refractometer,to mathematical modeling of V prism refractometer the principle formula,V can be measured refractive prism refractometer rate accuracy increased to ,measurement repeatability less than ,has important
Intorduction In the manufacture of optical glass and measuring the refractive index of optical glass,its error directly affect the imaging quality from the optical system.Therefore,the high precision measurement of refractive index of optical glass rate is very necessary.The measurement of refractive index of optical glass rate can be divided into two categories,measuring method and interference method.
The original V prism refractometer mechanical structure and optical path was improved,with the measuring accuracy from the original to .Mathematical model of the original formula of the refractive index is Improved, and this change factor of the air refractive index Is added to the calculation formulas of the refraction index.New mathematical model is set up,which improves the measurement accuracy of V prism refractometer to [1,2]. 1 Measuring method and system composition System composition diagram of high precision automatic V prism refractometer is as shown in figure 1.
The emergent light is deflection 90° by pentaprism.The pentaprism has unique optical properties,so the light is deflected angle of 90° by secondary reflection.And then the image is deflective and vertical.No effect on reflected light 90° reflection is brought with prism position slight movement,and that light of the instrument path can be shorten.
According to the Bessel formula, repetitiveness can be obtained by repeated single measurement by residual error: (16) is the i measurements,and is an average value of 10 measurements in the formula (16). 3 Conclusion This system improves the mechanical structure and the optical transmission of the original V prism refractometer.Considering impact of the air refractive index on the measurement accuracy of V prism refractometer,new mathematical is modeled to the principle formula about V prism refractometer.

Cotton and bast fiber image segmentation based on mathematical morphology Ying Zhang1,a, Shengfei Zhou 2,b, Zuzheng Lin1,c 1 Department of Mechanical Engineering, Lushan College of Guangxi University of Technology, Liuzhou, Guangxi, 545616, China 2 School of Mechanical Engineering, Hubei University of Technology, Wuhan, Hubei, 430068, China aguyi309@163.com, bwwwzhoushengfei@163.com, cfengxiang886@163.com Keywords: Fiber detection; Image segmentation; Mathematical Morphology Abstract: Traditional cotton and bast fiber detection using artificial methods.
Image segmentation algorithm is based on one of the two properties of gray: discontinuity and similarity.
The reconstructed image can remove some small noise while does not affect the object’s whole shape.
Choosing the structure element is the key factor in the morphological operation, the shape and size of structure element will affect the image operate effect.

This feature together with good matching of thermo-mechanical parameters of ТiВx and GаN, as well as excellent barrier properties of the borides with respect to the gold, provides considerable enhancement of operating temperature comparing to conventional contact systems based on polycrystalline barrier layers [11].
At the same time conventional contact systems are strongly affected on RTA, which causes degradation of the layer structure and destroys it.
It is seen from Fig.2 (obtained before the Au deposition) that the atom depth profiles were not significantly affected by RTA.
It should be noted that surface in the annealed samples became even more uniform which could be explained by relaxation of mechanical stress in the film after RTA.
RTA did not cause changes in Schottky barrier's parameters: the barrier height (0.8 eV) and ideality factor (1.1) measured before and after RTA were nearly the same.

However, it provides a material with lower mechanical properties compared to static culture.
Production of BC by stirred medium form spheres whose mechanical properties are lower when compared to properties of membranes produced in a static environment.
The BC has some limitations regarding their properties.
The primary purpose of the addition of reinforcing materials is the modification of the original properties of BC, for instance, the increase in mechanical properties.
Vogler, Factors Impacting the Formation of Sphere-Like Bacterial Cellulose, Biomacromolecules, 14 (10) (2013) 3444-3452

Thermo-physical properties equations are proposed for the estimation of thermal conductivity and viscosity of water based nanofluids [2].
The properties of nanoparticles are given in Table 1 respectively according to the manufacturer’s specification.
Table 1: Al2O3 nanoparticles properties according to Sigma-Aldrich USA Properties Alumina Oxide (Al2O3) Density [kg/m3] 4000 Melting point/freezing point Melting point/range: 2.040 °C Initial boiling point and boiling range 2.980 °C pH value 9.4 – 10.1 at 20 °C Al2O3 in EG based is prepared using two-step method by using nanoparticles in powder form and later dispersed in the selected base fluid [10].
The mass of Al2O3 were calculated using Eq. 1 with nanoparticles properties from Table 1
Zilio, Experimental measurement of thermophysical properties of oxide–water nano-fluids down to ice-point, Experimental Thermal and Fluid Science. 35 (2011) 1313-1324

Gel of aloe vera also exhibits good wound healing properties [3].
Tensile strength and elasticity: Mechanical properties were performed on a tensile testing machine (Narin Instument, Thailand, equipped with the software version 3.9) with a crosshead speed controlled at 10 mm/minute and a 100 kg loaded cell [5].
The physical properties of these films were shown in Table 1.
All film formulas exhibited good film properties at initial time.
These films exhibited the good properties in strength, elasticity, adhesiveness and hydrophilicity properties.

There has been some research on the instability mechanism of trench wall and factors that influence trench stability.
Scholars researched the influence of the slurry property, soil condition, underground water, additional ground load, trench shape and size et al[2-5].
To be precise, the technique factor means the impact of slurry flow on the trench wall caused by the grab’s moving up and down in slurry.
Addition to the overload, the mechanical vibration is inevitable.
It may change the soil properties and lead to large deformation and further endanger the stability of the slurry-trench.