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Online since: October 2013
Authors: Jian Min Ju
It is not clear that the factors affect Load-carrying properties of the body structure.
This method to scan the body structure by a computer calculation and analysis, the geometry, mechanical properties of parameters of the body cross-section has been plotted map.
But this generally requires a lot of work, meanwhile, designers only can see the final result, so that they can not understand the factors influencing the Load-carrying property of the body structure.
The body cross-section parameter obtained can be used to not only know the basic properties of the body but also calculate and analyze the vehicle running performance.
The Basic Properties of the Vehicle Body If it is considered as an elastic body, the deformation and dynamic response of the body should depend on the basic property under the condition of external interference.
Online since: August 2014
Authors: Hong Bo Zhang, Chun Hui Su, Xiang Yu Zou, Qin Lei Wei
Preparation and Optical Properties of Er3+-Yb3+ Co-doped ZnO-B2O3- SiO2 -TiO2Transparent Glass-Ceramics Qinlei Wei 1,a, Xiangyu Zou 1,b, Hongbo Zhang *1,c, Chunhui Su *1,2 1 College of Chemical and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P.R.China 2 Changchun Normal University, Changchun 130032, P.R.China amql861112@126.com, bzxyisme@sohu.coml, czhb5388460@126.com Keywords: ZnO-B2O3- SiO2-TiO2, glass-ceramics, Er3+-Yb3+ co-doped Abstract.
Samples were characterized by DSC, XRD, SEM, UV-Vis-NIR and fluorescence spectra and the factors affecting the crystallization of glass ceramics were analyzed.
The results indicated good crystallization property of ZBS glass ceramics.
Glass ceramics, as new functional materials, possess not only high mechanical strength, good thermal and chemical stability and dielectric properties, but also excellent optical performance, with a variety of applications in optoelectronics and laser technology[3-7].
The most important factors affecting the performance of glass ceramics are the type of the main crystalline phase and the grain size.
Online since: September 2017
Authors: L.V. Kim, E.E. Shaly
These factors are the most essential for the lifetime of the concrete elements.
Freeze-thawing resistance of the concrete depends on some of its properties such as the strength of cement stone, dilatability, concrete creep, but the most essential properties are saturation degree and pore structure of the cement stone [4].
The normative approach to the cycle numbers using transitions through 0°С does not take into consideration such important factors affecting freeze-thaw resistance as water saturation, variability of negative temperatures, the concrete state of stress and some others.
The goal is to develop the mechanical model of concrete degradation under the effect of chloride ingression and other factors.
The goal is to develop the mechanical model of concrete degradation under the effect of chloride ingression and other factors.
Online since: August 2024
Authors: Yuliya Danchenko, Vladimir Andronov, Halina Olijnyk, Oleksandr Mirus, Valentina Evtushenko
For a reasoned choice of the composition of polymer concrete with the necessary properties, a visual comparative characteristic of existing materials is necessary, which should take into account technical and economic, operational and technological factors.
Polymer concrete composite materials have physical and mechanical properties that mostly exceed the properties of traditional cement concrete.
To partially level these factors, mineral fillers and other various additives are added to thermosetting resins [45].
Liqun, An Experimental Study on the Dynamic Mechanical Properties of Epoxy Polymer Concrete under Ultraviolet Aging.
Schubel, Optimal Design for Epoxy Polymer Concrete Based on Mechanical Properties and Durability Aspects.
Online since: July 2018
Authors: Dmitry А. Chinakhov, А.A. Saranchin, Dmitriy P. Il’yaschenko, V.I. Danilov, R.A. Mamadaliev
How Dynamic Properties of Inverters Influence Electrode Metal Transfer to the Weld Pool, and Change Structural and Phase Composition of Welded Joints Produced Via High Alloyed Electrodes D.P.
Literature analysis [15-20] helps prove that corrosion and mechanical destruction of welded structures most commonly happen in heat-affected zones, with length and properties dependable on the parameters of a thermal cycle of welding.
Corrosion and Mechanical Properties of Austenic Steel Weld Joints (2015) IOP Conference Series: Materials Science and Engineering, 91 (1), art. no. 012010
[17] Predicting the properties of the metal of welded joints on the basis of the results of quantitative parametrisation of structure / E.A.
Structure and properties of welded joints of chrome manganese steels.
Online since: June 2013
Authors: Jin Ze Yu, Gang Xu
Table 1 illustrates the results of tensile properties of the samples.
Table 1 Tensile properties of milk protein fiber/cotton blended yarn Trail No.
Relation of the strength of milk protein fiber pure yarn and twist factor The quality of the product, yield, cost, and the handling property were affected by the twist.
Different kinds of fibers have different twist factors. 18tex milk protein fiber pure yarns with different twist factors were spun.
Table 2 Tensile properties of milk protein fiber pure yarn with different twist factors Twist factor 300 320 340 360 380 390 400 Tenacity(cN/tex) 9.8 10.47 11.18 12.06 11.57 10.76 10.5 Elongation(%) 18.6 19.5 18.8 21 17.9 21.5 20.3 According to Table 2, the relation of the strength and the twist factor of milk protein fiber pure yarn are displaced in Fig.3.
Online since: May 2014
Authors: Cheng Ping Siao, Chao Cheng Chang
Friction is one of the key factors affecting the metal forming process.
The micro metal parts with two dimensions in sub-millimeter range may be produced by metal forming processes which offers the advantages of high production rate, low material loss and excellent mechanical properties of the products.
Moreover, micro metal parts have a high ratio of surface to volume that may increase the impact of friction on loads, materials flow and thus product properties.
Both may had close values of surface roughness but the friction factors were clearly different.
Ratios of cup height to rod length at different strokes and estimated friction factors Load.
Online since: September 2013
Authors: Rui Ping Zhou, Chun Xing Hai
Since this effect is one of the open space effects, Its influence factors are not only more and change has lagged behind.
Research the object Field investigation, laboratory analysis and test Subject Put forward Soil properties of underlying surface windmills Without windmills the soil properties of underlying surface The wind power field effect on surface soil properties and mechanism of the effect Comparative analysis of two Soil properties of underlying surface without windmills Soil properties of underlying surface windmills The wind power field effect on surface soil properties and mechanism of the effect Conclusion Soil porosity Volume weight of soil Soil mechanical composition Soil moisture content Soil density Moisture penetration Soil physical properties Soil chemical properties Soil hydraulic properties Soil total nitrogen Soil total phosphorus Soil total potassium composition Soil available nitrogen Soil available phosphorus Soil available potassium Soil organic matter Fig.1.
Sample pipette method would be used to determined the soil mechanical composition.
Basically do not only eliminates interference factors and can reflect the wind disturbance on the surface of soil characteristics.
Smaller overall error of the measurement results, experimental design is fully able to meet the wind power field on surface soil properties affecting degree.
Online since: November 2010
Authors: Feng Lu, Di Zheng, Yong Jie Shi, Bin Huang
China 2College of Mechanical Science and Engineering, Jilin University, Changchun 130025, P.R.
The factors affecting the critical speed were discussed, and an experiment was conducted to ascertain the validity of the theoretical analysis.
Under the zero-field condition, the MRF presents the characteristics of a Newtonian fluid; while under an external magnetic field, the rheological properties of the MRF will change drastically and become solidified; when the magnetic field is removed, it will return to its original state of Newtonian fluid [2].
This property makes the MRF a wide range of potential application in mechanical engineering and civil engineering [3-5].
The rheological property of the MRF makes a decisive impact on the output torque of the MRT.
Online since: November 2006
Authors: Shi Cheng Zhang, Xiu Xi Wang, Heng An Wu, J. Zhang, Zhi Long Lian, Bing Xue
They suffer from several major limitations such as uncertainty of the mechanical properties of the layers, the state of stress in the formation, etc.
Factors of Affecting Fracture Propagation Fracture propagation is not only determined by internal factors of the reservoir mechanical properties and fluid properties, but also affected by external factors of injection pressure and injection rate.
The reservoir mechanical properties that affect fracture dimensions most are the in-situ stress distribution, Young's modulus, fracture toughness.
The reservoir mechanical properties used in this study are listed in Table 1.
The numerical results of typical examples show that fracture growth is mainly characterized by the reservoir mechanical properties, fluid properties, in-situ stress, fracturing treatment manner, etc.
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