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Online since: July 2003
Authors: Michael D. Gilchrist
Constitutive Properties The constitutive properties of human brain have been the subject of much research within recent decades.
The mechanical properties of the brain and CSF will affect the pressure response of the brain.
Table 2 summarises the mechanical properties that were used in the subsequent analyses.
It used the same material properties of [53], which were also used by [22].
A hyperelastic material was used for the brain to maintain these properties, in conjunction with a viscoelastic material property, giving the material a decay factor of β = 145s-1.
Online since: November 2013
Authors: Abbas Honarbakhsh-Raouf, Abolghasem Ataie, Hamid Reza Emamian, Omid Mirzaee, Hasan Bafti
The samples proceeding survey demonstrated that the key factors through foam processing by this route are applied force at compact step and heating rate at sinter step.
It is well known that a large number of practical properties of magnetic materials are considerably affected by their particles size and consequently specific surface area [6-8], which are promising in magneto-optics device, gas sensor device and for using in catalytic applications.
M-H loop result shows that the magnetic properties of the derived powders are altered significantly as a function of calcination temperatures.
John Zhang, Size-dependent superparamagnetic properties of Mn spinel ferrite nanoparticles synthesized from reverse micelles, Chem.
Bonacchi, D., Innocenti, Cobalt ferrite nanoparticles: The control of the particle size and surface state and their effects on magnetic properties.
Online since: April 2014
Authors: Yi Min Wang, Yan Ping Wang, Man Yi Wang, Yan Ting Yu, Jian Hua Ni
However, superabsorbent polymers from synthetic polymers, such as polyacrylate and polyacrylamide, which possessed excellent water absorbing properties, were too fragile to use in many fields.
Factors influencing water absorbency of the superabsorbent membranes were studied, such as weight ratio of KPS, PVA and AM to (AA+AM), neutralization degree of AA, cross-linker content and heat-treatment conditions.
So the excellent absorbency and mechanical strength could be both obtained when the weight ratio of PVA to (AA+ AM) was 15%.
Liu, Synthesis and Properties of N-Maleyl Chitosan-Cross-Linked Poly (Acrylic Acid-co-Acrylamide) Superabsorbents, Journal of Polymers and the Environment, 19 (2011) 926-934
Superabsorbent hydrogels from poly (acrylic acid-co-acrylamide) grafted chitosan with salt-and pH-responsiveness properties, European Polymer Journal, 40 (2004) 1399-1407
Online since: January 2012
Authors: Lin Deng, Yan Lv, Rong Gui Deng
Introduction The mechanism of rock burst can be summarized as the hard brittle rock in certain stress environment, the disturbance of surrounding rock of strain accumulation that can overcome the absorption of rock mass destruction than energy to make rock suddenly drawing or shear failure or a cut of the damage from the compound form of parent rocks a dynamic failure[1-3].The mechanical characteristics of rock and energy transfer characteristics is the important factors affect rock burst.
The theory is that is in the process of surrounding rock stress changes in the elastic strain energy gathered sudden release[5].From the surrounding rock properties, the energy storage characteristics of rock itself, the rock deformation characteristics curve , The possibility of rock burst and intensity can be calculated.
Just considered some single factor.
There are many influence factors, such as test conditions, rock property and other factors. therefore, cause large deviation of the results.
Different rock property and structure of the process of rock deformation markedly different, demonstrated the different between get energy and release in the process of deformation and fracture.
Online since: October 2014
Authors: Qin Man Fan
Ignore the influence of the strength, quality, such factors as the position of the center of mass, inertia and parts appearance.
In order to not affect or make less as far as possible influence to performance, the structure is simplified, the 3D model is established and imported into ADAMS based on Pro/E.
Fig 1 The model of a tractor steering mechanism (2) The creation of the ground ADAMS is in a variety of different types of ground spectrum properties file.
Frontiers of Mechanical Engineering in China. 2007 (2) [4] Hazem Ali Attia.
Online since: November 2018
Authors: Ayobami Adebola Busari, Isaac Ibukun Akinwumi, Paul O. Awoyera, O.M. Olofinnade, T.I. Tenebe, J.C. Nwanchukwu
Factor Name Level Low Level High Level Importance A CBR 56.81 51.22 62.4 1 B PI 14.4 13.8 15 1 4.0 Conclusion Aluminum dross, solid waste from aluminum producing industry was used in improving the Geotechnical properties of tropical lateritic soil.
Geotechnical properties of lime-treated gypseous soils.
Microstructure and geotechnical properties of lime-treated expansive clayey soil.
Physical and Mechanical Properties of Aluminum Dross.
Geotechnical properties of lateritic soil stabilized with sugarcane straw ash.
Online since: September 2013
Authors: Qiao Li, Qing Hua Zhang, Chuang Cui, Bing Bai
It is one of the key research topics of the large-span steel cable-stayed bridge to study deeply on the main mechanical behavior characteristics of cable-girder anchorage, clarify the static and fatigue properties of key factors and their effects, ensure structures under static and fatigue safety then.[1-6].
The cable-girder anchorage of Su-tong Bridge, which is a typical large span steel cable-stayed bridge anchor cable box girder anchorage structure taken as subject investigated, its fatigue properties have been studied by model test, of which the researches can provide design and related research of box-shaped cable-girder structure with a scientific basis.
In order to study the fatigue properties of structural anchor box, layout the strain measuring point in the key parts of the test models according to the simulation analysis results.
Fig. 3 Arrangement of strain gauges on the model (mm) The results of the experiment and the evaluation of fatigue property The test results of the main measuring points.
Mechanical features of cable-girder anchorage for cable-stayed bridges with steel box girder Ⅰ: theoretical model [J].
Online since: May 2013
Authors: Yu Hou Wu, Ke Zhang, De Hong Zhao, Xuan Mu
Introduction With the development of mechanical science, the new demands on the mechanical design is how to improve the utilization of materials and reduce the manufacturing costs of the machine.
Therefore, the dynamic characteristics of the cross beam will directly affect the precision of the machine.
At the same time, the properties of intermediate densities are penalized artificially relative to the objective function, such as the SIMP model of the minimum compliance issues [2].
The relational expression based on the SIMP method based topology optimization is shown in Equation,Where represents unit initial elastic modulus and E is the optimized elastic modulus and p is the penalty factor.
Chinese Journal of Mechanical Engineering Vol.41 (2005), p. 13-172 [4] Q.
Online since: March 2016
Authors: Wei Wang, Cun Lei Zou, Ren Geng Li, Wen Wen, Hui Jun Kang, Tong Min Wang
For commercial purpose, optimization of mechanical properties to electrical conductivity can be achieved by means of alloying elements and thermo-mechanical treatment.
Thereafter, the effects of these elements on the properties and structures of Cu matrix have been studied.
Small amount of Co additions significantly affects the room temperature hardness of the hot deformed matrix and dynamic recrystallization structures of Cu-Be alloy[3].
SEM samples were prepared by the conventional mechanical polishing method and etched in an aqueous solution of 3 g FeCl3 + 95 ml C2H5OH + 2 ml HCl.
Considering structure factors, the lattice constant is determined by a=d(h2+k2+l2) -1/2 (1) a0=d0(h2+k2+l2) -1/2 (2) where a is the lattice constant, a0 is the lattice constant at room temperature, d is the lattice spacing, d0 is the lattice spacing at room temperature and h, k and l are the the indices of lattice planes.
Online since: November 2012
Authors: Yasuhiro Yoshida, Takumi Okihara, Mariko Nakamura, Takuya Matsumoto
Therefore, we synthesized biodegradable phosphorylated pullulan to develop a biomaterial that combines primary properties such as high biocompatibility, good bonding potential to hard tissue, high strength, biodegradability, and osteoconductivity.
A previous study had reported that CP induces unwanted heterotopic ossification because of its osteoinductive properties [8].
These properties also make pullulan suitable as a bioadhesive [19].
These factors affected on depression of solubility of the sample in water.
Mueninghoff, Calcium phosphate cement: review of mechanical and biological properties.
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