Search results

The observed adsorption sequence can be explained by the ionic properties of the metal ions.
Separation factors (α21) were calculated for all binary systems to evaluate BC/Fe3O4's selectivity towards heavy metals.
The obtained separation factors across all systems further confirmed the affinity sequence of the three metals for BC/Fe3O4 following the order Pb²⁺ ≫ Cu²⁺ > Cr³⁺.
This reduced effectiveness can be primarily attributed to two factors.
This hydrolysis affects the surface properties and binding sites of the material, potentially leading to the formation of more stable metal-surface complexes that are more difficult to desorb.

As a result, formation of surface layers with special properties for sliding friction assemblies, for example, journal bearings (JB), is the critical task at present.
The applied materials of anode and cathode, and their some physical and mechanical properties are mentioned in the Tables 1, 2.
Physical and mechanical properties of the materials, applied during electroerosion alloying as cathode (sample) Material grade (DIN) Crystal lattice Tensile strength under tension [Kg/mm] Yield point, [kg/mm2] Hardness, [HB] C 45 CBL (cement bond log) 96.8 84.6 280 41 Cr 4 CBL (cement bond log) 98 86 220 The majority of factors have impact on the quality characteristics during electroerosion alloying, of the list of which the alloying modes should be marked out.
Physical and mechanical properties of materials applied during electroerosion alloying as anode (alloying electrode) Material grade Melting temperature, [ºC] Hardness Thermal conductivity, [W/m K] Coefficient of thermal expansion 10-6 , [grad -1] copper 1084 88HB 401 16.5 silver 817 25HB 453 14.2 tin 232 5HB 59.8 22 indium 157 0.9HB 87 60.5 Fig. 1.
[5] D.N.Reshetov, Machine parts: Textbook for students of engineering and mechanical specialities, Machinebuilding, Moscow, 1989

The pre-ECAP mechanical properties were 232 MPa tensile strength, 65% elongation, and Vickers hardness of 63 (load: 2.9 N).
After eight ECAP passages, the properties changed to 438 MPa, 28%, and 141, respectively.
The fatigue specimens were electrolytically polished (approximately ≈ 25 mm from the surface layer) prior to mechanical testing to remove any preparation-affected surface layer.
[5] P.Cavaliere, Fatigue properties and crack behavior of ultra-fine and nanocrystalline pure metals, Inter.
[11] N-A.Noda, M.Kagita, Variations of stress intensity factors of a semi-elliptical surface crack subjected to mode I, II, III loading, Inter.

With the rapid development of China's industrial technology, Researching and developing the spring with independent intellectual property is imperative.
This disadvantage will affect the service life.In perpendicular direction of the shear direction, Exerting pressure F，Then do the shear stiffness test，In the shear direction，Exerting pressure and measuring deformation.
References [1] Hesheng Zuo .Mechanical impedance method and application[M]Beijing：Mechanical industry press .1987
The resonant vibration of mechanical theory and application .
Mechanical vibration study[M] Shanghai Jiaotong University Press. 1985.3

Therefore three types of materials have been chosen based on the thermal properties: aluminium alloy, mild steel and Polymethyl methacrylate (PMMA).
Details of the specimen dimensions are given in Table 1, with typical material properties given in Table 2.
z x y Figure 1 Test specimen Table 1 Specimen dimensions Table 2 Mechanical and Thermal properties of the materials used in this study For each specimen thermoelastic data was recorded at the following frequencies: 2, 3, 5, 10, 20, 30 and 40 Hz.
∆T was calculated using equation (1) with the material properties given in Table 2 and is also given in Table 3.
The thermoelastic response from the TSA was normalised and plotted as stress factors (see above) in Figure 2.

The magnetic property of nanocrystalline CoFe2O4 is found to depend on many factors including crystallite size, morphology, chemical composition and cation distribution [4].
Song, Synthesis and magnetic properties of CoFe2O4 ferrite nanoparticles, J.
Ceeylan, Synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles prepared by wet chemical route, J.
Kim, Growth of ultra-fine cobalt ferrite particles by a sol–gel method and their magnetic properties, J.
Li, Low-temperature auto-combustion synthesis and magnetic properties of cobalt ferrite nanopowder, Mater.

Mechanical properties and surface roughness were studied and the scaffolds displayed a Young’s Modulus of 169 MP and an average roughness of 72 nm respectively.
To determine the mechanical properties of the CGA-AMP-Collagen-AGG scaffold, we utilized peak force microscopy using AFM.
For example, oral biofilm formation has been found to be a challenge affecting the RANKL-OPG system in periodontal ligaments [109].
Carter, Mechanical properties of the human achilles tendon, Clin.
Vanderby, Quantification of collagen organization and extracellular matrix factors within the healing ligament.

Poor applicability of traditional processing technology, difficult to process and high processing costs affect the overall growth of the using of Nomex honeycomb material [4].
With the Nomex honeycomb composite material properties, this paper proposed the NC cutting method based on ultrasonic vibration, analyzed the curved surface forming principle and established an error analysis model.
The basic principle of ultrasonic cutting is to use an electronic ultrasonic generator, which first creates an ultrasound with the frequency 20~30kHz, then the ultrasonic-mechanical converter placed inside the ultrasonic cutting head converts the ultrasonic vibration with weak amplitude and energy into mechanical vibration of same frequency, and the resonance amplifier gets amplitude and energy that is strong enough and can meet the requirements of cutting parts, finally transfers to the cutting tool placed on the top of the ultrasonic cutting head for the cutting process of composite material.
Tool path generation is by the parts geometry model, to calculate the tool position and produce processing trajectory, according to the selected cutting machine, cutting tool, feed method, mechanical allowance and other factors.
Hong Soon H:Mechanical behavior and failure process during compressive of honeycomb composite at elevated temperatures.

Introduction Joints are the main influencing factor for the deformation, failure and instability of surrounding rocks.
Currently, few attempts have been done on the stability of tunnels affected by joint sets with different orientations and overburden pressures.
Without original state of strain energy, this elastic body is considered as an optimal material to simulate the actual behaviours of physical and mechanical properties of a geological body after diagenesis.
Studies shown the main cause of the deformation and failure of the tunnels are the mechanical performance of the shear slip and deformation of joints due to excavation and the overburden pressure.
Its mechanical essences are the continued deformation and the repeated failure of joints in varied stress field caused by excavation and overburden pressures.

The dynamic response of the clamped beam under low velocity impact Wengui.Long1,a, Zhuhua.Tan1,b, Yang.Liu1,c, Furui.Wang1,d 1State key laboratory of advanced design and manufacturing for vehicle body, College of mechanical and vehicle engineering, Hunan University, Hunan, 410082, China.
Jacob [3] conducted many experiments on clamped beams subjected to localized loading, study focuses on the final deformation affected by geometry of the beam.
However, theoretical analysis ignores these factors, and the theoretical model is based on the quasi-static loading condition. (2) The empirical equation about the dynamic yield stress may not apply.
It is found from the figure Fig. 8(a) that in the early-time elastic response, the variation of the stress indicates the dispersive property of the elastic flexural waves: the wave peak in the rear are more intense in magnitude than that at the front of the wave packet .
The dynamic response of the clamped beam is divided into four stages: elastic fluctuation, the overall structural response, unloading response and free vibration, plastic hinge forms in the overall structural response stage, the hinge also affects the variation of the stress, the stress displays a platform on the stress-time curve.