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Online since: July 2011
Authors: Bei Qing Huang, Xian Fu Wei, Mao Jie Yu
Resin as an important part of water-based plastic gravure ink which directly affect the performance of ink.
Glossiness is an important index of printing quality. resin determines the surface properties of ink film, so it has a significant influence on ink glossiness.
Therefore, to obtain high gloss ink should use the resin with small particle size, well dispersion properties.
[4] Changsheng He, resin which use of printing ink affect the performance of the ink[J],China Packaging quote,2007.8.13, In Chinese
[5] Yongchang Chen, The Influencing Factors Of The Gloss Of The Ink Prints[J],Print Word,2004.9, In Chinese.
Online since: May 2021
Authors: A.V. Korshunov
An explanation for the observed influence of structure and dispersion factors on the melting parameters has been proposed on the basis of X-ray diffraction data, electron microscopy, and model calculations.
It is known that varying the size of structural units (crystallites) of compact metals, as well as particles of metal powders, allows to change the electrophysical, mechanical, optical, physico-chemical properties of such materials.
Zhai, Size-dependent melting properties of Sn nanoparticles by chemical reduction synthesis, Trans.
Dong, et al., Size-dependent melting properties of tin nanoparticles, Chem.
Zhan, The effects of the size of nanocrystalline materials on their thermodynamic and mechanical properties, Nanoscale Res.
Online since: April 2013
Authors: Zhao Hui Zhen, Zheng Shun Wang
For after high temperature resistant coating surface coating of tin model coating physical mechanical properties and high temperature resistant, heat insulation temperature difference of performance test, the results indicate that the system of high temperature resistant coating resistant to 400 ~ 500 ℃ high temperature, and has good high temperature resistance, heat insulation performance, etc.
Organic silicon resin type and basic property of the coating of high temperature resistant performance has a very big impact, in addition, the choice of packing and formula optimization can also affect coating of high temperature resistant performance.
This research mainly through the Aladdin reagent (methyl trichlorosilane, phenyl trichlorosilane, dimethyl dichlorosilane) and acetone, toluene and reagent selection, seeking the synthetic organic silicon resin high temperature resistant coating the optimal scheme, to study various experimental factors on the synthesis of organic silicon resin high temperature resistant coating, and the influence of sample and of high temperature resistant coating on the various performance indicators detection.
Online since: November 2018
Authors: Abdel Hakem Belaghit, Salah Mebarki, Mekki Larabi, Benaoumeur Aour
It is permanently exposed to high pulsatile pressure and shear stress, which makes it subject to mechanical injury.
The material properties of the blood are taken as follows [14]: dynamic molecular viscosity: 0.003 kg/(m.s),  density: 1060 kg/m3.
In fact, this numerical simulation allowed us to identify the morphological and/or biomechanical factors that can be used to predict the subsequent risks underlying the aneurysmal development of the aorta and stent implantation.
In addition, it provides surgeons more insight into hemodynamic factors, such as, the 3D pressure field and shear stresses of the aortic wall.
Kleinstreuer, Analysis of biomechanical factors affecting stent-graft migration in an abdominal aortic aneurysm model, Journal of Biomechanics. 39 (2006) 2264–2273
Online since: January 2015
Authors: Li Bao An, Song Gao, Shi Long Gao, Xiao Chong Wang
Owing to their unique properties, CBN cutting tools can perform better machinability compared to traditional cutting tool materials.
Cutting force Cutting force is closely related to the mechanical properties of the workpiece material.
Surface roughness Surface roughness is a vital factor which can influence the property of the machined parts such as fatigue strength, wear resistance, and corrosion resistance [6].
The cutting parameters are the important influential factors of surface roughness, mostly including the cutting speed, feed rate, and depth of cut.
Tool wear and tool life of CBN cutting tools are mainly affected by cutting temperature.
Online since: June 2012
Authors: Ya Mei Lin, Cui Wei Li, Chang An Wang, Feng Kun Yang
Due to the combination of these good properties, porous ceramics have been widely used as thermal insulators.
An investigation on the relationship among phase compositions, properties and microstructure is presented.
Three specimens at least were used to determine the average of those properties.
Mechanical strength and thermal conductivity.
The 40 mol% mullite specimen has the best combination properties.
Online since: September 2013
Authors: Pal Molian, Ammar Melaibari
Picosecond Laser Micromachining of Ultra-hard AlMgB14 Thin Films Ammar Melaibari1, a, Pal Molian2,b 1Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA Department of Mechanical Engineering, King AbdulAziz University, Jeddah 21589, Saudi Arabia 2Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA aammarm@iastate.edu, bmolian@iastate.edu Keywords: Thin film, Ultra-hard material, Picosecond laser, Micromachining Abstract.
Results indicated a clean material removal process characterized by absence of heat affected zone, high-speed scribing and small feature size.
The energy fluence for the removal of 100 nm thin film without affecting the silicon substrate was 0.3 J/cm2.
The laser beam profile is Gaussian with an M2 factor of less than 1.2.
Such a teardrop shape is attributed to the scanning speed and thermal transport properties of thin film; 4) the size of scribed zone changes in a more pronounced manner with pulse energy than scanning speed implying that the geometry of channel is best controlled by pulse energy; 5) higher pulse energies resulted in possibly some recast layer (Fig.2a, b) within the scribed zone probably caused by the remelting of silicon; 6) the particulate matter in thin films is not removed in most cases (Fig.2c-f) partly due to the size effect; 7) there is no overlap of laser pulses in cases of higher scanning speeds due to the fact that the beam velocity (spot size times pulse repetition rate) is slower than the galvanometer scanning speed; and 8) pulse energy 0.6 µJ/pulse and scanning sped of 1500 mm/sec are the most optimum in removing the film with almost no heat affected zone.
Online since: August 2012
Authors: Ana Lúcia Diegues Skury, Marcia G. de Azevedo, Sérgio Neves Monteiro, Guerold S. Bobrovinichii, Apostolos Silva
The penetration coefficient varied from 0.89 x 10-7 to 6.41 x 10-7 mm2 indicating that the migration is affected by several factors.
These variations are due to the several distinct processing techniques that are differentiate by specific factors such as the high pressure device (HPD), the diamond particle size, type of binder, heating system, among others [4,5].
It was also found that the factors with higher importance determining the impregnation kinetic were the pressure difference, ∆p, the penetration coefficient Kp and the activation energy, Ea.
In fact, an increase in the initial fragmentation of the diamond particles raises the penetration coefficient and affects the infiltration kinetics and HPHT conditions.
In: HIGH PRESSURE INFLUENCE IN THE STRUCTURE AND PROPERTIES OF THE SUPERHARD MATERIALS.
Online since: February 2015
Authors: Yuan Hao Zhu, Hao Li, Yu Hua Xin
However, these also led to increasing costs which could greatly affect the markets.
Table 1 Parameters for the accumulator factor Accumulator volume (L) Piston area (m2) Dead volume at oil side (L) Dead volume at gas side (L) value 65 0.062 0.20 0.25 The selection of ideal or real gas behavior influences the calculation of the pneumatic state quantities.
In this calculation, the hydro-mechanical and volumetric efficiency are taken into account.
Generally, the hydro-mechanical efficiency of a pump or motor strongly depends on the pressure drop and the speed which are defined as: Hydro-mechanical efficiency of the Pump Hydro-mechanical efficiency of the Motor Theoretic torque of the Pump/Motor Where,, , and are the friction torque, effective torque of the pump, effective torque of the motor, displacement volume and pressure drop.
Conclusion The paper introduced a novel hydro-pneumatic accumulator system and finished the work from modeling through simulation, a lot of real factors are taken into account in order to build a more ideal mathematical model, structure parameters and physical properties of the components are determined to suit the power demands of HAS.
Online since: April 2008
Authors: Jian Zhong Zhou, Su Qing Jiang, Yue Qing Sun, Yi Bin Chen, Shu Huang
Introduction With the advent of high-power pulsed lasers, an emerging process named Laser Shock Peening (LSP) is developing, which uses laser shock wave to create residual compressive stress on the superficial layer, and then metal plate creates appreciable improvements in surface properties [1].
As we all known, residual stress is the main influencing factor to the deformation and crack of parts, and will affect the components' static strength, resistance to fatigue and corrosion.
Fig.5 Residual stress after forming Fig.6 Surface topography after forming (100×) Response Optimizer Design of Strengthening Effects Factorial Design can be used to study the effects of multi-factors during LSP simultaneously, which will save more cost and time than studying single factor, what's more, the interaction between factors can be approached.
These plots show how a response variable relates to two factors based on a model equation.
Ni: The Study of The Mechanism and It's influencing Factors on Laser Peen Forming of Sheet Metal (Jiangsu University,China,2006) [7] J.J.
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