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Online since: April 2019
Authors: Nuttapon Pisitpipathsin, Puripat Kantha, Naris Barnthip, Tawee Tunkasiri, Kamonpan Pengpat
Moreover, the physical properties such as density, porosity and mechanical properties were systematically investigated.
The effect of thermal treatment temperature ranging from 750 to 1050°C with fixed dwell-time for 4 h on phase formation, mechanical properties, and bioactivity of glass-ceramics based on the SiO2-Na2O-CaO-P2O5 system has been carried out and reported in order to study the phase evolution, and the relationship between electrical properties and bioactivity of the 45S5 bioglass.
Those prefered factors were applied to be the estimation of the heat treatment condition for all 45S5 bioglass.
The mechanical property of ceramics in the order of Vickers hardness was investigated.
The samples with heat treated at 1050°C for 4 h displayed the maximum physical and mechanical properties.
Online since: March 2017
Authors: Dashnor Hoxha, Marouen Slaimia, Naima Belayachi
The risk of moisture accumulation is dependent on multiple factors including weather conditions, exposure to driving rain and wind, orientation, material properties and air permeability.
The presence of an insulator affect in a significate way the heat flow across the wall.
Shen, « Physical and chemical properties of flax fibres from stand-retted crops desiccated at different stages of maturity », Ind.
Al-Mukhtar, « Thermo-Mechanical Behaviour of an Innovant Straw Lime Composite for Thermal Insulation Applications », Appl.
Künzel, « Factors determining surface moisture on external walls », in Proceedings of the XI International Conference Thermal Performance of the Exterior Envelopes of Whole Buildings, 2010, p. 1–6
Online since: August 2013
Authors: Mohd Hilmi Othman, M.Z. Ibrahim, L. Li, Hasan Sulaiman
He concluded that injection speed, core cylinder temperature and mould temperature are factors that can influence the mechanical strength of sandwich injection moulding.
He also said that melt temperature and injection pressure are the secondary factors, but higher melt temperature and injection pressure are also necessary in moulding process of ultra-thin wall plastic parts.
Aluminium is a useful metal that provide many usage with valuable properties.
As this metal has recycling properties, it is enough to meet all our daily needs.
This effect is extremely important in fracture mechanics and it gives aluminium so many of its important properties [11].
Online since: June 2013
Authors: Yu Liu, Wei Wang, Peng Fei Wen, Jun Tong
Kim[[] H.G.Kim, H.S.Son, S.H.Park, Development of Thermal-Mechanical Coupled Simulation Skills for Hot Press Forming Tool Design.
Different from stamping at room temperature, thermo-mechanical analysis should be considered at hot stamping process.
The thermal and the phase transformation effects at the cooling stage will both affect the final part mechanical properties.
The plastic deformation of metal in the specified thermal state will lead to dynamic recovery, dynamic recrystallization and static recrystallization that affect the grain size and distribution of dislocation so as to soften steel.
Y is correction factor
Online since: December 2010
Authors: Ji Tao Du
The former is mainly restricted by the sheet shape thickness and down pressure, tensible force, velocity of working roller and forward slide and behind slide;the latter is mainly affected by the thickness error and hardened fluctuating,mill eccentricity, lubricate state, friction factor and tensible force fluctuating by rolling velocity change.
(3) In the equation, standing for the thickness fluctuating value of every surve segmens, standing for the thickness fluctuating value of every surve segmens mathematics model, standing for the thickness fluctuating ameding factor of VMT forecasting, standing for the thickness fluctuating warp factor of network forecasting every surve segments.
TRB takes on the preferable mechanical properties and is adapted the loading demand of many car-body parts,yet the deforming degree of each position exists asymmetry, it will lead the forming process complexity and control difficulty.
The system integration must think over the whole processes for the whole inferior to none ,the project must consider the factors of technique, yield efficiency and economy.
[8] Hui Gao, Gang Zheng, Guangyao Li: Chinese Journal of Mechanical Engineering, Vol.44(2008),p.102-105, in Chinese.
Online since: May 2019
Authors: Tadashi Nishihara, Takahiro Ohashi, Hamed Mofidi Tabatabaei, Kento Okuda
In this study, a basic framework for the transcription of the surface of a mirror-finished die onto a metal plate by FSF is provided, and the results under various experimental conditions are shown to discuss the factors affecting surface roughness and the range of processed area of the material.
In addition, it can improve the mechanical properties of the skin of the product by compressing the surface layer of the material.
Sasahara et al.[10] have studied how to utilize the friction stirring process for burnishing from the view of improvement of the mechanical properties of a product’s skin and call it "friction stir burnishing."
Contrariwise, our study focused on surface roughness of a product rather than the improvement of the mechanical properties of the skin of a product.
Online since: February 2011
Authors: Shi Jin Chen, Kai Cheng, Tian Jian Li
Using variables intimately related to motion errors and under constrained by cost, optimization model is established, then it is solved with Monte Carlo simulation method to compute top ten key factors contributed to errors and obtain distribution probabilities of both position error and gesture error.
At the same time, the top 10 effect factors of error motions are obtained.
In the steady-going mass production, the size and matter property of parts are approximate to normal distribution.
Key factors contributed to errors Table 4.
Using the geometric errors extracted from the motion errors, thousands of simulations have been implemented with varied tolerances,through what the predominant impact factors have been obtained.
Online since: November 2014
Authors: De Peng Chen, Chun Lin Liu, Zhi Zi Yang, Kai Sheng
At present, the concept of "the volume stability of concrete is one of the main factors affecting the durability of concrete" has attracted enough attention in the field of concrete research.
According to statistics, the eighty percent cracks were caused by the shrinkage deformation of concrete for the concrete structure in practical using [5], the deformation properties of concrete material itself is essential for the crack of concrete structure.
The results showed that the diurnal temperature cycling, the year (season) temperature cycling, the extreme temperature and the length of rainy season were the main factors that affected the coupled heat and moisture behavior of concrete, and pointed out that the relative humidity was not suitable for the characterization of the concrete moisture content under cyclic climate conditions.
Liu et al. [13, 14] study on the simulation temperature field and humidity field of concrete also is based on the porous medium properties of concrete.
Downie, etc, Effect of moisture and temperature on the mechanical properties of concrete, Constr.
Online since: November 2011
Authors: Jing Liu, Ye Xian Ouyang
The magnetic properties including core loss and magnetic flux density are main factors determining the motor efficiency.
The silicon and aluminum are the key elements related to the magnetic properties.
Since phosphorus can remarkably reduce core loss of electrical steels, and has a little effect on its magnetic flux density[2-5], it is a good substitute of silicon and aluminum to improve magnetic properties.
The high temperature annealing brittleness was investigated via mechanical tester, SEM and AES.
It is found that the cooling manners do not affect the time of emerging brittleness.
Online since: November 2003
Authors: Jong Min Kim, Young Eui Shin, Kozo Fujimoto
Material properties of resin materials diluted with BCA (Butyl Carbitol Acetate) were shown in Table 1.
Material properties of phenoxy resin as a function of content of BCA.
Material Thinner [Vol.%] Viscosity [Pa⋅s] Specific gravity Surface Tension at 25 °C [Pa⋅s] 0 27.57 1.04 0.0236 5 16.50 1.03 0.0231 10 11.94 1.02 0.0240 20 7.08 1.01 0.0227 Phenoxy resin 25 4.55 1.01 0.0231 Since the surface state of the pad affects the wetting property of liquid resin on the pad, we performed surface treatment, followed by polishing and degreasing.
Though the liquid volume and viscosity level of the liquid resin critically affect the aligning time and motion, the effect of the viscosity level on the alignment accuracy was not observed if the viscosity level is once low enough to move the chip.
For the alignment processes using the materials with low surface tension, however, the viscosity may be one of the main factors for self-alignment capability with surface tension.
Showing 11951 to 11960 of 25943 items