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Online since: July 2019
Authors: Stefan Valkov, Vesselin Nikolov, Vanya Zaharieva, Maria P. Nikolova, Peter Petrov, Emil H. Yankov
The results indicate the suitability of both mild and severe EtO sterilization methods for improvement of the desired physicochemical properties of gradient TiN/TiO2 coatings.
The process affects some physicochemical properties of biomaterials such as surface chemistry, energy, and wettability that are proved to play important roles in bio-recognition and acceptance by the surrounding tissue [8].
The concentrations (in at%) of the observed chemical elements were calculated by normalizing the areas of the corresponding photoelectron peaks to their relative sensitivity factors.
Mainil-Varlet, Effect of thermal treatment on sterility, molecular and mechanical properties of various polylactides. 2.
Prociow, Structural and surface properties of TiO2 thin films doped with neodymium deposited by reactive magnetron sputtering, Materials Science-Poland, 31(1) (2013) 71-79
Online since: March 2024
Authors: Didier Talamona, Asma Perveen, Salikh Omarov, Nurlan Nauryz
It has superior bioactivity, corrosion resistance, and mechanical properties.
Late studies investigated different effects on biocompatibility for different surface properties.
The value of error in MRR states its dependency on several external factors which can be affected by debris removal ability.
One of the reasons for the small significance of this factor can be affected by a small difference between its levels which decreased the influence on output results compared to differences in levels of capacitance since both factors contribute to the discharge energy.
Also, contributions and significances of both factors were evaluated by using ANOVA.
Online since: October 2014
Authors: Yu Xi Guo, Hong Wei Huang, Pan Hu, Yi He Zhang
Thus this paper examines the relationship between processing conditions and mechanical properties of foamed glass ceramics produced from mixtures of red mud and flay ash using CaCO3 as foaming agent.
Fig. 1 Evolution of apparent density and compressive strength with sintering temperature When the sintering temperature is kept constant at 840˚C, the holding time is then another important factor affecting the quality of the samples.
Fig. 2 Glass ceramic foams (840˚C) at different holding times: (A)5 min; (B)15 min; (C) 30 min; The physical properties of the foams obtained with different holding time at 840˚C are shown in Fig. 2.
Also, higher physical properties can be achieved by short holding time and fast heating rate.
Structure, Manufacturing, Properties and Applications, Wiley-VCH, Weinheim, Germany, 2005
Online since: January 2016
Authors: Ivan Chmúrny
Design values from STN EN ISO 6946 [7] are used for declaration of thermal properties of building structures particularly in terms of winter season.
Other shading correction factors are considered equally for all alternatives FC = 1 a Ff = 0.8.
We see that with increasing thermal insulation properties of walls, roofs, floors and windows increases the energy need for cooling.
Energy need for heating with increased thermal insulation properties but decreases significantly (Table 7).
Part 3: Properties of environments and building products.
Online since: October 2004
Authors: Zhi Peng, Terry Sheppard
In order to achieve the optimum mechanical properties in AA2024, it is usually necessary to solution heat treat and age the wrought product.
Specimens were also taken along the length of the extrudate to determine the range of properties.
The predicted fraction recrystallised factors at the periphery of the T shape section are shown in table 4.
With FEM simulation, the distribution of the volume fraction recrystallised factors can be predicted and extracted more easily.
Considering these factors, the predicted results can be regarded as in reasonable agreement with the experimental measurement.
Online since: March 2011
Authors: Wei Liang, Yu He, Lu Lu Yang, Lin Sha
The coefficients such as material properties and structure dimension of the slot are discussed.
As a consequence, the relations of two factors should be handled properly.
The impact properties simulation on grid stiffened structure is then performed using the finite element model.
The finite element method is also used in calculating the mechanical properties of grid stiffened structure under impact, the stress and displacement timehistoryplot under different conditions are then obtained.
The anti-impact properties of grid stiffened structure are fairly good.
Online since: March 2013
Authors: Bovornchok Poopat, Nusara Tiyasri
Mechanical properties and microstructure are evaluated.
Therefore, GTAW and GMAW-pulse clad weld procedure could give required properties according to clad line pipe standard, reduce cost of production and increase productivity compared to the peel back method.
The weld soundness, microstructure and mechanical properties were investigated.
Heat input is one of the major factors that can cause solidification cracks in nickel base weld metal thus a low heat input welding procedure must be considered necessary for clad joining.
Mannan, Microstructure and mechanical properties of Inconel 625 supperalloy, Journal of Nuclear material 288 (2001) pp. 222-232 [11] Dong Jin Lee, Youn Soo Kim, Yong Taek Shin, Contribution of Precipitate on Migrated Grain Boundaries to Ductility-Dip Cracking in Alloy 625 Weld Joints, KIM and Springer, Vol. 16, No. 5 (2010). pp. 813-817 [12] I.L.W.
Online since: April 2019
Authors: Motonori Tamura
Hydrogen in many metallic materials, such as carbon steel [1-5], stainless steel [6-9], and aluminum alloys [10-12], affects their mechanical properties negatively.
However, the reported hydrogen permeation reduction factors vary significantly.
Hirth, Effects of Hydrogen on the Properties of Iron and Steel, Metall.
Nakai, SCC properties of 7050 series aluminum alloys in T6 and RRA tempers, J.
Shibata, Evaluation of Mechanical Properties of Metals at 45 MPa Hydrogen, J.
Online since: January 2014
Authors: Xiao Wu Zhang, Chang Feng Men
The springback predication for A pillar reinforcement plate with drawing surface optimization Xiaowu Zhang1,a ,Changfeng MEN1,b, 1 School of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, P.R.China azhang_x_w@yeah.net,bmenzi6210@sohu.com Keywords: Automobile die, Springback, Numerical simulation Abstract: More and more high strength steel panels are used in the Auto assembly for the reason of reducing pollution emissions and fuel consumption.
Springback is affecting by lots of factors, such as process parameters such as binder force, contact condition of mechanical properties and geometry of the blank.
Online since: June 2015
Authors: K. Palanikumar, M. Kathirvel
Palanikumar2, b 1Department of Mechanical Engineering, PSN Institute of Technology and science, Tirunelvel- 627 152, India. 2Department of Mechanical Engineering, Sri Sai Ram Institute of Technology, Chennai- 600 044, India.
amkathirvelphd@gmail.com , b palanikumar_k@yahoo.com Keywords: Metal Matrix Composites, Surface roughness, volume fraction Abstract: Metal matrix composite materials are finding increased applications in many fields due to their excellent properties.
Introduction Metal matrix composite (MMC) materials are finding increased applications in many fields due to their excellent properties compared to the conventional materials.
Table.2 Properties of the Composite Material Material Form Formula Melting Point (°C) Density g/cm³ Graphite Powder C 2054 3.97 Silicon Carbide Powder SiC 2730 3.22 Aluminium A 6061 Chip Al 660 2.70 The experiments are conducted on lathe.
Many factors affect the surface condition of a machined part, cutting parameters such as spindle speed, feed rate and depth of cut have a significant influence on the surface roughness for a given machine tool and work piece set-up.
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