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Online since: September 2013
Authors: Rodrigo Santiago Coelho, Manuela Klaus, Christoph Genzel
In the case of through-thickness texture variations, the orientation distribution of the crystallites may lead to non-uniform mechanical properties and also cause inhomogeneities in microstructure during subsequent material treatments (e.g. annealing).
Another way to consider the intensity corrections is to treat theoretically the measured data taking into account, beyond other factors, the hkl plane multiplicity, the polarization factor, the mass absorption, the geometric factor, the normalization factor, etc.
Bunge, Influence of texture on mechanical properties, on Microstructure and mechanical properties of materials, Edited by E.
Pyzalla, Microstructure and mechanical properties of magnesium alloy AZ31B laser beam welds, Materials Science and Engineering A 485, 20-30 (2008)
Pyzalla, Microstructure and mechanical properties of an AA6181-T4 aluminium alloy to HC340LA high strength steel friction stir overlap weld, Advanced Engineering Materials, 10, No.10, 961-972 (2008)
Online since: January 2013
Authors: Tao Lin, Shao Yuan Lv, Shi Lei Li, Yong Liang Shi, Hui Ping Shao
The rheological property, curing process and performance of the body were analyzed.
The induction period of the main factors was affected by the initiator added in the gelcasting molded.
Microstructures and mechanical properties of spark plasma sintered Al-SiC composites containing high volume fraction of SiC, Materials Science and Engineering: A, 527(27-28) 92010) 7235-7240
Online since: September 2008
Authors: Toribio F. Otero
Any variable (mechanical, chemical, optical, magnetic..) acting on the equilibrium will induce changes on the working potential of any device, driven by a constant current, based on this reaction: actuating-sensing devices based on the electrochemical properties are expected.
This conformational energy is the basic magnitude for both actuating and sensing properties, opening the way for their quantification.
Moreover, the actuation of the muscle involves simultaneous sensing processes providing living creature with a perfect consciousness of both, characteristics of the mechanical movements and their interactions with the ambient: they are intelligent devices. 1 Among artificial materials chemical and physical processes linked to the electrochemistry of conducting polymers present a great deal of similitude with the above described biological processes, properties and functions, much more similar than those linked to any other artificial material (1-7 and references therein).
- Any change on the A concentration (Figure 5) or on the ionic strength of the solution will also affect the potential of the working device.
Design and structure-properties relationships.
Online since: February 2013
Authors: Fei Luo, Bai Yang Ji, Jian Jun Yi, Hui Jiang, Shao Li Chen
Meanwhile, for material processing characteristics, the main factor that affects the quality of materials processing is the change of the material internal stress, and such state characteristics of the material can be described as a point on the stress-strain-strain rate surface.
Mechanical Mechanism Modeling.
Simulation and Results Analysis For material processing characteristics, the main factor that affects the quality of materials processing is the changing of the material internal stress.
This material state property can be described as a point on the stress-strain-strain rate surface.
Using this property, making the deformation of material processing along the optimal curve, we can obtain well processing results.
Online since: January 2010
Authors: Simona Constantinescu, Tamara Radu, M. Vlad
The literature points out that the welded pieces, cast or forged in Widmanstätten structures, are unsuitable as they make the steel fragile [2] and call for frequent corrections by heat treatment; that is why it is necessary to know the mechanism and kinetics of the factors affecting the crystallization of these structures, unlike those of Widmanstätten type.
S Hansen: Effects of Widmanstätten ferrite on the mechanical properties of a 0.2 pct C-0.7 pct Mn steel Metallurgical and Materials Transactions A, Volume 25, Issue 4 (1993) pp.763-773 [3] R.P.
Online since: December 2012
Authors: Miao Xie, Rong Bao Dong, Jun Meng, Wen Xin Xu, Jian Liang Wang
., Taiyuan 030053, China axiemiao1121@163.com, btymengjun@126.com, c412442029@qq.com, ddongrongbao112@126.com, eljn-22@163.com Keyword: forging equipment; liquid-air hammer; hydraulic system; AMESim; dynamic properties Abstracts: In order to optimize the dynamic characteristic of hydraulic system of large forging equipment.
Therefore, the simulation analysis of the factors affecting the response characteristic of hydraulic system is important to understand the dynamic characteristics of the system[4, 5]. 2 Working principle Main control valve group by more than one cartridge valve, valve block and high frequency response reversing valve.
China Mechanical Engineering,2004,03
Online since: September 2016
Authors: M. Ashwin Ganesh, Y. Raja Sekhar, Gaurav Ganti, Aushman Choudhury
However, these methods usually involve several mechanical parts and are usually designed for high capacity applications to be economically feasible.
Nomenclature c Specific Heat Capacity of Material, [J/KgK] f Focal Length, [m] h Convective heat transfer Coeff, [W/m2K] n No. of Standard Deviations v Wind Speed, [m/s] A Area, [m2] D Diameter, [m] I Direct Solar Radiation, [W/m2] L Thickness, [mm] Q Heat Transfer, [W] T Temperature, [K] α Absorbance ΔΨ Rim Angle Increment[°] Ψ Rim Angle[°] ε Emissivity σ Stefan-Boltzmann Constant[W/m2K4] β Surface Reflectance ρ Density[kg/m3] φ Interception Factor θ Inclination Angle of the Cavity Г Flux Capture Fraction f(x) Defined Function The focus of dish is calculated from the following equation.
Another vital component of the geometry is the intercept factor, which is the fraction of radiation intercepted by the parabolic dish.
In the design adequate care has been taken so that the vibrations may not affect the structural and optical properties of the dish.
The loss of solar insloation due to 1mm gaps in between the rings did not affect the final result much.
Online since: April 2013
Authors: Vaycheslav N. Baumer, Katerina V. Terebilenko, Nikolay S. Slobodyanik, Igor V. Zatovsky
Synthesis, Structure and Luminescence Properties of Rare-Earth Double Phosphates Katerina V.
It has been shown that introduction of rare-earth ion into mixed matrix may affect not only matrix luminescence properties, but also reveals W-O and RE-O charge transfer transitions [5].
The third solvent MI2MVIO4 with the most basic properties gives MI3Ln(PO4)2 for the whole set of rare-earth ions.
Férid, Combustion synthesis and luminescence properties of LaPO4:Eu (5%), J.
Champion, Microstructural dependence of the thermal and mechanical properties of monazite LnPO4 (Ln = La to Gd), J.Eur..
Online since: April 2015
Authors: Manuela Cristina Perju, Sorin Andrian, Simona Stoleriu, Gianina Iovan, Andrei Victor Sandu
Introduction One of the most important factors in gaining optimum physical properties of composite resins is an adequate polymerization [1].
Kruskal-Wallis statistical test result (p values) when compared different composite resins hardness in each light-cure mode Ramp mode Constant mode Pulse mode G C F G C F G C F G - 0.02 0.02 - 0.02 0.02 - 0.02 0.02 C 0.02 - 0.00 0.02 - 0.00 0.02 - 0.00 F 0.02 0.00 - 0.02 0.00 - 0.02 0.00 - G- G-aenial; C- Charisma; F- Filtek Z 250 Discussions The inorganic fillers included in the resin matrix of composite material determine the physical and mechanical properties of the composite.
The factors that could be related with surface microhardness of composite resin are: the size of the filler, the volume occupied by the fillers in the resin, the nature of the filler and the way in which the filler was obtained [14, 15].
Okuno, The effect of filler loading and morphology on the mechanical properties of contemporary composites.
Ştefănescu, Stuctural Properties of Nanofilled and Microfilled Restorative Composites, Mat.
Online since: October 2014
Authors: Yao Jin Wu, Yong Xue, Zhi Ming Zhang, Ya Wei Huang, Qian Qian Wang, Fu Xiang Zhang
The Al-W alloy can only synthesize by mechanical alloying process, as the mechanical alloying is a typical non-equilibrium synthesis technology, can solve the problems brought by the melting point difference and density difference between aluminum and tungsten.
The hardening and softening mechanisms are both significantly influenced by many factors such as strain (), strain-rate (), and forming temperature ().
On the one hand, a given combination of thermo-mechanical parameters yields a particular metallurgical phenomenon (microstructure evolution); on the other hand, microstructure changes of the metal during the hot forming process in turn affect the mechanical characteristics of the metal such as the flow stress, and hence influence the forming processes.
The constitutive relations are often used to describe the plastic flow properties of the metals and alloys in a form that can be used in computer code to model the forging response of mechanical part members under the prevailing loading conditions.
At present, the technique to produce nanometer ultra solid solution of Al-W alloy powder by the mechanical alloying has matured.
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