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Online since: January 2005
Authors: L. Zhen, Yu Sheng Cui, Wen Zhu Shao, V.V. Ivanov
During making and breaking process, micro-cracks occurred along grain boundaries under electrical and mechanical forces.
These factors reduce the reliability of electrical contacts in practice.
When these contacts were applied to severe electromagnetic, thermal and mechanical forces, they would be eroded rapidly.
Localized steep Nb concentration gradient leads to fluctuation of physical properties which results in the deterioration of the material's reliability and increases the speed of commutation wear.
It will contain many influence factors involvong those discussed above.
Online since: August 2016
Authors: Mario Zadra, Nério Vicente Jr., Alberto Molinari, Francesco Bucciotti, Luca Facchini
Fabrication of functionally graded implants by spark plasma sintering and their properties.
Kawasaki, Effect of spark plasma sintering pressure on the properties of functionally graded implant and its biocompatibility.
Zadra, Influence of the sintering temperature on microstructure and tensile properties of Ti6Al4V produced by Spark Plasma Sintering, Proceedings EuroPM2009 Congress and Exhibition, 12-14 October 2009, Copenhagen (Denmark), ed.
Molinari, Microstructure and mechanical properties of cp-titanium produced by spark plasma sintering, Powder Metallurgy 51(1)(2008)59 [9].
Ducheyne, A parametric study of the factors affecting the fatigue strength of porous coated Ti–6A1–4V implant alloy.
Online since: November 2013
Authors: Bao Yu Wang, Lei Fu, Qing Lei Meng, Jing Zhou
After the SHT, the material will be transferred to the press rapidly and deformed quenching simultaneously, and then the mechanical properties of stamped parts are improved by baking.
The uniaxial yield values (σu=0, 45, 90) for each Lankford coefficients (rα=0, 45, 90) are defined by Table 1 [6], and the basic material properties of blank are also in it.
These variables greatly affect the formability and the forming quality.
In the LHD, the design space for each factor is uniformly divided as some levels.
Each level of a factor is studied only once.
Online since: April 2014
Authors: Jakob Kurfer, Gunther Reinhart, Markus Westermeier, Tobias Zeilinger
Core factors that influence the quality, the performance and the cost of high energy lithium-ion batteries are production technologies, quality measurement techniques and quality management methods [3; 4].
All of those factors are influenced by one key component, the energy storage device.
All of these processes influence the chemical, mechanical and electrical properties of the battery cells.
Thereby it is very important to know, how production steps influence a products properties.
Additionally, the heat of the laser beam has an influence on the mechanical properties of the collector foil.
Online since: January 2011
Authors: Šárka Houdková, František Zahálka, Michaela Kašparová, Ondrej Rozum
Used design of experiments (DOE) affects the quality of information distinctively, especially when there are more than 3 input factors.
Due thermal spraying coating or material testing, more than 5 input factors can influence the resulting material properties or behavior.
At first, primary designs of experiments were made to determine dominant input factors and their exact relation to resulting coating properties.
Some of the resulting coating properties (e.g. roughness, hardness, etc.) were considered the significant factors influencing the measured CoF.
Bayer: Mechanical Wear Prediction and Prevention.
Online since: December 2010
Authors: Mei Yang, Qing Shen Zeng, Hong Yu Wang, Wei Xing Zhang
Recently most studies pay attention to 3D simulation and how factors (such as injection pressure, structure of preform and so on) work.
Visualization experiment only used for research about some particular situation or consider several factors.
Conclusions In summary, the main factors that force the emergence of void is resin viscosity, structure and properties of enhanced fabric, porosity, mold surface quality, temperature and injection pressure.
Mechanical properties of composite structures fabricated with the vacuum induced preform relaxation process [J].
An indirect method based on fretting tests to characterize the elastic properties of materials: Application to an epoxy resin RTM6 under variable temperature conditions [J].
Online since: July 2006
Authors: Natasja Euskirchen, Lorenz Ratke, Victor T. Witusiewicz, Laszlo Sturz, Sonja Steinbach
Fe and Mn-rich intermetallic phases are well known to be strongly influential on mechanical properties in Al-Si alloys.
It forms intermetallic compounds that are detrimental to static and dynamical mechanical properties [1].
It would be of great benefit to the casting industry if technologies could be available that allow to control these phases and handle the morphology and spatial arrangement of these intermetallics in aluminum casting such that the mechanical properties are positively affected by them.
Essential to the facility is first the optical control of the processing due to the transparency of the aerogel crucible used, second the flat isotherms in the samples, due to the extremely low thermal conductivity of aerogels and third that due to the aerogel properties a magnetic field device could be brought very close to the sample.
These simple models lead to a power law of the type [12-14]: b ftMB ⋅⋅≈2λ (1) with B a geometric magnification factor, M the magnification factor containing all material constants (diffusion coefficient, Gibbs-Thomson coefficient, eutectic concentration, global concentration, liquidus slope and segregation coefficient), tf the solidification time, that is the time for which the solid and the liquid co-existed and b = ⅓ for diffusive mass transport.
Online since: March 2008
Authors: Werner Riehemann, Agnieszka Mielczarek, Marcin Marczyk
Future industrial application of high damping Cu - Al - Mn alloys is very probable because many mechanical problems can be solved by the passive damping of mechanical vibrations.
Easy castability under air [2] and good mechanical properties make Cu - Al - Mn alloys very attractive for industrial applications, too.
Thermal and mechanical stability of shape memory alloys are important factors for technical damping applications.
The direct transformation temperatures are essentially unchanged, or at least much less affected by thermocycling than the reverse ones.
Conclusions The direct transformation temperatures are essentially unchanged, or at least much less affected by thermal cycling than the reverse ones.
Online since: October 2014
Authors: Guo Ming Zhao
Acoustics is the study of the properties of sound, generation, transmission, reception and induction of disciplines, is also part of the rapid development of modern physics together an interdisciplinary.
Figure.2 Strings vibrating motion of the Helmholtz Early 20th century jazz, Indian physicist Raman pull the strings produced a mechanical device, enabling the bow to pull the strings in a balanced rate, by experiment, he observed and measured the speed of the bow, the bow contact point to the distance of the bridge, Rally of these three factors, the relationship between them is obtained, the results show that the minimum tensile pull strings with the speed of a positive correlation with the bowstring contact point to the square piano yards inverse correlation.
Also affected the nature of the strings themselves, materials and production processes, such as uniformity of the material and some other factors, the pronunciation will follow change significantly.
Affect the thickness of the timbre of the strings is obvious.
Strings are affected due to various internal and external factors, the vibration is much more complex form, there is often homophonic strings issued a non-integer multiple unnatural homonym.
Online since: October 2023
Authors: Jordi Rabassa Manzano, Irene Buj-Corral, Joaquim Minguella-Canela
As a set-up of the test bench, several preliminary experimentation measurements have been done to assess factors of interest such as sensitivity and a correlation index.
To this regard, most of the multi-material parts testing found in literature normally focus on the evaluation of dimensional properties (being it at the macro or micro scales), as well as of mechanical properties, such as strain-rate dependence and maximum yield strength [19].
At the same time, additional series of regulations regarding the determination of the mechanical properties of test samples will apply, such as ISO 178:2019 Plastics (Determination of bending properties)[24], ISO 527-1:2019 Plastics (Determination of tensile properties- Part 1: General principles)[25], and ISO 527-2:2012 Plastics.
Concerning resistivity measurements, significant differences have been detected for some of the printing parameters that have been analysed as factors of study.
Standard ISO 178:2019 Plastics — Determination of flexural properties.
Showing 13631 to 13640 of 25943 items