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Online since: February 2018
Authors: Vincent Ji, Lei Li, Yan Liu, Xiao Nan Mao
High strength, low density, and excellent corrosion resistance are the main properties that make titanium attractive for a variety of applications.
The temperature and power of sputter affect the formation of fcc-Ti.
The temperature is a key factor of the formation of fcc-Ti.
Fecht, Formation of face-centered-cubic titanium by mechanical attrition, J.
Mielczarski, Properties of titanium nitride films prepared by direct current magnetron sputtering, Mat.
Online since: October 2016
Authors: Stefan Bosse, Armin Lechleiter, Dirk Lehmhus
Main challenges include processing speed and adaptivity to system change, both prerequisites for SHM-based weight reduction via relaxed safety factors.
Among them is the need for fast, and ideally real-time, data evaluation, which can be motivated considering Load and Structural Health Monitoring (LM/SHM) as a use case and the associated aim of saving weight through structure- or material-integrated systems: If safety factors are to be relaxed based on the implementation of monitoring systems, there is a need for information to be available within a certain time interval, either with a strict upper time limit (hard real-time), or a within an average time linked to typical service intervals to guarantee operational safety of the system (soft real-time), in order to affect the necessary changes in usage patterns and thus service conditions allowing component and system to survive despite performance losses.
Questions in this respect include the issue of missing sensor data caused by failure of individual sensors, material property change induced by variations in service conditions, influence of statistical scatter of material properties or component geometry and structural damage caused, e. g., by short time events like impacts temporarily exceeding design loads and thus introducing local damage.
This approach do not require a mechanical model of the structure under test.
An decision-tree ML approach was used to predict different load cases of a mechanical structure.
Online since: March 2015
Authors: Yong Feng Luo, Xu Hong Qiang, Xiao Liu, Xi Yu Wang
In order to survive this fierce competition, properties of HSS must be thoroughly exploit.
At the meantime, American AISC LRFD proposed the load resistance factors for steel grades up to A514.
The panels were connected by welding, yet still shed light on the properties of an HSS joint region.
The initial stiffness was also affected by the variation of the plate thickness but to a lesser degree.
EC3 considers the post-ultimate stiffness as 0 and does not take factors such as strain-hardening and geometric nonlinearity into consideration.
Online since: January 2016
Authors: Sparisoma Viridi, Reza Rendian Septiawan, Suprijadi Suprijadi
Due to its stochastic properties, study of deposition process can be done by using a simulation based on a Monte-Carlo method [1,2].
The structure of the deposited material determines the properties of the film, including its mechanical strength.
Porosity is one factor that affects physical properties of the material [3] and can be used to assess the mechanical strength of the material.
By using a granular method, each cluster of particle could have different properties, so a deposition process of multiple types of particle can be obtained.
Xia, Porosity dependence of mechanical properties of solid materials.
Online since: August 2014
Authors: Jarosław Zubrzycki, Natalia Smidova
Produced synovial fluid may adjust their viscosity properties to the situation, which cannot any lubricant or oil produced artificially by man.
Created three-dimensional models can be exported to many engineering programs in compliance with all dimensions and material properties.
In the industry, this program is used to resolve issues related to the mechanics of solids and fluids, on the strength of machines and structures, taking into account many factors such as load, temperature, electrical conductivity, etc.
Table 1. presents selected physico-chemical properties of the material.
The next step is the selection of appropriate biomaterials, analysis of the mechanical properties of materials and the creation of models in the Abaqus software.
Online since: November 2016
Authors: Rustam Kaibyshev, Andrey Belyakov, A. Morozova
The grain refinement by large strain deformation can significantly enhance mechanical properties of Cu-Cr-Zr alloys without remarkable decrease of electrical conductivity [1-3].
The mechanical properties were evaluated by the tensile tests on Instron 5882 at room temperature with an initial strain rate of 3x10-3 s-1.
Mechanical properties.
Note that mechanical properties and tension behavior of the present Cu–Cr–Zr alloy and a pure Cu [12] are almost the same.
Keshavarz, Microstructural evolution, mechanical properties, and strain hardening behaviour of ultrafine grained commercial pure copper during the accumulative roll bonding process, Mater.
Online since: July 2016
Authors: Tomasz Klepka, Paweł Zaprawa, Daniel Ghiculescu
The interaction of an optotelecommunication cable and casing depends on numerous factors e.g. the type of cable, its structure, dimensions, as well as applied lubricants and sliding layers [8].
In order to obtain the required working quality of a telecommunication line throughout its working life, the cables undergo tests involving evaluation of their transmission properties and mechanical durability (i.e. resistance to stretching, bending and tearing).
Owing to the ability to reflect actual conditions, the following analyses may be conducted at the robotised testing station: kinematics and motion velocity, pressure affecting the construction, evaluation of temperature and the contact area, etc.
Online since: January 2010
Authors: Christian Klinkenberg, C. Bilgen, T. Boecher, J. Schlüter
Typical features of the CSP® process are the homogeneous structural and mechanical properties all along the strip.
Accordingly, most uniform mechanical properties along the finished hot strip width and length may be realized.
High Carbon Silicon GO / NGO Stainless 300 / 400 API Line Pipe Dual Phase (DP600) TRIP CP1000 HSLA (S600/700MC) MS IF non exposed / exposed CP (CP800) DP800 Development towards sophisticated applications: • mechanical properties • surface sensitive requirements Development towards sophisticated applications: • mechanical properties • surface sensitive requirements Figure 3: Extension of CSP® product mix Microalloyed steel grades.
Microstructures up to grade X80 exhibit uniform, fine grain sizes all over the strip thickness among with good mechanical properties, including notched-bar and DWTT toughness tests down to -60°C [7, 8].
A marked segregation line with an elevated carbon equivalent favors the formation of aligned coarse martensite islands and thus deteriorates the mechanical properties.
Online since: February 2015
Authors: Hao Ma
Analysis of Extreme High-temperature time series based on Empirical Mode Decomposition Hao Ma School of Mechanical Engineering, Shanghai Institute of technology, Shanghai 201418, China tracy_mahao@126.com Keywords: Atmospheric turbulence, Temperature time series, Empirical mode decomposition.
In this paper, considering the nonlinear and non-stationary properties of extreme high-temperature time series, we introduce Empirical Mode Decomposition to analyze the extreme high-temperature time series from 1959 to 2012 in Fengxian district of Shanghai.
The various climate factors in China, especial the extreme high-temperature, revealed complex fluctuations.
Because of special geographic position, it is affected by the urban heat island effect, which is less obvious than highly urbanized areas[2].
Due to characterizing multiscaling scale invariant properties directly, the EMD method has met a large success and has been successfully applied to many topics in the natural and applied sciences: water wave analyzing, earthquake wave analyzing, meteorology and climate studies, and biological applications, among others.
Online since: September 2013
Authors: Dong Hua Guo, Lei Peng, Heng Quan Liu
The hot-dip galvanized layer which has good adhesion properties composed with zinc layer and iron-zinc alloy layer, and has long history of application and large dosage relatively.
The impurities of aluminum ingot are the primary factor which affects the appearance quality of the hot dip aluminized layer [6].
The impurities are consisted of different components, some elements are bound to affect the infiltration and fluidity of liquid aluminum, and ultimately affect the continuity and appearance quality of hot dip aluminized layer.
The passive film is formed on the surface of the zinc, this is the passivation properties.
[2] Jintang Lu, Qiaoyu Xu, Gang Kong: Hot-dip Plating Technology and Application (Mechanical Industry Press, Beijing 2006)
Showing 18481 to 18490 of 25960 items