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Online since: April 2015
Authors: Chien Chon Chen, Shih Hsun Chen, Shih Fan Chen, Shih Hang Huang, Shea Jue Wang, Jin Shyong Lin
In order to retain excellent magnetic and mechanical properties, their shapes would be limited in small dimension, such as ribbons, wires or powders.
Mechanical Properties Firstly, Fig. 2 shows the strength dependence of the weight percentage of sodium silicate for different consolidation conditions.
There was too much coating agent in the core with 4 wt.% sodium silicate so the residual air was not a main issue affecting the Hc.
Inoue, Bulk amorphous and nanocrystalline alloys with high functional properties, Mater.
Masumoto, Mechanical properties of Fe-Si-B amorphous wires produced by in-rotating-water spinning method, Metall.
Online since: September 2014
Authors: Xiu Guang Song, Si Feng Zhang, Lin Li, Xue Feng Chen
Based on the summary and analysis of such aspects as the factors that influence durability of corroded steel bar and the impact of corroded steel bar on mechanical properties and fatigue durability of steel bar and structure, the objective which needed to be further researched was seek out to provide reference for later study.
Mechanical properties of corrosion-damaged reinforcement.
Experimental study on mechanical properties of corroded steel bars.
Experimental study on mechanical properties of corroded steel bars under high strain rate.
Digital test study of Corroded steel bar mechanical properties.
Online since: June 2014
Authors: Rustam Kaibyshev, Vladislav Kulitskiy, Damir Tagirov, Nikolay Belov
/fax: +7 4722 58-54-55; email address: tagirov@bsu.edu.ru Keywords: aluminum alloys, LHIP, mechanical properties, fatigue, casting Abstract.
The effect of liquid hot isostatic pressing (LHIP) on microstructure and mechanical properties of a high-strength cast Al-6Zn-2Mg-0.5Fe-0.7Ni alloy was examined.
Introduction Cast aluminum alloys normally have mechanical properties that are inferior to wrought products [1].
Mechanical properties.
However, the present material showed disappointed fatigue properties.
Online since: October 2011
Authors: Qing Zhang, Zhong Qiu Liu
Then the model is applied to analyze lining structures of Jinping diversion tunnels during excavation and operation processes in which high external and internal water pressure would play a dominant role in affecting the behavior of lining respectively.
Coupling research are carried out to analyze some important factors that would influence the hydro-mechanical behavior of lining and surrounding rock mass such as decreased orders of hydraulic conductivity magnitude of grouting zone, internal water pressure acting as body force and existing cracks in the lining, and the results shows that grouting zone of good quality and sufficient measurement for preventing the cracks from initiation and coalescence in the lining are important for the construction and operation of the diversion tunnels.
With such high external and internal water pressure and concrete lining itself often has many micro-cracks for some construction factors.
Mechanical Constitutive Model of Concrete and Reinforcement.
Table 1: Material Properties for Coupled Analysis Material Dry Specific Weight Compression Strength Tensile Strength Initial Void Ratio Initial Hydraulic Conductivity Rock Mass 27.5 kN/m3 1.5e+05 kPa / 0.01 0.04 m/d Concrete 25.0 kN/m3 2.5e+04 kPa 2.17e+3kPa 0.005 0.0008 m/d Rebar 78.0 kN/m3 3.1e+05 kPa 3.1e+05 kPa / / Results Seepage from outside to inside.
Online since: January 2009
Authors: Gai Fei Peng, Piet Stroeven, Ri Gao, Jiu Feng Zhang, Zhan Qi Guo
As to the relationship between fluidity of concrete and that of paste, future research can be conducted in two aspects, i.e. one is the influence of the quantity of paste in concrete, and another is the influence of fluidity of paste affected by a couple of factors.
Introduction Compared with other properties of concrete such as mechanical properties and durability, workability is measured by using test methods rather empirical, which usually lack enough scientific foundations.
Thixotropy of plain concrete and fiber concrete is caused by chemical and physical factors.
Reuse of local sand: effect of limestone filler proportion on the rheological and mechanical properties of different sand concretes.
Effect of the addition of ultrafine cement and short fiber reinforcement on shrinkage, rheological and mechanical properties of Portland cement pastes.
Online since: February 2014
Authors: Fu Chuan Huang, Man Rong Su, Xing Zhong Tang, Hong Jun Li, Zhao Xia Lu
Practical application shows that the polish has a good anti-wear, the wear properties and anti-rust properties, stable performance, and meets the needs of the chemical mechanical polishing, the rate of biodegradation more than 80%.
In addition, the polishing pad properties (such as materials and flatness, etc.) will greatly affect the polishing effect[4].
Therefore, it is necessary to highlight the anti-rust properties.
Select fungicides, consider the following factors: 1).
Under laboratory conditions, with good anti-wear, wear properties and anti-rust performance, stable performance to meet the needs of the chemical mechanical polishing. 2).
Online since: March 2013
Authors: Ge Chen, Yang Wang, Min Yu Han, Xiu Qing Zhang
Aging further increased the mechanical properties of the estruded alloy.
The low cost of this alloy, but casting under a coarse microstructure, composition fluctuation, seriously affect its mechanical properties.
Mechanical Properties.
Mechanical properties before and after the alloy extrusion are showed at Fig. 4.
So the comprehensive mechanical properties of the material were improved greatly.
Online since: September 2013
Authors: Bi Qin Dong, Qi Ling Luo, Wu Jian Long, Wei Lun Wang
The statistical models derived from the factorial design approach can be used to quantify the effect of mixture parameters and their coupled effects on fresh and mechanical properties of SCC.
By combining the advantages of UHSC and SCC, ultra high-performance concrete (UHPC) can possibly be formed which has proper workability (slump flow greater than 600 mm) and excellent mechanical properties (28-day compressive strength greater than 100MPa).
By definition, two is the number of levels of each factor investigated; four is the number of factors investigated.
Statistical models for mechanical properties With the help of Design Expert software, experimental design and analysis can be done.
Mechanical properties of prestressed self-consolidating concrete,” Materials and Structures, DOI: 10.1617/s11527-012-9989-9, Online first [2] Long, W.J, Khayat, K.H, 2011.
Online since: November 2013
Authors: Charoen Nakason, Chesidi Hayichelaeh, Anoma Thitithammawong
Results show that distribution of processing oil in the ENR/PP TPV is important because it can affect the elastomeric properties.
Furthermore, redistribution of the oil occurred upon cooling down, due to crystallization, affecting the morphological, the mechanical, and the rheological properties [5].
Mechanical properties of ENR/PP TPVs Mixing method Mechanical properties Tensile strength (MPa) Elongtion at break (%) Tension set (%) 1 2 3 8.3±0.2 8.2±0.1 7.2±0.1 339± 1.9 275±16.5 212±12.5 30.8±0.3 36.2±0.8 48.5±0.5 Table 4.
X-Ray diffractograms of ENR/PP TPVs with different mixing methods Dynamic mechanical properties Figures 1(a) and 1(b) show dynamic mechanical properties of the ENR/PP TPVs prepared with various mixing methods.
As a consequence, the TPVs prepared with mixing methods 2 and 3 provided inferior tensile and dynamic mechanical properties.
Online since: March 2015
Authors: Yu Fei Tang, Qian Miao, Ying Liu, Zi Xiang Wu, Wei Zhang, Kang Zhao
The mechanical and biological properties of bionic structure porous alumina ceramics are also characterized.
And two step freeze casting [9] is used to prepare the bionic structure in order to improve the mechanical properties.
The morphologies, porosity and pore connectivity of porous ceramic are characterized, and mechanical properties and biological properties are also investigated.
There are two factors affect the change of porosity.
Two factors are opposites, but inner radius is conducive to increase the size of the scaffold porosity.
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