Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: October 2012
Authors: Long Jiang, Jian Hui Sun, Wan Shun Wang
Zhenhua Zhang, et al. put forward the research ideas and methods of dynamic deformation and early-warning monitoring indicators in excavation process based on design safety factors and failure mode, and applied them to determining the deformation and early-warning monitoring indicators.
External Deformation Property.
Deep Deformation Property.
The overall deformation is mainly affected by seasons and rainfall, in a stable condition.
Plastic strain contours and lateral deformation contours of the model are separately shown in Figure 3 and in Figure 4, and lateral deformation curves with different reduction factors in Figure 5.
Online since: January 2005
Authors: R.M. Denys, Wim De Waele, Patrick de Baets
The procedure involves prediction of the maximum tolerable defect size as a function of the applied remote plastic strain and the actual pipe and weld metal properties.
Introduction Past experience has demonstrated that empirical correlations between wide plate or full-scale test results and the material properties (toughness and tensile properties) can be used to develop defect acceptance criteria [1,2].
This paper describes a defect assessment methodology that takes account of key variables affecting the strain limit.
The toughness properties were determined at the CWP test temperature.
This illustrates that the knowledge of the actual material properties is a crucial factor in a strain based defect assessment [5].
Online since: April 2012
Authors: Zhi Yong Zhang, Dong Hua Guo, Xue Feng Ma, De Wen Ma
The quality of the substrate plate materials is one of the key factors to ensure that the traffic sign play its functions.
Physical and Chemical Properties The physical and chemical properties of the ferritic stainless steel-related the traffic sign substrate plate mainly contain the mechanical properties, density, overall load and corrosion resistance in four areas.
Mechanical Properties.
Compared to Table 2, the mechanical properties of the ferritic stainless steel can meet the application requirements as the traffic sign substrate plate compared to the traditional metal materials.
The key affecting the welding quality is in presence of the C, N, S, P, O and other impurity elements in the ferritic stainless steel.
Online since: October 2014
Authors: Xiu Hua Zheng, Shi Zuo Zhan, Xu Zhang
Study on mechanical properties and impermeability of rubber concrete Xiuhua Zheng1,a*, Xu Zhang2,b, Shizuo Zhan1,c 1School of Transportation Science and Engineering, Harbin Institute of Technology, P.R.
Abstract: The effects of the size and volumetric content of rubber powder on properties of concrete, including flexural strength, compressive strength and permeability, were studied in this paper.
By mixing the rubber powder with the cement concrete as fine aggregate can fill concrete pores, reduce the formation of internal micro cracks, enhance the absorption of strain energy, and improve the toughness properties of concrete [2], greatly improve the toughness, impact resistance and seismic performance of concrete.
It will become the main factor that affects the strength of concrete.
Zheng: Experimental study on dynamic properties of rubberized concrete, JournalofTongji University(Natural Science Edition). 36(9) (2008), p. 1186-1190
Online since: February 2012
Authors: Yu Zhang, Zheng Lun Wang, Zhi Xiang Wang
Determine the Optimal Design.As the complexity of the welding process, there are many factors affecting welding residual stress.The welding current, arc voltage, welding speed are selected as the main factors, and each factor has three levels.
Factors and levels of orthogonal experiment are as shown in Table 5.
In this paper, we take the maximum longitudinal residual stress as an index, based on three factors and three levels of orthogonal table, inacordance with welding current, arc voltage, welding speed of the main factors affecting longitudinal residual stress , each factor with three levels.
The selected data have been range analyzed ,the smaller of assess index value, the greater of the priority factors.
Journal of Materials Science and Engineering , 2011 (5):570-576 [5] ZOU Dening.Influence of Heat Treatment on Mechanical Properties of 2205 Duplex Stainless Steel Welds [J].Chinese Journal of Mechanical Engineering, 2011 (2):85-89 .
Online since: August 2019
Authors: A. Binnaz Hazar Yoruç, Volkan Uğraşkan, Abdullah Toraman
One of the major factor affecting the performance of the composite is good interaction between the matrix and reinforcement materials.
There are, however, various factors that affect the mechanical properties of composites such as fiber and matrix types, fiber loading, fiber geometry (length, diameter, aspect ratio), fiber distribution in the matrix and interface adhesion between fiber and matrix [80]. 5.1.5 Compression Molding Compression molding is one of the oldest polymer processing techniques and is widely used in the molding of plastics and composites.
The mold closing speed and mold temperature are key factors that affect process performance and product quality.
The mechanical properties of some natural fibers are shown in Table 7.
Quaiyyum, Mechanical properties of polypropylene composites: A review.
Online since: November 2010
Authors: Bo Zhao, Jin Xue Xue
Its mechanical properties are shown in Table 2.
Table 2 Mechanical properties of nano ZrO2 Parameters Vickers hardness [GPa] Elasticity modulus [GPa] Flexural strength [MPa] Fracture toughness [MPa·m1/2] Density [g·cm-3] Pyroconductivity [m·K] Specific heat [Kg/K] Poisson's ratio Value 12 360 700 9.3 6.2 2.1 610 0.27 Grinding Temperature Testing Scheme Infrared radiation and infrared thermography method are sensitive to environmental impact and other factors, so the artificial thermocouple wire clip temperature measurement method was used in our experiments as shown in Fig.2 [2-3].
The wheel speed and dressing depth are secondary influencing factors.
Feed rate and ultrasonic power are the most important factors influencing the grinding temperature.
Wheel speed and dressing depth are secondary factors.
Online since: May 2020
Authors: Shinichi Hata, Yukihide Shiraishi, Takahiro Yoshizumi, Satoshi Hoshino, Mio Gotsubo, Naoki Toshima
The addition of inorganic materials with high thermoelectric properties is a popular approach to modulate the performance of carbon nanotube (CNT), but, the representative hybridization of CNT and toxic Te or Bi is not practical considering safety.
Here, we report a CNT film including charge-transfer complex nanoparticles, which has higher generality and thermoelectric properties.
The thermoelectric properties of the composite films prepared from acetone or acetonitrile with low solubility for TTF-TCNQ are superior to SGCNT, and their PF values are 28.9 µWm-1K-2 and 35.5 µWm-1K-2.
This reveals that the solvents affect greatly the dispersion state of TTF-TCNQ in SWCNTs, i.e., a nano-sized TTF-TCNQ occurs when the solvent is NMP. 
We demonstrated that this affects the size of the charge transfer complex TTF-TCNQ is better for nanoparticles than for bulk, and that TTF-TCNQ is a better carrier promoter.
Online since: January 2013
Authors: R. de Lieto Vollaro, A. Vallati
This depends on many factors: soil characteristics, moisture, installation mode etc.
In reality, however, the thermal resistance of the soil depends on many other factors.
Among the most important factors are the particle size characteristics, the lack of homogeneity and the water content.
The materials considered in the simulations had the following physical properties: Table 1 - Characteristics of the materials used in the simulations.
Thermal properties of soils.
Online since: July 2011
Authors: Bi Wu Huang, Zi Xiang Weng, Shi Min Liu, Wei Qing Chen
Some properties of the photosensitive resin were investigated.
SLA part accuracy is a direct result of the resin properties, and a low volumetric shrinkage resin that is cured possesses a high accuracy for its fabricated part.
It has now been found that the photosensitive resins of epoxy-acrylate hybrid systems can be used for SL process, and the photosensitive resins are distinguished by a very low viscosity, a very low shrinkage, a very low curl factor and good mechanical properties in the green state and after full curing.
While glass transition happens to polymers, their physical properties will make abrupt changes, especially mechanical property, their tensile modulus will change the first or second power of ten so as to make polymers turn from stiff solid to soft elasticity, which totally changes the applied properties of polymers.
The experimental results showed that the photosensitive resin possesses good properties.
Showing 9251 to 9260 of 26166 items