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Online since: May 2012
Authors: Chao Guo, Shi Wei Xiao, Jin Song Zhang
CFG pile composite foundation stability was affected by pile spacing, pile quality, and embankment height etc.
How to analyze the interaction among above factors was a systemic project.
The effect of soils property and pile spacing on Pile-cushion-soil interaction was analyzed.
Model Parameter In order to reproduce archetype material physical and mechanical properties the similarity theory must be followed in the tests.
Because that the number of J01 strain gauge was close to the piles top where disturb factors relatively excessive, what made tests data fluctuant and error large.
Online since: January 2012
Authors: Ding Tang Wang
Wet panels have the properties of expansion with wet/hot and contraction with dry/cold.
Deformation properties between finish coats and insulation boards below can’t reach a consensus with the seasonal climates changes, so the secondary stresses are produced to cause the protecting coats to fall.
The insulation panels around the root area of mechanical fixings are damaged to leak.
The mechanical fixings are not treated with waterproof materials and circular sealant copings.
The reasons resulting in these issues are the result of common effects from various factors, such as material properties, construction techniques, and environment affection etc.
Online since: November 2006
Authors: Dong Xia Li, Ying Mei, Fang Jia, Bao Chun Jia
The mechanical properties of the steels are given as follows: The ultimate strength� b is 490 MPa, the yield strength is 343 MPa and the percent elongation� is 22%. 2.
The effect of welding repaired TIG-dressing on fatigue properties of the weld bead The fatigue life of specimen after TIG-dressed increases 100% than that hasn't been TIG-dressed.
The conclusion The imperfection in welding toe is the key factor of the fatigue life.
A STUDY OF FATIGURE STRENGTHS AND LOWER TEMPERATURE PROPERTIES OF TIG DRESSED WELDED JIONTS.
Journal of Mechanical Strength. 2005,27(1): A126~A129
Online since: March 2020
Authors: John Ojur Dennis, Hasnah Bt Moh’d Zaid, Fahad Usman, Asfand Yar, Ridwan Tobi Ayinla
Accordingly, the excellent properties of AC made from palm shell made it a considerable candidate for electrode material for Supercapacitor application.
Various factors such as activation agent, activation time, activation temperature, particle size, activation method, and nature of starting material affects the performance of activated carbon as electrode material of EDLC.
Table 1 present the properties of activated carbon associated to their specific application.
Desirable factors of activated carbon for specific application [10] Application Properties Water treatment · Large surface area, Fast adsorption rate, Wide and stable micropores Gas/pollutant adsorption · Specific gas compatibility, large surface area, high reactivity with target gas/pollutant.
The dry PKS was grinded with a mechanized granulator at the mechanical engineering workstation into 5mm particle size.
Online since: May 2020
Authors: Lina Kieush, Volodymyr Bochka, Artem Sova, Oleksandr Hryshyn, Alisa Dvoiehlazova
The inequality of the change in the capillary impregnation height for each composition of the blend can be explained by the number of factors, namely, the instability of the surface properties of the materials within the composite, the change in the effective radius of the capillary, and others.
The influence of the mineralogical composition of bonds on the sinter strength properties with different basicity.
The influence of fine particles of binding materials on the strength properties of hardening backfill.
The study of the mechanical properties of the main components of iron ore sinter.
Effect of adding limestone on the metallurgical properties of iron ore pellets.
Online since: February 2018
Authors: Guang Bao Mi, Liang Ju He, Pei Jie Li, Xian Ye Liang
The first category was the direct method of using wear as a material property of the model.
The Archard model is widely used in the numerical calculation of wear due to its linear properties.
There are many factors that affect the wear rate: (i) the proportion of the surface asperity particles, (ii) the ratio of the deformation volume before and after wear (iii) is proportional to the number of cycles of the contact load (iv) in different processes Percentage of abrasive particles (v) Wear due to periodic changes in stress [8].
The first step analyzes the normal load of 5N at the top of the pin, The elastomeric material properties of the pin affect the contact surface and the contact stress; the second analysis step apply 40rad/S rotation speed at the center of rotation of the disc, wear analysis is also carried out in this analysis step.
A simulation method of thermo-mechanical and tribological coupled analysis in dry sliding systems ☆[J].
Online since: February 2012
Authors: Bao Quan Mao, Chuan You Wang, Dong Ming Dai, Yong Liang Wu, Xin Liang Liu
Introduction When the actual equipment test, due to the random factors of the inherent factors in the product, manufacturing, assembly and the natural environment, each test result is different.
However, the existing virtual prototyping of equipment is analyzed under the certain factors, neither taking the size of manufacturing and assembly, and the discrete structural properties into account, nor considering the randomn of the input load.
So considering the impact of random factors can reflect the true nature characteristics of the equipment, when in the virtual test of the equipment.
Shooting process in the bore is affected by many random factors, not only there is the random interference in the firing process environment, but also in the powder itself.
Fig.1 Pressure curves of the cluster lead chamber Machine Gun RCWS Random Simulation Results Analysis When the bullet flys off the muzzle, the displacement, velocity and angular of the muzzle vibration are the important factors to affect the firing density.
Online since: January 2016
Authors: Zhi Qing Hu, David Allanson, Hao Lin Li, Xun Chen, Hao Yang Cao, James Wharton
The grinding depth not only affects the structural feature depth but also the length and width of the surface structure.
Compared to conventional smooth and untextured surfaces, structural texture surfaces show many advantageous properties [2, 3].
Many biological examples of textured surfaces present many beneficial properties that improve the performance of surfaces, especially in surface drag reduction and frictional reduction.
Wakuda et al [12] studied the frictional properties of a silicon nitride ceramic mated with hardened steel through pin-on-disk tests and verified the micro-surface texture is an effective key to friction reduction.
The type of interaction between the laser beam and the material being ablated depends not only on the thermo-optical properties of the work material for a given laser (wavelength) irradiation but also by the appropriate choice of the laser parameters used.
Online since: October 2005
Authors: W.H. Huang, Jia Lin Sun, J. Hu, X.J. Li, Y.H. Chen, X.F. Zhou
Mechanical properties of DNA, for example the elastic modulus, are of vital importance for its biological function.
Introduction The mechanical properties of DNA, in particular the modulus, are very important for its biological function.
During the recent decades, various physical techniques are used widely in measuring the mechanical properties of DNA at the molecular level [2].
Fig.1 is the schematic diagram of the vibrating mode scanning polarization force microscopy system, which is used here in measuring topography and mechanical properties of DNA.
The properties of the harmonic oscillation are determined by the effective mass m, the spring constant of the cantilever kc and the damping coefficient γ.
Online since: February 2013
Authors: Fu Sheng Pan, J. Tan, C.J. Li, J.F. Wang, J. Eckert
They showed that metastable thermodynamic nature and the particle surface topography are the major factors controlling the chemical performance of the metallic glass [9, 10].
The crystallization process is very important for the practical applications of amorphous materials, the properties of which are strongly affected by the crystallization process [14].
The detailed mechanical properties have been reported elsewhere [18].
Eckert, Effect of Fe addition on glass forming ability and mechanical properties in Zr–Co–Al–(Fe) bulk metallic glasses, Mater.
Zhang, Effect of Fe substitution on the crystallization and mechanical properties of Zr55Cu30Al10Ni5-xFex alloys, Mater.
Showing 16871 to 16880 of 26166 items