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Online since: July 2005
Authors: Kwang Seon Shin, Hwa Chul Jung, Ye Sik Kim
It offers the castings with high integrity and less porosity and allows subsequent heat treatments for enhancement of mechanical properties.
These rheological properties of the slurry make the SSP as a unique and effective process for the near net-shape casting with enhanced mechanical properties.
The reduced porosity level in the SSP components, which allows subsequent heat treatments for improved mechanical properties, is another attractive advantage.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloy components requires reliable production of the high quality Mg billets for the subsequent SSP.
One of the most important factors in casting Mg alloy billets is the safety of the process.
Online since: May 2012
Authors: Jun Hong Zhou, Di Wu, Shun Hua Zhou
Results show that the buoyancy caused by grouting pressure is the dominating factor to bring about segments uplift, thus the relationship between the soil properties and the anti-uplift characteristics, the relation curves of soil modulus and the maximum amount of floating upward are deduced [1].
Analyze the factors affecting the uplift of shield tunnel lining through finite element method(FEM), such as the physic-mechanical properties of stratum material, and the properties of grouting material, the paper indicates that the method of using the grouting materials which have a property of low early strength and large fluidity is good for control the segments upward moving(however, the segments uplift during the construction and the later settlement should be considered) [2].
Zhengnan Shen analyze the reason of segments uplift through the factor of the physic-mechanical of stratum material, grouting and the shield posture, methods of controlling the segments uplift are provided [4].
After considering the two factors of size difference in tenon and deviation in joint handhole, can get the allowed maximum amount of slab staggering for structure allowed in Ningbo metro line 1 is 4 mm.
For N, the conclusion in this paper is that the number of the float stable ring from shield tail is 14, however, the value of N is affected by many factors(geological conditions and the construction parameters), if these factors change, float stable ring should be fitted again.
Online since: April 2023
Authors: Thritima Sritapunya, Apaipan Rattanapan, Pornsri Sapsrithong, Surakit Tuampoemsab
Murugesan et al. studied the mechanical characterization of alkali treated Sansevieria cylindrica fibers–natural rubber composites, focusing on various factors that affected the properties of natural rubber composites and their applications in different sectors for sustainable development [5].
Jacob et al. studied the mechanical properties of sisal/oil palm hybrid fiber-reinforced natural rubber composites.
They reported that adding bonding agents gave shorter curing time and enhanced mechanical properties [7].
Effect of Modified Jute Fiber on Mechanical Properties of Green Rubber Composite, Energy Procedia. 56 (2014) 641 – 647
Zhou, Effect of surface modification of bamboo cellulose fibers on mechanical properties of cellulose/epoxy composites, Compos.: Part B. 51 (2013) 28-34.
Online since: March 2008
Authors: Hong Bin Liu, De Jin Hu, Da Ping Wan
The Effects of Laser Texturing Parameters on Wear Properties of Rollers with Fractal Geometry Hongbin Liu1,a , Daping Wan 1,b and Dejin Hu1,c 1School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai, China, 200030 ahunking2008@yahoo.com.cn; bwdp@sjtu.edu.cn; cdjhu@sjtu.edu.cn Keywords: Laser texturing, Fractal geometry, Friction and wear, Surface roughness Abstract.
The roller is major component for the production of high-quality steel and the service life of the roller is largely determined by the wear properties.
Thus, the processing parameters are linked with the wear properties of laser textured surface, which will provide better guidance for the processing.
The processing parameters of laser texturing are linked with the wear properties of roller surface based on the relationship between the fractal parameters and surface roughness.
Yang: Chinese Journal of Mechanical Engineering, Vol.39 (2003) No.7, pp.107-110.
Online since: February 2013
Authors: Zhen Min Ma, Yun Yun Luo, Yun Zhi Fang, Ling Ling Li, Yu Song Hou
As a result, industrial and agricultural production and water for living are affected.
It can reflect the weight of different evaluation factors on the quality of groundwater, extrude maximum pollution factor and reflect objective conditions of groundwater quality.
Explanation percent of extracted factors is general required to exceed 85% [5].
Therefore, the first three factors were extracted to as the main factors.
Nickel is used for mechanical plating to protect the underlying metal from corrosion depending on its anticorrosion and antioxidant properties.
Online since: November 2025
Authors: Iuliana Duma, Virginia Socalici, Raluca Faur, Laurentiu Zgripcea, Corneliu Birtok Baneasa
Selection of filler material is key factor of the weld, with major impact over mechanical properties of assemble, stability at high temperature and corrosion resistance.
Realization of Prototype Choosing of parent materials From mechanical point of view, ram must have high mechanical properties at high temperature.
Another factor which requires preheating is dimension of welded parts (90mm diameter).
Taking into account these factors, result a preheating temperature of 360 ℃.
This type of alternation (zip shape) is optimal in terms of the mechanical strength of the joint.
Online since: March 2014
Authors: Nikolai Kashaev, Volker Ventzke, Anne Groth, Manfred Horstmann, Stefan Riekehr, Josephin Enz, Sergey Chupakhin
In the research presented, the mechanical properties with regard to fatigue and fatigue crack propagation of laser beam–welded AA2198 joints and four-stringer panels were investigated.
In this study, the base material (BM) properties were investigated.
Details on the process parameters and their influence on the microstructure and mechanical properties of the laser beam-welded aluminum alloy can be found in [12-14].
Mechanical properties The tensile test results for butt joints and hoop-stress test results for T joints show that there is a reduction of the ultimate tensile strength of approximately 25 % due to LBW (Figs. 4a and 4b).
The AA2198 BM shows noticeable anisotropy of the fatigue properties (Fig. 5).
Online since: April 2007
Authors: Qi Zhou, Jian Jun Liu, Qin Ma, Cui Xia Wang, Shu Jun Zang
The relations among the tribochemical effect factors are as follows: the microstrain and the effective temperature factor increase with the decrease of the crystallite size.
Since 1980's, people have recognized MoSi2 as a kind of potential high-temperature structure materials, whose preparation of mechanical alloying (MA) has caused extensive concern [3].
So as to affect the micro and the macro structure of materials [3,4].
Grain size, microstrain and effective temperature factor of powder were selected as the tribochemical effect factors.
The value of Beff is decided by the intrinsic properties of the material, such as bonding, crystal structure, density and surface roughness etc.
Online since: June 2008
Authors: I.S. Cho, J.U. Park, H.G. Suk
In order to secure the uniformity and to reduce the scattering of torque coefficient value, which is a decisive factor in the quality of high tension bolt nut and washer sets, effort is required from the manufacturer to standardize manufacturing process and to continuously improve the quality.
This test focuses on the manufacturing of high quality, high tension bolts, by understanding experimentally how the size change in the manufacturing process affects the torque coefficient value and axial force, and applying it to manufacturing.
Although, it is shown that their effect is less than that of lubrication of nuts, mechanical properties, etc; they are, nevertheless, the primary factors of scattering.
It was expected that the scattering of notch size affected the axial force significantly; but, it was proved that the fracture torque of notch part, which has direct relation with real joining axial force, has no correlation with notch size.
Online since: January 2022
Authors: Solomon Idowu Adedokun, Mukaila A. Anifowose
The software analyses the effect of factors and their relationship with other factors by variation of values in parallel.
Also, the optimum value (28.85% ISN) predicted through the software proved reasonable reduction in granite usage for concrete production without affecting the hardened properties (CS, STS and FS) of the concrete.
Islam, Use of slag as coarse aggregate and its effect on mechanical properties of concrete, Proceedings of the 3rd International Conference on Advances in Civil Engineering, CUET, (2016) 475-479
Atoyebi, Physical and mechanical properties of cement-bonded particle board produced from African balsam tree (Populous Balsamifera) and periwinkle shell residues, Results in Eng. 6 (2020) 100126
Ayo, Effect of guinea corn husk ash on the mechanical properties of lateritic concrete, IOP Conf.
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