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Online since: October 2024
Authors: Ákos Meilinger, Marcell Gáspár, Sahm Alden Abd Al Al
The cooling rate in RSW can vary widely depending on several factors, including material properties, thickness, welding parameters, and environmental conditions.
The temperature profile, and especially the cooling rate, will influence the microstructure evolution in the WN and the HAZ, ultimately affecting the weld's mechanical properties [14].
This period is vital because it significantly affects the microstructure and, therefore, the mechanical properties of the welded joint [13].
The mechanical properties of the Docol MS1400 steel [21].
Smaller and more refined grains generally yield better mechanical properties in steel.
Online since: September 2021
Authors: Yuri N. Khakimullin, Dilyara R. Khisamieva, Rezeda Yu. Galimzyanova, Maria S. Lisanevich
Effect of the technological additives on the properties of recycled polyolefins.
Polylactic acid: Synthesis, properties and applications.
The ternary blends of tps/pbat/pla films: A study on the morphological and mechanical properties.
I: Thermal, mechanical and morphological properties.
Processing of poly(lactic acid): Characterization of chemical structure, thermal stability and mechanical properties.
Online since: September 2016
Authors: Nikolay A. Feoktistov, D.A. Gorlenko, Konstantin N. Vdovin
These works illustrate the effect of chemical composition, alloying, and modification of the melt containing high-manganese steel on mechanical and performance properties.
The effect of the parameters of the cast high-manganese steel primary structure on the level of mechanical and consumer properties of castings has been also little studied.
Moreover, it will depend on the size of the casting or its individual parts, weight, mould wall thickness, and some other factors.
This affects the cast structure parameters and levels of properties.
Wearability of high-manganese steels in the as-cast state is caused by two factors.
Online since: December 2012
Authors: Chun Hua Wang, Hui Qu
However, in fact it is not so, affected by all kinds of factors, these parameters all have the uncertain factors.
Especially the bearing’s equivalent dynamic load, it is affected to some extent by the working condition, installation level, ubrication status, accuracy of manufacture, etc. factors, these factors are all vague concept.
Among the factors, PM is affected by working conditions and it has biggish discreteness, thus it has the most notable fuzziness.
Assume there are m factors affecting average equivalent dynamic load, factor set can be expressed as M={u1,u2,u3,…,um}.
According to the differences between properties of affection factors and affection degree, the factors can be divided n levers .
Online since: September 2016
Authors: Wiem Toumi Ajimi, Sylvain Chataigner, Yannick Falaise, Laurent Gaillet
It gives more particularly decrease factors for the ultimate tensile strength, the characteristic yield stress and the elastic modulus with temperature up to 1200 °C.
The average results and the standard deviation are given in Table 1 for each studied case and for the three mechanical properties: ultimate tensile strength Rm, characteristic yield stress Rp0.2 and the elastic tensile modulus E (determined accordingly with [2]).
Obtained experimental mechanical properties for steel rebars Maximum temperature, in °C d, in mm Rm, in MPa Rp0.2, in MPa E, in GPa 20 12 590.5 +/- 0.9 535.0 +/- 3.4 195.5 +/- 5.7 40 12 587.6 +/- 3.8 534.5 +/- 3.6 211.5 +/- 20.7 100 12 572.2 +/- 0.7 518.1 +/- 1.6 229.8 +/- 9.8 140 12 573.1 +/- 0.5 518.2 +/- 2.3 217.1 +/- 21 20 16 573.2 +/- 0.7 504.5 +/- 2.0 197.4 +/- 8.7 140 16 551.7 +/- 2.9 482.5 +/- 6.2 191.4 +/- 6.0 Experimental investigations on the adherence between concrete and rebars State-of-the art.
It gives more particularly decrease factors for the ultimate tensile strength, the characteristic tensile stress and the elastic modulus with temperature up to 1200 °C.
Obtained experimental mechanical properties for prestressing wires Maximum temperature, in °C Rm, in MPa Rp0.1, in MPa E, in GPa 20 2110 +/- 12 1867 +/- 3 226.1 +/- 5.0 40 2095 +/- 11 1854 +/- 15 226.3 +/- 0.9 100 2048 +/- 3 1793 +/- 4 224.5 +/- 3.4 140 2015 +/- 15 1726 +/- 14 213.4 +/- 1.1 Experimental investigations on the relaxation of prestressing steel wires State-of-the art.
Online since: October 2014
Authors: Xin Zhang, Bai Lin Li, De Xin Kong, Hai Jiang
The reason why is because this concentration range within the range of concentrations obtained under the stress of the smallest electric casting, good mechanical properties, the upper limit of the available current, high current efficiency, fast deposition rate.
In order to simplify the analysis of variance table simplicity, combined into a significant factor affecting the performance of the table, in order to observe and analyze.
Table 4 Four significant factors affecting the performance of each case Significant factors on performance Stress Elongation Deposition rate Tensile strength The current efficiency Microscopic strain Dislocation density Current Density 0.035 0.034 0.031 0.041 0.044 0.039 0.037 Nickel chloride 0.893 0.747 0.048 0.913 0.052 0.485 0.792 Sodium dodecyl sulfate 0.061 0.060 0.965 0.074 0.995 0.042 0.044 Saccharin 0.027 0.044 0.323 0.038 0.174 0.035 0.041 The above table shows that the impact of current density on the above properties are a dominant performance that is significantly affected; nickel chloride on the deposition rate, and current efficiency significantly affected; sodium dodecyl sulfate on the deposition rate, the current efficiency is not affected significant impact on the tensile strength is weak, significant performance impact on the rest; saccharin deposition rate, no significant effect on the current efficiency, a significant effect on other properties.
SPSS software through a single factor multivariate analysis of these two properties can be obtained on the mean nickel chloride, Fig.5 shows the impact on them.
SPSS software through a single factor multivariate analysis available on the above properties mean sodium lauryl sulfate, Fig.6 shows the impact on them.
Online since: September 2014
Authors: Feng Xu
Study on the structure and properties of RCA concrete and its application properties.
Microstructure analysis of RCA Cement concrete is a multiphase heterogeneous materials composed of cement paste and aggregate, the interface between the different phase composition and nature has the important influence on the physical, mechanical properties[2].
At the same time, water and other scholars research results show that, significant effects of the surface state of the recycled aggregate on Microstructure and mechanical properties of RCA concrete.
properties and control of RCA aggregate RCA aggregates is an important part of RCA concrete, its nature has great influence on the properties of RCA concrete, so it is necessary to explore the related physical, mechanical properties.
Losangeles abrasion test and aggregate crushing test showed that the wear rate of RCA is higher than that of NA[10], this is due to the decrease of mechanical properties of all kinds of factors which influence the RCA coated RCA cement mortar and its use in the process.
Online since: October 2015
Authors: Štefánia Salokyová, Tibor Krenický
The article is focused on the evaluation of the effects of factors of the high-speed hydro-abrasive stream technology during the splitting of construction steels 12 050 and 11 523 through a factor experiment.
The experiment examined the effect and significance of two selected factors (type of material and movement speed of the technological head).
The research in this field is focused mainly on understanding the mechanism of the removal [1-3] and optimization of factors, which in their mutual combination affect the quality of the surface [4,5].
Except for many experimental studies focused on understanding the factors affecting the performance of the splitting process, a lot of studies were focused on modeling the process between the stream and splitting of the material for the purpose of understanding the physical background [6,7].
Gembalová, Determining the physical - mechanical properties of the material from its destruction by water jet, Dissertation, VŠB-TU, Ostrava, 2010 (in Czech)
Online since: October 2010
Authors: Song Qing Zhu, Fei Hao, Jin Fei Shi
Conventional and microwave heating performance of modified asphalt recycling test including the rutting test, the trabecular cold bending test, the Marshall immersion test, the freeze-thaw split test, and the splitting strength mechanical properties were test.
Introduction Asphalt pavement in the traffic load and heat, oxygen, light and water under the action of natural factors such as, chemical changes, the aging of asphalt on the road surface, mainly referring to the aging of asphalt pavement material aging and asphalt aggregate of refinement.
Rutting test can fully simulate driving wheels asphalt actual situation of the trial, you can by changing the temperature, load, specimen dimensions, molding conditions and other factors to simulate actual road conditions.
In view of this, this study measured by test mixture when the bending failure at -10 ℃ to evaluate the mechanical properties of asphalt mixture at low temperature cracking resistance.
Mechanical Properties of Asphalt Mixture This study measured by splitting test recycled asphalt mixture mechanical properties.
Online since: March 2014
Authors: Dong Feng Liu, Zhi Cai Zhou, Ge Wang
With FA (factor analysis), the features of the contamination can be represented by two feature factors, large size particles factor and small size particles factor.
Ignore this process not only can result in equipment failure, and will seriously affect the service life of equipment.
These four sizes decide the property of the common factor 1, which hence could be explained as the large particle factor with a contribution rate 45.4%.
There are just some different from the contributions and the influence on the system of two factors.
Chinese Journal of Mechanical Engineering, Vol. 39 (2003) No.9, p.58
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