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Online since: January 2019
Authors: Jun Li, Zhang Xu, Yi Jin Zeng, Shi Dong Ding, Wei Lian
As shown in Table 1, the casing deformation has been affected.
The results of the researches show that many main research factors affect the casing stress.
It is believed that casing deformation is affected by many factors.
Based on the cementing quality, Li Qin[5] analyzed the influence of engineering factors such as the loss of the cement, casing eccentricity and caliper on the casing deformation.
It is believed that the shale reservoir slip shear is the main cause of casing deformation, and the mechanical properties of the cement sheath are of little effect.
The results of the researches show that many main research factors affect the casing stress.
It is believed that casing deformation is affected by many factors.
Based on the cementing quality, Li Qin[5] analyzed the influence of engineering factors such as the loss of the cement, casing eccentricity and caliper on the casing deformation.
It is believed that the shale reservoir slip shear is the main cause of casing deformation, and the mechanical properties of the cement sheath are of little effect.
Online since: December 2014
Authors: Xiao Cun Song, Yan Fei Chen, Zheng Qiang Zhu
The thermal properties of the joined metallic glasses were the same as that of the parent metallic glass.
The metallic glasses show excellent physical, chemical and mechanical properties [2] due to its unique structure compared with conventional crystalline alloys, such as high stiffness, high strength, high wear and corrosion resistance, good soft-magnetic properties, which means bulk metallic glasses have widely potential applications.
The result reveals that the metallic glasses before and after ultrasonic welding have the same thermal properties.
The factors affecting sufficient atomic distance are the surface oxide films and contaminants, the roughness of the bonding surface.
The thermal properties of Fe78Si9B13 metallic glass were maintained
The metallic glasses show excellent physical, chemical and mechanical properties [2] due to its unique structure compared with conventional crystalline alloys, such as high stiffness, high strength, high wear and corrosion resistance, good soft-magnetic properties, which means bulk metallic glasses have widely potential applications.
The result reveals that the metallic glasses before and after ultrasonic welding have the same thermal properties.
The factors affecting sufficient atomic distance are the surface oxide films and contaminants, the roughness of the bonding surface.
The thermal properties of Fe78Si9B13 metallic glass were maintained
Online since: March 2010
Authors: Jian Ping Lin, Qiao Sheng Hu, Dan Ying Xing, Ke Chen
Efforts have also been
paid to improve TWB formability which focuses on the factors such as welding technologies, the
thickness of parent metals as well as stress differences [9, 10].
Our previous work has shown that the integrated strength, which is affected by material properties and thicknesses, can be used as a combined index to evaluate the formability of TWB [12].
Material properties used in the model are listed in Table 1.
The TWB used here is made up of base metals with different material properties.
From the simulation and experiment results, it was found that: 1) The uneven deformation between two sides' base metals in the forming process is possibly a main factor to degrade the formability of TWB; while one major cause of the uneven deformation can be the discrepancy of integrated strength which is consisted of materials properties and thickness. 2) The discrepancy of integrated strengths on base metals can affect both cracking trend and cracking type.
Our previous work has shown that the integrated strength, which is affected by material properties and thicknesses, can be used as a combined index to evaluate the formability of TWB [12].
Material properties used in the model are listed in Table 1.
The TWB used here is made up of base metals with different material properties.
From the simulation and experiment results, it was found that: 1) The uneven deformation between two sides' base metals in the forming process is possibly a main factor to degrade the formability of TWB; while one major cause of the uneven deformation can be the discrepancy of integrated strength which is consisted of materials properties and thickness. 2) The discrepancy of integrated strengths on base metals can affect both cracking trend and cracking type.
Online since: April 2015
Authors: Hui Long, I.S. Al-Tubi, M.T.M. Martinze
Investigation into root causes of key gear failure modes will be essential to identify critical operational conditions and important factors affecting the failures.
Their study concluded that the key factors over the number of load cycles necessary for micropitting occurrence.
Details of gear parameters, material properties, lubricant properties are given in Al-Tubi and Long (2012) [14].
Such a smooth surface is one of the most important factors in micropitting resistance [13].
J, Assessment of the factors influencing micropitting in rolling/sliding contacts, Wear, 258 (10) (2005) 1510–1524
Their study concluded that the key factors over the number of load cycles necessary for micropitting occurrence.
Details of gear parameters, material properties, lubricant properties are given in Al-Tubi and Long (2012) [14].
Such a smooth surface is one of the most important factors in micropitting resistance [13].
J, Assessment of the factors influencing micropitting in rolling/sliding contacts, Wear, 258 (10) (2005) 1510–1524
Online since: July 2011
Authors: Hui Xia Feng, Yi Wang, Ting Zhang, Shu Rong Yu
Major factors affecting the desulfurization such as weight ratio of CaO to total, types of modifiers, desulfurizer particle size, bed temperature were investigated.
In this study, a kind of new desulfurizer, made of ATP and CaO, was prepared, and its properties were studied.
Determining the properties of the CaO/ATP desulphurizer.
Electrochemical Properties of Na-Attapulgite.
Preparation and properties of polypropylene/org-attapulgite nanocomposites.
In this study, a kind of new desulfurizer, made of ATP and CaO, was prepared, and its properties were studied.
Determining the properties of the CaO/ATP desulphurizer.
Electrochemical Properties of Na-Attapulgite.
Preparation and properties of polypropylene/org-attapulgite nanocomposites.
Online since: March 2013
Authors: Peng Gao, Guo Xin Zhang, Ze Zhong Zhang, Nai Wang, Zhong Xia Yuan
So, with the influence of the long-term vehicle loads and many other factors, engineering properties of the compacted loess roadbed are changes gradually, finally causes the deformation and destruction of roadbed.
Based on the focus of various specific problems, the key factors of vehicle dynamic load affecting the dynamic stress of subgrade should be emphatically considered.
Because of different mechanical properties of different pavements, different models in the light of actual situation are established to discuss the mechanical properties, as shown in figure 14-16.
The main affect factors of compacted loess subgrade destruction are subgrade degree of compaction, moisture content and dynamic driving load. 2.
Influence of Compactness and Water Content on Mechanical Properties of Compacted Loess[J].
Based on the focus of various specific problems, the key factors of vehicle dynamic load affecting the dynamic stress of subgrade should be emphatically considered.
Because of different mechanical properties of different pavements, different models in the light of actual situation are established to discuss the mechanical properties, as shown in figure 14-16.
The main affect factors of compacted loess subgrade destruction are subgrade degree of compaction, moisture content and dynamic driving load. 2.
Influence of Compactness and Water Content on Mechanical Properties of Compacted Loess[J].
Online since: October 2013
Authors: Chi Liu, Jin Xing Lai, Quan Liu
Xiao [20] analyzes the factors affecting the upward moving of shield tunnel by finite element method, such as the physico-mechanical properties of stratum material, the properties of grouting material, and provides the policies and measures to control the upward moving of shield tunnel segments in the construction process.
Haack [22] researches the influence factors of tunnel safety and puts forward the structure arrangement of the tunnel affecting the safety of operating tunnel lining structure.
Zhang and Fang [24-25] make statistical analysis for the accidents of metro operation in the world, and analyze the security problem of urban underground and the factors affecting the safety.
In order to establish an index system of effective safety assessment, all factors of structural safety concerning the safety assessment of iron lining structure should be made clear, and the role of these factors in the whole process should also be analyzed.
Study on mechanical model of shield tunnel lining structure with cracks, J.
Haack [22] researches the influence factors of tunnel safety and puts forward the structure arrangement of the tunnel affecting the safety of operating tunnel lining structure.
Zhang and Fang [24-25] make statistical analysis for the accidents of metro operation in the world, and analyze the security problem of urban underground and the factors affecting the safety.
In order to establish an index system of effective safety assessment, all factors of structural safety concerning the safety assessment of iron lining structure should be made clear, and the role of these factors in the whole process should also be analyzed.
Study on mechanical model of shield tunnel lining structure with cracks, J.
Online since: May 2005
Authors: A. Blankl, Manfred Geiger
After the welding operation, the quality of the welding seam is
evaluated by means of its mechanical properties and tightness.
In general these sheets are contaminated with lubricants and the omission of the cleaning process shows up in an observable degradation of seam quality, e.g. mechanical properties and surface discontinuity [2, 3].
Thereby different influencing factors are varied and the results are considered.
The design of the process factors was a quadratic, d-optimal design (22 design runs and 2 replicates) and the model was created with the RSM target (Response Surface Modelling).
These two factors are helpful to evaluate the correlation between the experiment results and the created model.
In general these sheets are contaminated with lubricants and the omission of the cleaning process shows up in an observable degradation of seam quality, e.g. mechanical properties and surface discontinuity [2, 3].
Thereby different influencing factors are varied and the results are considered.
The design of the process factors was a quadratic, d-optimal design (22 design runs and 2 replicates) and the model was created with the RSM target (Response Surface Modelling).
These two factors are helpful to evaluate the correlation between the experiment results and the created model.
Online since: April 2015
Authors: Januarty Jaya Ekaputri, Ridho Bayuaji, Boedi Wibowo, Srie Subekti, Muhammad Sigit Darmawan, Nur Ahmad Husin
The compressive strength is important mechanical properties for construction material.
Physical and chemical analysis properties of FA has been performed at Energy Laboratory ITS (Institut Technology of Sepuluh Nopember Surabaya).
A statistical analysis was performed to determine the statistically significant factors and data analysis therefore this table has no units.
Geopolymer concrete (GB) properties are highly dependent upon the type, ratios and concentrations of mixing constituents.
MS Darmawan, et al., The Effect of Chloride Environment on Mechanical Properties Geopolymer Binder with Fly Ash.
Physical and chemical analysis properties of FA has been performed at Energy Laboratory ITS (Institut Technology of Sepuluh Nopember Surabaya).
A statistical analysis was performed to determine the statistically significant factors and data analysis therefore this table has no units.
Geopolymer concrete (GB) properties are highly dependent upon the type, ratios and concentrations of mixing constituents.
MS Darmawan, et al., The Effect of Chloride Environment on Mechanical Properties Geopolymer Binder with Fly Ash.
Online since: May 2003
Authors: L. Sharma, Giuseppe Pezzotti
These new exciting components significantly
advance the medical applications range and diversity, creating the desired physical and mechanical
properties.
The three hybrids mechanical properties and their synthetic route were established.
A number of mechanical properties, including hardness, flexural fatigue or flex life, softening temperature, toughness, elongation at tensile break are influenced by the molecular weight.
Since polymerisation times are so critical to the molecular weight and in turn the mechanical properties, ideally molecular weight calculation of the three hybrids would allow us to substantially quantify the varying molecular weights with the mechanical properties.
Conclusion The polymerisation conditions for hybrid biomimetic synthesis greatly influence the mechanical properties, due to the monomer and high molecular weight considerations.
The three hybrids mechanical properties and their synthetic route were established.
A number of mechanical properties, including hardness, flexural fatigue or flex life, softening temperature, toughness, elongation at tensile break are influenced by the molecular weight.
Since polymerisation times are so critical to the molecular weight and in turn the mechanical properties, ideally molecular weight calculation of the three hybrids would allow us to substantially quantify the varying molecular weights with the mechanical properties.
Conclusion The polymerisation conditions for hybrid biomimetic synthesis greatly influence the mechanical properties, due to the monomer and high molecular weight considerations.