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Online since: August 2012
Authors: Jeremy Gabler, Gian Ricardo C. Silva, Anthony M. Zaffuto, Anna Wehr-Aukland, Donald J. Bowe
Different approaches have been investigated to extend service life of conveyor mesh belts, including material selection [1, 2], design-related factors, such as shape of the wire used to produce spiral loops [3] and modification of furnace atmosphere [4].
However, all oxide scales, including Cr2O3 that is well recognized for its protective properties, contain pores and cracks [6].
Tensile Properties Tensile properties of the cross-rods removed from belts B1 and B2 are shown in Figure 10.
Tensile properties of cross-rods removed from belts B1 and B2; 95% confidence intervals for: (a) tensile strength; (b) yield strength; (c) elongation.
Carburization and nitridation-related precipitation of particles leads to loss of low temperature ductility and may affect the creep properties [6, 8].
Online since: June 2025
Authors: Mahmood Alhafadhi, Saleh Suliman Saleh Elfallah, Masar Alsigar, Mobark Haider Faisal Helal, S. Santhosh Kumar, Alden Abd Alal Sahm, Mohammed Ahmed Shehab
The distribution and magnitude of these stresses are influenced by several factors, including welding parameters (e.g., heat input, welding speed, and electrode diameter), material properties, and initial conditions such as pre-existing stresses or prior thermal histories.
Additionally, pre-existing thermal and mechanical conditions can alter residual stress profiles, and failing to account for these factors may lead to inaccurate predictions and suboptimal welding practices.
The distribution and magnitude of these stresses are influenced by the physical and mechanical properties of both the weld and base metals.
Table 1. shows the Mechanical properties of base pipe and weld metal.
S., “Study the influence of welding parameters by taguchi’s design on the mechanical properties of welded mild steel (S235jr)”, Jurnal teknologi, vol. 85, no.4, pp.55-66, 2023
Online since: June 2021
Authors: Siham Kamali-Bernard, Libasse Sow, Fabrice Bernard
Their heterogeneity may be responsible for possible variations of these mechanical properties.
The idea is to link the structure and properties of cementitious materials.
For a long hydration time (α = 0.83) corresponding to a porosity in the matrix of 70%, the mechanical properties given in Table 3 are obtained.
The Cement Bound Gravel thus presents mechanical properties comparable to those of conventional cement-treated gravels used for low or moderate traffic roads.
Gholam, Modeling of mechanical properties of roller compacted concrete containing RHA using ANFIS.
Online since: December 2016
Authors: K. Terada, Mayu Muramatsu, Tatsuya Kawada
Although the mechanical behavior of ferroelasticity is considered to affect the mechanical behavior of the SOFC, it has been scarcely understood.
The macroscopic mechanical properties are discussed with formation of microstructure.
The material properties and analysis conditions are: and .
Kawada, In Situ Measurements of Mechanical Properties of Materials for Solid Oxide Fuel Cells, Netsu Sokutei. 40 (2013) 23-29
[6] Kimura, Y. et al.: Ferroelastic Domain Reorientations and Its Influence on Mechanical Properties of La 0.6Sr0.4Co0.2Fe0.8O3-d, J.
Online since: July 2016
Authors: Yuri Kulikov
In the heart of the processes of formation of physical and mechanical properties of secondary lining of underground structures is the residual water-cement ratio, which indicates the extraction of the mixing water of the concrete mixture under the action of external pressure forces.
This leads to deterioration of physical and mechanical properties of the lining in the roof part of the tunnel.
Introduction Many scientists have dedicated their scientific researches to the problem of formation of physical and mechanical properties of secondary lining of underground structures [9], [10], [12], [16].
The analysis of known research [1], [2], [7] and decisions about the influence of water-cement ratio (W/C) for filtration and other properties of the concrete lining of underground structures [4], [5] shows that the main factor affecting the main indicators of residual concrete is water-cement ratio (W/C)br.
Concrete: Microstructure, Properties and Materials. – (3rd ed.). – McGraw-Hill, New York (2006) [17].
Online since: July 2014
Authors: Jian Chun Hu, Jian Yong Gao, Yan Xia Chen
In 1998, Jing Li and Xinhua Zhou et al.[7] improved Bishop method, considered main factors that affected high loess slopes simultaneously and designed an analysis chart related to stability of loess slopes.
Researches indicate that stability of high loess slopes are mainly affected by seven factors including weight of soil body, cohesive force, internal friction angle, slope ratio, slope height, pore pressure and seismic intensity [12].
As a result, calculating parameters of slopes are obtained, and safety factors of slopes are got by table lookup. 3.2.8 Conformation of safe state.
After each group of parameters has been input, values of each group of safe factors can be obtained by chart lookup function.
Section of old loess (Q1) determination of engineering properties and nonlinear parameters of Jiuzhoutai Section[J].1994,(5):22-25
Online since: May 2014
Authors: Zhang Qin Wu, Guo Dong Han, Shu Ting Wan, Zhan Jie Lv, Rong Hai Liu, Jin Wang
The broken analysis of 220kV transmission line tension crimp barrel steel core Guodong Han1,3, a, Shuting Wan1,b, Zhangqin Wu2, c, Zhanjie Lv1,3,d , Ronghai Liu2, e, Jin Wang2, f 1 Department of Mechanical Engineering, North China Electric Power University, China,Baoding 071003,2 Electric Power Research Institute, Yunnan Electric Power Test & Research Institute Group Co.Ltd., China,Kunming 650217, 3 Graduate Workstation of North China Electric Power University & Yunnan Electric Power Grid Corporation ahgd100629@126.com, bwanshuting1@sina.com, c 1031172082@qq.com, d 1043398404@qq.com, e 23697835@qq.com, f25335572@qq.com Keywords: 220kV transmission line, Tension crimp barrel, Steel core broken, Cause Analysis Abstract.
Crimp quality directly affects the mechanical properties and electrical conductivity of the wire.
The above factors have contributed to tensile strength of two tension crimp barrels decreased.
In practice engineering, wire crimping quality is the key factor that affecting the performance of the wire, Improved crimping measures and standardized crimping method can effectively protect the wire crimp quality.
Online since: September 2013
Authors: Jing Shi Dong, Liang Liang Wang, Hao Cai, Qin Mei, Qing Cai Liu, Jin Ju Sun
Introduction Torsion testing is an important experimental method to test the mechanical properties of a certain material.
The most commonly used torsion testing machine usually measures mechanical properties of materials in the big torque conditions, which can not accurately test the torsion properties of mechanical structures in the micro-torque / deformation conditions of service or the small size structure.
In order to improve the accuracy of the test, a small-scale torque sensor used to test the mechanical properties of biological bone issue has been designed.
Structure of the Low-range Torque Sensor The torque sensor is designed for the test of the mechanical properties of biological bone issue in this paper and the range of it is typically 0 to 0.5mN•m.
However, stress gradient is large which causes it difficult to paste the strain gauge and affect the accuracy of measurement.
Online since: June 2012
Authors: Li Ge Wang, En Ze Wang, Xiao Hu Wan, Bin Zuo, Guang Zhi Zhu
The epoxy resin packaging material is made up of epoxy resin, filler and curing agent, and can provide mechanical support and insulating property for the integrated circuit board.
Besides, the filler will affect crystallinity and crystallite size of the polymer so as to change its thermal conductivity.
Based on the above analysis, filler was supposed to distribute evenly in the resin, and the mathematical expression is as follows: Lgλ = VC2 lgλ2 + (1-V) lg (λ1C1 ) (2) C1 - influence factors of crystallinity and crystallite size of polymer, C2 - free factor of formation of heat conductive chain.
The relative factors have been calculated and processed by equation (3), as shown in Table 1.
The preparation and properties of epoxy molding compounds filled with multiple ceramic particles.
Online since: May 2015
Authors: Pavel Podaný, Petr Martínek, Jana Míšková
The quality of the steel depends on additional factors which cannot be deduced from its grade number, e.g. the manufacturer and the processing route comprising smelting and melting, final annealing and the treatment of semi-finished products.
Fig 1a, b microstructure of the die with distinct carbide bands, c) crack propagating from the die surface through carbide bands Poor mechanical properties are found in materials which underwent an inadequate amount of working.
Final properties upon hardening are to great extent governed by the quenching (austenitizing) temperature.
According to literature [5], even small deviations from the prescribed austenitizing and tempering temperatures and from the cooling rate may have profound effect on the mechanical properties of the material.
The material is then treated in the temper brittleness region and is imparted poor mechanical properties and toughness in particular.
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