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Online since: July 2017
Authors: Madlen Ullmann, Michael Höck, Claudia Kawalla
During the production the quality of magnesium strips can be reduced by segregations, which also influence the distribution of the mechanical properties.
Inhomogeneity has a negative impact on the formability, which also affect the properties in transverse direction.
Supporting the thesis TRC magnesium strips are shown, which have different thickness profiles, mechanical properties and proportions of segregations.
However, the remaining part of segregations has a negative effect on the mechanical properties in transverse direction.
The segregations have in turn impact on the mechanical properties in transverse direction of the TRC strips.
Online since: May 2011
Authors: Xue Song Zhang, Shu Hong Sun, An Bang Gu
So, to grasp the mechanical properties of this type of bridge should also pay much more attention to the main beam, in addition to above issues.
Study on mechanical characteristics for the PC beam of Chongqing Jiayue Bridge Chongqing Jiayue Bridge is over Jialingjiang River.
For the large flange, the cross beam’s internal force in direction along the central line of bridge was significantly affected by the load conditions, support conditions and prestressing.
The rational design of prestressing, external prestressing and cable force for PC beams is a comprehensive work, and economic factors must be in considered together Study on the PC beam of Jiayue Bridge was focused on the mechanical properties of the PC beam under the interaction of prestressing, kiloton cable force, and the special flange anchorage, external prestressing was not applied or taken into account.
How to simplify the calculation method of achieving a practical mode, considering the three factors of prestressing, external prestressing and cable tension, not only to meet the PC beam’s safety requirements, but also to meet the need of the construction process simplification and economy?
Online since: September 2013
Authors: Li Li Zhao
In operation, rotor is mainly affected by tension, compression, bending and torsion.
The main failure mode is fatigue failure, and may also be affected by stress corrosion cracking, plastic deformation, and other forms of failure.
There are lots of studies and research on these topics, which are mainly in the low-cycle fatigue properties of turbine generator rotor structure and materials, high-temperature creep, fatigue, fracture toughness.
When the constraint is applied, based on the symmetry properties of the rotor structure, the use of polar coordinates, the symmetry constraint is applied in the plane of symmetry of the structure, the wedge pressure of the coil and the insulating member is applied in the bottom of the wedge.
Table 1 The rotor maximum stress and safety factors of different units Unit type n(r/min) Tooth head maximum stress Tooth head minimum safety factor Maximum stress of the wedge Minimum factor of safety of the wedge Flat 3000 427.67 1.61 138.88 2.27 Flat 3600 615.84 1.12 199.99 1.58 Entity 3000 415.54 1.66 101.21 3.11 Entity 3600 598.38 1.15 145.74 2.16 As can be seen by Table 2, the plane unit and the physical unit can be used to check out of stress of the rotor teeth head and the wedge portion.
Online since: October 2006
Authors: Seong Kyun Cheong, Kook Jin Lee, Jae Heon Lee, Tae Kun Lee
Experimental results show that the residual stress distribution and the number of cycles to failure of a drive plate are greatly affected by peening process.
Introduction Automobile is operated by interactive movements among respective parts and the fatigue fracture which is generated at this time affects the reliability of automobile.
Mechanical properties of this material are shown in the Table 1.
Table 1 Mechanical properties of high carbon steel.
This is judged to be because grain shape is changed and the effect of factors from microstructure of grain and the effect of stress from uneven deformation affected with compounded effect.
Online since: November 2020
Authors: Ludmila Kučerová, Zbyněk Bunda, Martin Bystrianský
Apparently, the presence of defect in the initial state showed direct influence on properties like lower tensile strength.
Suitable heat treatment of the material should be used to remove undesirable factors such as internal stress or heterogeneity.
Even though there are regions that are affected more than other the deformation occurs in whole sample.
Chawla, Temperature-dependent mechanical properties of an austenitic–ferritic stainless steel studied by in situ tensile loading in a scanning electron microscope (SEM), Materials Science and Engineering A 580 (2013) 159-168
Park, Effects of the strain rate on the tensile properties of a TRIP-aided duplex stainless steel.
Online since: October 2023
Authors: Rubén Dorado Vicente, Juan Antonio Ordóñez Partal, María Francisca Guerrero-Villar, Gustavo Medina Sánchez
However, it still presents numerous drawbacks such as low productivity, its poor surface finish and the uncertainty in the mechanical properties obtained [2].
The angle of inclination of the surfaces affects the stacking of layers on top of each other.
In order not to increase the number of tests, it was decided to carry out a full factorial design with two factors: the angle of inclination of the wall and the layer height.
The first factor will have nine levels (from 10º to 90º) and the second factor three levels (0.1 - 0.15 - 0.2 mm).
Combination of factors for tests.
Online since: July 2016
Authors: Jun Ru Yang, Xue Cheng Chen, Hai Tao Feng, Kun Guo, Yu Rong Chi
Junru Yang et al [7,8] studied the change laws of the intensity stress factor of the interface crack in the hard cladding material structure with the mechanical load, temperature load, crack length and the cladding thickness.
The propagation properties of these three interface micro cracks are explored by the molecular dynamics simulated calculations of the models with interface micro cracks.
The relationship between interface crack length and interface bonding energy of the interface model Propagation Property of the Interface Micro Cracks with Different Length To the micro crack parallel with the interface, the further study is about the micro crack length affect on the interface propagation property.
Li, Research on the mechanical properties of the multiple hard alloy coating, Surf. technol. 37 (2008) 16-18
Chen, et al, Research on stress intensity factor of the interface crack in the hard cladding material structure under mechanical impact load, Key Eng.
Online since: October 2008
Authors: Young Woo Kim, Ju Woong Jang, Tai Joo Chung, Kyung Sik Oh
However, such an addition of compliant phase usually reduces the mechanical properties.
The mechanical properties of bone cements are dependent on the parameters such as powder to liquid ratio, particle size, composition and so on [2].
In case of the brushite cement, it was shown that the temperature and humidity before setting were important factors controlling properties of cement [3].
It was found that the type of saline solution was an important parameter affecting the porosity of hardened paste and consequent compressive strength.
Conclusions Properties of apatite type bone cement were compared with respect to the concentration of setting agent and types of saline solution used for storage after setting.
Online since: July 2016
Authors: Tetsuo Honma, Kohei Fukumi, Kenji Kintaka, Hironori Ofuchi, Tomoko Akai, Naoyuki Kitamura
Nishii, Optical properties of zinc bismuth phosphate glass, Mater.
Avlas, Glass-formation and some properties of glasses of the system BaO-Nb2O5-P2O5, Fiz.
Delevoye, Study of structure and properties of ZnO-Bi2O3-P2O5 glasses, J.
Nishii, Optical properties if fluorine-substituted zinc bismuth phosphate glasses, J.
Adamietz, Non linear optical properties of some niobium(V) oxide glasses, Eur.
Online since: January 2020
Authors: Yury V. Shcheglov, Natalia V. Fedorova, Dmitry A. Shaforost
The Abrasive Properties of Coal Power Plants Ash and Slag Materials Yury V.
These properties must be considered to ensure durable trouble-free operation of thermal power plants.
On the other hand, these properties can be used when planning measures for ash and slag material disposal.
But over time, coatings lose their properties, integrity, and need to be updated.
Abrasive properties of ASM are associated with their physicochemical properties and formation features.
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