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Online since: July 2021
Authors: Olha Smirnova, Oleksij Pylypenko, Andrej Nikonov, Yulia Mukhina
It is due to a unique combination of the properties of the materials of this category that include the corrosion resistance, a high specific strength, a low density, and an opportunity for the manufacturing of the parts and article using different methods of the mechanical treatment.
To increase the corrosion resistance with simultaneous marking and imparting the inertness and compatibility properties to the surface, we use the method of the electrochemical oxidation of titanium.
At the same time, the film thickness defines the properties of the oxide coating and has a direct impact on the duration of the electrochemical treatment of the articles that is considered to be the basic technological parameter of the process.
Littlefair, Titanium in biomedical applications – properties and fabrication: a review, Journal of Biomaterials and Tissue Engineering. 5(8) (2015) 593-619
Shkolnikova, Studying the insulating properties of oxide films obtained on the Ti6A14V alloy in tartaric acid solutions using the method of electrochemical decoration by copper, ARPN Journal of Engineering and Applied Sciences. 15(15) (2020) 1657-1666
To increase the corrosion resistance with simultaneous marking and imparting the inertness and compatibility properties to the surface, we use the method of the electrochemical oxidation of titanium.
At the same time, the film thickness defines the properties of the oxide coating and has a direct impact on the duration of the electrochemical treatment of the articles that is considered to be the basic technological parameter of the process.
Littlefair, Titanium in biomedical applications – properties and fabrication: a review, Journal of Biomaterials and Tissue Engineering. 5(8) (2015) 593-619
Shkolnikova, Studying the insulating properties of oxide films obtained on the Ti6A14V alloy in tartaric acid solutions using the method of electrochemical decoration by copper, ARPN Journal of Engineering and Applied Sciences. 15(15) (2020) 1657-1666
Online since: November 2012
Authors: Byung Sik Chun, Eric Yee, Jongh Wi Lee, Dae Sung Lim
However, chemical additives and ion-exchange can affect water chemistry.
This mechanical technique sprays high pressure water onto pipe wall deposits, which loosens, shears, and drains away the unwanted materials [34-35].
The differences in mass between the pipes angled at 2° and 5° suggest that flow is a significant factor in calcium carbonate deposition, with lower gradients being able to develop more scale.
Table 3 lists some properties for calcite, aragonite, and vaterite.
Properties of calcium carbonate polymorphs.
This mechanical technique sprays high pressure water onto pipe wall deposits, which loosens, shears, and drains away the unwanted materials [34-35].
The differences in mass between the pipes angled at 2° and 5° suggest that flow is a significant factor in calcium carbonate deposition, with lower gradients being able to develop more scale.
Table 3 lists some properties for calcite, aragonite, and vaterite.
Properties of calcium carbonate polymorphs.
Online since: December 2012
Authors: Shu Lin Chen, Bao Rui Du, Guo Lei Zheng, Yun Long Tang
Tool Path Generation for Top Planar Surface of Ribs in
Aircraft Structural Parts
Yunlong Tang1, a, Guolei Zheng1,b , Baorui Du2,c and Shulin Chen 1, d
1School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
2Shenyang Aircraft Industry (Group) Corporation Ltd, Shenyang 110034, China
afetghf@hotmail.com, bzhengguolei@buaa.edu, csacdbr@sohu.com, dcsl_buaa@139.com
Keywords: Tool path; Rib; Aircraft structural part; Constrained Delaunay triangulation.
The key factor affecting the construction of the MCs set of RTF is the split of the face into several sub areas and the extraction of its guiding curve.
Skeletons are widely used to describe its global topological and geometric properties of an object.
The key factor affecting the construction of the MCs set of RTF is the split of the face into several sub areas and the extraction of its guiding curve.
Skeletons are widely used to describe its global topological and geometric properties of an object.
Online since: June 2018
Authors: M. Benhaddou, M. Abbadi, Mohammed Ghammouri
This is why the mechanical properties of microscale components have to be established via mechanical testing of actual components or at least on specimens with similar scale, microstructural characteristics and elaboration process.
Indeed, the deployment process generates initial plastic deformation which, coupled to cyclic loading, significantly affects the lifetime of the stent.
Note that the dissipated energy, responsible for the damage of the material, due to shearing is less involved as it is weighted by the J factor (Cf.
Cyclic hardening properties of hard-drawn copper and rail steel.
Journal of the Mechanical Behaviour of Biomedical Materials. 2009;2:210-216
Indeed, the deployment process generates initial plastic deformation which, coupled to cyclic loading, significantly affects the lifetime of the stent.
Note that the dissipated energy, responsible for the damage of the material, due to shearing is less involved as it is weighted by the J factor (Cf.
Cyclic hardening properties of hard-drawn copper and rail steel.
Journal of the Mechanical Behaviour of Biomedical Materials. 2009;2:210-216
Online since: December 2013
Authors: Quan Bing Yang
In order to obtain high durable repair, the repair material also has other special properties, such as high deicer-frost resistance for the scaled-pavement repair, high ability to protect steel from corrosion for the reinforced-concrete repair, etc.
Most of them are mainly centered on chemical compositions and mechanical properties of the materials [3-6].
The air content and the void spacing factor were measured for specimens only used for the deicer-frost test.
Consequently, the abrasion resistance of MPB is an important property.
(6) For the MPB materials soaked in water or 3% NaCl solution for a long time, the strength loss occurs, but is not big enough to affect the application of MPB
Most of them are mainly centered on chemical compositions and mechanical properties of the materials [3-6].
The air content and the void spacing factor were measured for specimens only used for the deicer-frost test.
Consequently, the abrasion resistance of MPB is an important property.
(6) For the MPB materials soaked in water or 3% NaCl solution for a long time, the strength loss occurs, but is not big enough to affect the application of MPB
Online since: August 2023
Authors: Tetyana Nabokina, Andrii Kondratiev, Oleg Semkiv, Oleksandr Gaidachuk, Svetlana Shapoval
However, prepreg production is associated with a number of harmful factors, adversely affecting the participants in the technological process and the environment [9, 10].
These factors were studied by a number of authors, but the efficiency of technological processes in the most of papers is evaluated either by the labor intensity or the cost and energy consumption, or by these criteria taken together.
Jawaid, A review on thermomechanical properties of polymers and fibers reinforced polymer composites.
Prontsevych, Stabilization of physical-mechanical characteristics of honeycomb filler based on the adjustment of technological techniques for its fabrication.
These factors were studied by a number of authors, but the efficiency of technological processes in the most of papers is evaluated either by the labor intensity or the cost and energy consumption, or by these criteria taken together.
Jawaid, A review on thermomechanical properties of polymers and fibers reinforced polymer composites.
Prontsevych, Stabilization of physical-mechanical characteristics of honeycomb filler based on the adjustment of technological techniques for its fabrication.
Online since: February 2014
Authors: Aurea Lucia Georgi Vendramin, Carlos Itsuo Yamamoto, Samuel N. Souza Melegari
There was the ease of their generation from various energy sources such as: mechanical, thermal, nuclear and chemical heating.
Today there is a great encouragement and decision by opting to increase the supply of electricity by new hydroelectric and thermoelectric plants, even if it affected the high cost and long-maturity assets outside the hydrological risk that this option has been threatening, ending with a complex composition costs and tariffs whose abstraction rises within the legislature [3].
Table 1 - The physical properties of materials ELEMENT AREA MATERIAL U - FACTOR W/m²K Flagstone 51,23m² Precast 0,71 Externals walls 138,32 m³ Brick with 6 holes-plaster 0,86 Openings 20, 30, 40 e 50% Single glass 5,91 Double glass 3,46 Floor 51,23 m² 0,12 Fonte: DURMAYAZ, KADIOGLU e SEN (2000). 3.
The material used for construction will also affect, as shown in the model results in a greater or lesser power consumption.
Today there is a great encouragement and decision by opting to increase the supply of electricity by new hydroelectric and thermoelectric plants, even if it affected the high cost and long-maturity assets outside the hydrological risk that this option has been threatening, ending with a complex composition costs and tariffs whose abstraction rises within the legislature [3].
Table 1 - The physical properties of materials ELEMENT AREA MATERIAL U - FACTOR W/m²K Flagstone 51,23m² Precast 0,71 Externals walls 138,32 m³ Brick with 6 holes-plaster 0,86 Openings 20, 30, 40 e 50% Single glass 5,91 Double glass 3,46 Floor 51,23 m² 0,12 Fonte: DURMAYAZ, KADIOGLU e SEN (2000). 3.
The material used for construction will also affect, as shown in the model results in a greater or lesser power consumption.
Online since: December 2011
Authors: Xi Jun Hu, Xiao Ling Jin, Yue Hua Chen, Qin Xu
Due to their concentrative property, heavy metals can be hardly degraded in the environment.
In particular, excessive content of Mn and Cd will affect various metabolic functions of plants and hereby severely restrain and impair the growth of the majority of plants.
This is the crucial factor in ecological restoration and reconstruction.
Meanwhile, mechanical pressing will damage the structure of soil in mining place and make it hardened.
As plants growing in wasteland can adapt to extreme conditions, featuring extremely great endurance and concentrative property, such plants can be selected as pioneer plants for the vegetation restoration on gangue.
In particular, excessive content of Mn and Cd will affect various metabolic functions of plants and hereby severely restrain and impair the growth of the majority of plants.
This is the crucial factor in ecological restoration and reconstruction.
Meanwhile, mechanical pressing will damage the structure of soil in mining place and make it hardened.
As plants growing in wasteland can adapt to extreme conditions, featuring extremely great endurance and concentrative property, such plants can be selected as pioneer plants for the vegetation restoration on gangue.
Online since: November 2016
Authors: Chao Zhu, Hao Lei Wang, Feng Jie Ma
On the other hand, earthquake disasters occur frequently in China, earthquake as an irresistible factor directly affect the safety of bridge; because of its unique position, great strategic significance, and huge investment, the destruction of the long span suspension bridge in an earthquake would result in substantial losses [5].
Accordingly, to study dynamic characteristic and seismic behavior of long-span suspension bridge with higher strength cable wire, to investigate the mechanical properties of this structure, and to take reasonable seismic protection system, these are of great significance on safety and economic nature of long-span suspension bridge.
Table 1 and Fig. 3 indicated that 1) the first 10 natural vibration frequencies are less than 0.15 Hz, the base frequency of NZCB is 0.037 Hz, and NZCB has a longer natural vibration period, its natural vibration periods are between 6.817s and 26.882s; 2) The characteristics of 1st vibration mode is symmetrical lateral bending of stiffening girder, it fits in with the characteristics of large span flexible structure; 3) the 1st~5th mode is main girder vibration with low frequency, the main girder vibration is easy to achieve, the 6th~10th mode is main girder vibration with high frequency and main cable vibration; the vibration of tower isn’t observed in lower frequency range, it shows that the tower has enough rigidity; 4) the vibration modes have the feature of concentrated distribution, the frequency spacing is small; 5) the different mode has a strong coupling effect, the vibration among different member can affect each other.
Accordingly, to study dynamic characteristic and seismic behavior of long-span suspension bridge with higher strength cable wire, to investigate the mechanical properties of this structure, and to take reasonable seismic protection system, these are of great significance on safety and economic nature of long-span suspension bridge.
Table 1 and Fig. 3 indicated that 1) the first 10 natural vibration frequencies are less than 0.15 Hz, the base frequency of NZCB is 0.037 Hz, and NZCB has a longer natural vibration period, its natural vibration periods are between 6.817s and 26.882s; 2) The characteristics of 1st vibration mode is symmetrical lateral bending of stiffening girder, it fits in with the characteristics of large span flexible structure; 3) the 1st~5th mode is main girder vibration with low frequency, the main girder vibration is easy to achieve, the 6th~10th mode is main girder vibration with high frequency and main cable vibration; the vibration of tower isn’t observed in lower frequency range, it shows that the tower has enough rigidity; 4) the vibration modes have the feature of concentrated distribution, the frequency spacing is small; 5) the different mode has a strong coupling effect, the vibration among different member can affect each other.
Online since: September 2016
Authors: Abdul Aziz Abdul Samad, Noridah Mohamad, Afif Iman, Hazel Monica, Josef Hadipramana, Goh Wan Inn
The laboratory tests were conducted on the RAC mixture to determine its fresh and hardened state properties.
Properties of Hemp Fibre Reinforced Concrete Composites.
Physicochemical Properties of the Josapine Variety of Pineapple Fruit.
Physico-Chemical Properties of Pineapple Variety N36 Harvested and Stored at Different Maturity Stages.
Effect of Moisture and Temperature on the Mechanical Properties of Concrete.
Properties of Hemp Fibre Reinforced Concrete Composites.
Physicochemical Properties of the Josapine Variety of Pineapple Fruit.
Physico-Chemical Properties of Pineapple Variety N36 Harvested and Stored at Different Maturity Stages.
Effect of Moisture and Temperature on the Mechanical Properties of Concrete.