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Online since: August 2011
Authors: Anak Khantachawana, Surachai Dechkunakorn, Nattiree Chiranavanit, Rutchadakorn Isarapatanapong, Niwat Anuwongnukroh, Julathep Kajorchaiyakul
Other factors affect the properties of NiTi wires such as chemical composition and manufacturing procedures.
Heat treatment can affect the mechanical properties of NiTi wires, as described in various studies about this topic.[8-13] The degree of working also affects the mechanical properties since increasing it tends to make the alloy lose its superelastic characteristics.
Finally, further studies are needed to evaluate commercially-made orthodontic NiTi wires related to other factors affecting clinical use.
Triple-stranded stainless steel wires-evaluation of mechanical properties and comparison with titanium alloy alternatives.
Effect of low-temperature phase changes on the mechanical properties of alloy near composition NiTi.
Heat treatment can affect the mechanical properties of NiTi wires, as described in various studies about this topic.[8-13] The degree of working also affects the mechanical properties since increasing it tends to make the alloy lose its superelastic characteristics.
Finally, further studies are needed to evaluate commercially-made orthodontic NiTi wires related to other factors affecting clinical use.
Triple-stranded stainless steel wires-evaluation of mechanical properties and comparison with titanium alloy alternatives.
Effect of low-temperature phase changes on the mechanical properties of alloy near composition NiTi.
Online since: October 2019
Authors: Wantanee Buggakupta, Pornapa Sujaridworakun, Nattawut Saechin, Thanaporn Wilairat
That is because it has direct impacts on the physical and mechanical properties.
Porosity and compressibility affect properties like brake vibration.
These properties are significantly affected by the performance of the pad.
Both properties are affected not only by the material formulation but also by the manufacturing process [3].
Molding pressure (X2) is considered to be the most influent factor affecting porosity.
Porosity and compressibility affect properties like brake vibration.
These properties are significantly affected by the performance of the pad.
Both properties are affected not only by the material formulation but also by the manufacturing process [3].
Molding pressure (X2) is considered to be the most influent factor affecting porosity.
Online since: July 2014
Authors: Lei Chen, Jian Zhou, Su Ma, He Tao Hou, Jing Jing Li, Hai Ning Liu
Experimental Study on Factors Affecting the Bond-slip Properties of Concrete Reinforced by Bamboo-based Fiber Composites
Jian Zhou1, a, Su Ma*1,b , Hetao Hou 1,c , Jingjing Li1,d, Haining Liu1,e
and Lei Chen1,f
1 Department School of Civil Engineering, Shandong University, Jinan , Shandong,250061,China
axiaobin_00@126.com, b*Corresponding Author: masuhappy@163.com, chouhetao@sdu.edu.cn
ddreamjing3@163.com, e785208361@qq.com, f 806820064@qq.com
Keywords: Bamboo-based fiber composites, Concrete, Pull-out test, Bond property
Abstract.
Using bamboo which has the good characteristics of short growth circle, strong regeneration, well mechanical and thermal properties as a building structure material is conducive to the improvement of its utilization rate [1].
The bond properties between bamboo bar and concrete is the basis of cooperative work.
The main properties of coal ash with few CaO are shown in table 1.
(2) Section form of the composites is the key influencing factor; bond length and strength grade of concrete are important factors too; tensile strength of the composites is not significant factor
Using bamboo which has the good characteristics of short growth circle, strong regeneration, well mechanical and thermal properties as a building structure material is conducive to the improvement of its utilization rate [1].
The bond properties between bamboo bar and concrete is the basis of cooperative work.
The main properties of coal ash with few CaO are shown in table 1.
(2) Section form of the composites is the key influencing factor; bond length and strength grade of concrete are important factors too; tensile strength of the composites is not significant factor
Online since: August 2013
Authors: Lian Chong Li, Shao Hua Li
Under the combined effects of various external factors, such as temperature, seepage, alternate wetting and drying and so on, the mechanical properties of rock mass are susceptible to be deteriorated, and its strength characteristics are significantly degraded with time.
Introduction Since there are such a variety of inducements as temperature, alternating wet and dry, human activities and other external factors to trigger the damage, the rock slope which contains weak layers and structure planes, its intrinsic physical and mechanical properties of materials are vulnerable to deteriorate, especially its strength characteristics are significantly degraded with time, mesoscopic damage accumulate inside the rock, so its stability becomes a condition that varies with time.
Properties of structures planes generally vary from location to location and may change with time.
Additionally, compared with the bedrock, the properties of the structure planes is more important.
If the rock slope has been in adverse geotechnical environment for a long time, its mechanical properties deteriorate and the failure time of the slope is significantly shortened compared with the same slope in advantage geotechnical environment.
Introduction Since there are such a variety of inducements as temperature, alternating wet and dry, human activities and other external factors to trigger the damage, the rock slope which contains weak layers and structure planes, its intrinsic physical and mechanical properties of materials are vulnerable to deteriorate, especially its strength characteristics are significantly degraded with time, mesoscopic damage accumulate inside the rock, so its stability becomes a condition that varies with time.
Properties of structures planes generally vary from location to location and may change with time.
Additionally, compared with the bedrock, the properties of the structure planes is more important.
If the rock slope has been in adverse geotechnical environment for a long time, its mechanical properties deteriorate and the failure time of the slope is significantly shortened compared with the same slope in advantage geotechnical environment.
Online since: January 2012
Authors: Angel Fernandez, Manuel Muniesa
Cogullada 20, 50014 Zaragoza Spain
aangel.fernandez@unizar.es, bmmuniesa@unizar.es
Keywords: microcellular foaming, mechanical properties , shrinkage, injection moulding.
Complexity of microcellular injection molding is very high because the final properties of the material obtained depend largely on the processing conditions and these in turn unalterable factors such as mold design and manufacturing.
Knowing that the reduction of foam density implies a reduction of the mechanical properties and influences the final piece dimensions the conclusion is that the microcellular injection process has a very small process window to fit all these factors.
Second is the determination of mechanical properties which do not show a proportional reduction but exponentially with weight reduction components.
Simple Modeling of the Mechanical Properties with Part Weight Reduction for Microcellular Foam Plastic.
Complexity of microcellular injection molding is very high because the final properties of the material obtained depend largely on the processing conditions and these in turn unalterable factors such as mold design and manufacturing.
Knowing that the reduction of foam density implies a reduction of the mechanical properties and influences the final piece dimensions the conclusion is that the microcellular injection process has a very small process window to fit all these factors.
Second is the determination of mechanical properties which do not show a proportional reduction but exponentially with weight reduction components.
Simple Modeling of the Mechanical Properties with Part Weight Reduction for Microcellular Foam Plastic.
Online since: May 2014
Authors: Di Wu, Zhuang Li, Huan Huan Yu, Lei Luo, Ming Liu
A satisfactory mechanical property was obtained by intercritical annealing and subsequent overaging.
Dual Phase (DP) steels with ferrite-martensite microstructures developed over the past few decades and offer impressive mechanical properties, such as continuous yielding behavior and superior strength–ductility combination [3].
In the practical industrial production of cold rolled UHSS steel, many factors such as the intercritical annealing, aging and the cooling rate during heat treatment, can influence its mechanical properties.
Fig. 3 SEM and TEM micrographs of the specimens Mechanical Properties.
The intercritical annealing and aging temperature are significant factors affecting the Rm.
Dual Phase (DP) steels with ferrite-martensite microstructures developed over the past few decades and offer impressive mechanical properties, such as continuous yielding behavior and superior strength–ductility combination [3].
In the practical industrial production of cold rolled UHSS steel, many factors such as the intercritical annealing, aging and the cooling rate during heat treatment, can influence its mechanical properties.
Fig. 3 SEM and TEM micrographs of the specimens Mechanical Properties.
The intercritical annealing and aging temperature are significant factors affecting the Rm.
Online since: January 2014
Authors: Bo Yu, Wei Ming Wang, Yun Feng
There are direct relationships between micro-molecular structure and mechanical properties.
The main influence factors for fiber mechanical behavior are morphological structure, crystallinity and molecular orientation.
Effect of treatment temperature on the mechanical properties of PorelTM fiber.
The effect of treatment temperature on PorelTM fiber’s mechanical properties are showed in Fig.2.
Effect of treatment time on the mechanical properties of PorelTM fiber.
The main influence factors for fiber mechanical behavior are morphological structure, crystallinity and molecular orientation.
Effect of treatment temperature on the mechanical properties of PorelTM fiber.
The effect of treatment temperature on PorelTM fiber’s mechanical properties are showed in Fig.2.
Effect of treatment time on the mechanical properties of PorelTM fiber.
Online since: August 2013
Authors: Qi Zhou, Yan Yi Yin
Control factors of Chang 4+5 reservoir properties in Jiyuan Oilfield
Qi Zhou, Yanyi Yin
Northeast petroleum university at Qinhuangdao,Qinhuangdao,China
qizh_dq@yahoo.com.cn
Keywords: ultra-low permeability reservoirs; storage potential; sedimentation; diagenesis; porosity evolution; Chang 4+5; Jiyuan Oilfield
Abstract.
Sedimentary factor includes lithology and sedimentary facies, two basic factors affecting the storage potential.
Therefore, reservoir properties are jointly controlled by sedimentation and diagenesis.
Analysis of factors affecting the storage potential Pore type and porosity are the results of sedimentation-diagenesis evolution, and under certain sedimentary conditions, their main influence is manifested in the process of diagenesis evolution.
Mechanical compaction and cementation undermine the storage potential, and are the factors directly resulting in the reduction of the rock pore volume.
Sedimentary factor includes lithology and sedimentary facies, two basic factors affecting the storage potential.
Therefore, reservoir properties are jointly controlled by sedimentation and diagenesis.
Analysis of factors affecting the storage potential Pore type and porosity are the results of sedimentation-diagenesis evolution, and under certain sedimentary conditions, their main influence is manifested in the process of diagenesis evolution.
Mechanical compaction and cementation undermine the storage potential, and are the factors directly resulting in the reduction of the rock pore volume.
Online since: December 2011
Authors: Yun Hai Su, Zheng Jun Liu, Chu Ao Wang, Fu Dong Zhao, Le Cheng Li
aLiuzhengjun1962@163.com,b490179503@qq.com, csu_yunhai@yahoo.com.cn,d174783196@qq.com,e494700826@qq.com
Key words: acicular ferrite; high-tensile steel; low matched; mechanical property; microstructure
Abstract: In order to investigate the effect of heat input on the microstructure and mechanical properties of low matched high-tensile steel welded joint, the metallurgical structure and mechanical properties of welded joint obtained with different heat input were analyzed using optical microscope , welded joint tensile test and impact test of weld metal.
Welding heat input is one of the most important factors to determine the weld metal microstructure and performance.
Therefore integrated the both factors, the content of acicular ferrite initially increases and then decreases with the increase of the heat input.
Therefore integrated the both factors,, the tensile strength of weld joint initially increases and then decreases.
[4] Ma Chengyong,Tian Zhiling and Du Zeyu, et al:Effect of heat input on structure and mechanical properties of welded joint in a 800MPa grade RFC steel.
Welding heat input is one of the most important factors to determine the weld metal microstructure and performance.
Therefore integrated the both factors, the content of acicular ferrite initially increases and then decreases with the increase of the heat input.
Therefore integrated the both factors,, the tensile strength of weld joint initially increases and then decreases.
[4] Ma Chengyong,Tian Zhiling and Du Zeyu, et al:Effect of heat input on structure and mechanical properties of welded joint in a 800MPa grade RFC steel.
Online since: November 2013
Authors: Pavol Hvizdoš, Sergej Hloch, Dagmar Jakubéczyová, Peter Monka, Ján Kľoc, Ján Balko
Local mechanical properties of various bone cements
Pavol Hvizdoš1*, Dagmar Jakubéczyová1, Sergej Hloch2, Ján Kľoc3,
Ján Balko1 and Peter Monka2
1Institute of Materials Research, Slovak Acad. of Sciences, Watsonova 47, 04353 Košice, Slovakia
2 Faculty of Manufacturing Technologies, Technical University Košice with a seat in Prešov, Bayerova 1, 080 01 Prešov, Slovakia
3 Faculty of Health Care of Prešov University, Partizánska 1, 080 01 Prešov, Slovakia
aphvizdos@imr.saske.sk
Keywords: Mechanical properties, bone cement, hardness, elasticity modulus.
Local mechanical properties (nano-hardness, elasticity modulus) of all experimental states were measured by nanoindentation technique and compared.
Although the mechanical properties and exothermic behaviour as well as other factors affecting their overall performance has been examined extensively, the mechanical properties of bone/bone cement interface under load bearing are not fully understood.
However, many studies [6, 7] indicate that in practice elution of antibiotics in blood and body fluids rapidly, within several hours or few days, creates channels and pores within the matrix and compromises the mechanical properties of bone cement.
Vacuum mixing lowered porosity and present doses of antibiotics did not compromise the measured mechanical properties of the freshly made samples.
Local mechanical properties (nano-hardness, elasticity modulus) of all experimental states were measured by nanoindentation technique and compared.
Although the mechanical properties and exothermic behaviour as well as other factors affecting their overall performance has been examined extensively, the mechanical properties of bone/bone cement interface under load bearing are not fully understood.
However, many studies [6, 7] indicate that in practice elution of antibiotics in blood and body fluids rapidly, within several hours or few days, creates channels and pores within the matrix and compromises the mechanical properties of bone cement.
Vacuum mixing lowered porosity and present doses of antibiotics did not compromise the measured mechanical properties of the freshly made samples.