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Online since: May 2020
Authors: Pisutti Dararutana, Kanjana Thamanu, Krit Won-In
Dynamic mechanical, thermal and tensile properties are also studied.
The physical properties, such as thermal degradation, dynamic mechanical and tensile properties are also analyzed.
It was reported by other authors that the changes of the dynamic mechanical properties, such as storage modulus (Eʹ), loss modulus (Eʺ) and loss factor (tanδ) were varied with the increasing of the temperature and frequency [13-21].
Huang, Research on the dynamic mechanical properties of polyureas based on polyaspartic esters, Journal of Wuhan University of Technology. 29(4) (2007) 61-63
Oprea, Effect of polyols on the physico-mechanical properties of some polyurethanes, Journal of Optoelectronics and Advanced Materials. 9(4) (2007) 994-999
The physical properties, such as thermal degradation, dynamic mechanical and tensile properties are also analyzed.
It was reported by other authors that the changes of the dynamic mechanical properties, such as storage modulus (Eʹ), loss modulus (Eʺ) and loss factor (tanδ) were varied with the increasing of the temperature and frequency [13-21].
Huang, Research on the dynamic mechanical properties of polyureas based on polyaspartic esters, Journal of Wuhan University of Technology. 29(4) (2007) 61-63
Oprea, Effect of polyols on the physico-mechanical properties of some polyurethanes, Journal of Optoelectronics and Advanced Materials. 9(4) (2007) 994-999
Online since: January 2013
Authors: Yong Yu, Bing Hui Li, Dan Xu
Where the carrier bracket as extra cellular matrix substitutes, it is one of the most critical factors, which directly affect the later cartilage cells on the adhesion, growth and extra cellular matrix secretion.
The research progress of cartilage repair in athletic injury The source of seed cells and Vector properties are 2 key factors in cartilage tissue engineering techniques.
The physicochemical properties and composition ratio of Scaffold materials can influence its physical properties and microstructure.
For example, the main physical and mechanical properties and microstructure of CPPf/PLLA scaffolds composites materials were determined by its Composition and physicochemical properties of content ratio.
Polylactic acid not only has good physical and mechanical properties, but also a mature processing technology compared with natural extra cellular matrix.
The research progress of cartilage repair in athletic injury The source of seed cells and Vector properties are 2 key factors in cartilage tissue engineering techniques.
The physicochemical properties and composition ratio of Scaffold materials can influence its physical properties and microstructure.
For example, the main physical and mechanical properties and microstructure of CPPf/PLLA scaffolds composites materials were determined by its Composition and physicochemical properties of content ratio.
Polylactic acid not only has good physical and mechanical properties, but also a mature processing technology compared with natural extra cellular matrix.
Online since: October 2010
Authors: Shu Bo Li, Ya Ling Qin, Han Li, Wen Bo Du
The best mechanical properties were also identified as 394 MPa ultimate strength, and 363 MPa yield strength, when 200 RPW cycles were used.
Properties of composites are affected by the type of reinforcement, the choice of matrix alloy and the manufacturing techniques.
Therefore, taking the above factors, the Mg2Si/Mg-5Zn-2.5Er composite materials reached the optimum properties when the number of RPW cycle was 200.
(3) The mechanical properties of Mg2Si/Mg-5Zn-2.5Er composite materials were significantly improved during the RPW .
When 200 RPW cycles were used, the best mechanical properties were achieved as 394 MPa ultimate strength , and 363 MPa yield strength.
Properties of composites are affected by the type of reinforcement, the choice of matrix alloy and the manufacturing techniques.
Therefore, taking the above factors, the Mg2Si/Mg-5Zn-2.5Er composite materials reached the optimum properties when the number of RPW cycle was 200.
(3) The mechanical properties of Mg2Si/Mg-5Zn-2.5Er composite materials were significantly improved during the RPW .
When 200 RPW cycles were used, the best mechanical properties were achieved as 394 MPa ultimate strength , and 363 MPa yield strength.
Online since: February 2014
Authors: Jie Jin, Wei Zhou, Wen Liang Li, Fu Ming Qin
Analyzed and researched systems that affecting vehicle’s stability performance, including power train, steering system, brake system and the vehicle’s road model of the system curve .On this basis, compared to the acceleration values which the motorbus body can withstand in different states, proposing the acceleration values when human feel comfortable, uncomfortable and terrible, then conducted simulation tests under different turning radius and speeds.
When the outside wheels’ vertical forces are zero, the quasi-static value of the threshold is: (12) Under the large lateral acceleration which the lateral acceleration reaches 0.3g or 0.4g, the tire cornering properties has entered the nonlinear region, the body’s the instability factor has been increased.
Conclusions The main factors that affect the vehicle’s stability are: driving speed, road turning radius, road adhesion coefficient and wind direction, etc.
Mechanical Science and Technology, 2007, 26 (3):355-358
Beijing: Mechanical Industry Press (Fifth Edition), 2009.3 [7] Xu Xiaomei.
When the outside wheels’ vertical forces are zero, the quasi-static value of the threshold is: (12) Under the large lateral acceleration which the lateral acceleration reaches 0.3g or 0.4g, the tire cornering properties has entered the nonlinear region, the body’s the instability factor has been increased.
Conclusions The main factors that affect the vehicle’s stability are: driving speed, road turning radius, road adhesion coefficient and wind direction, etc.
Mechanical Science and Technology, 2007, 26 (3):355-358
Beijing: Mechanical Industry Press (Fifth Edition), 2009.3 [7] Xu Xiaomei.
Online since: October 2011
Authors: Shih Hsien Chang, Kuo Tsung Huang, Cheng Liang, Shih Chin Lee
The experimental results indicated that Laves and δ precipitations obviously appeared within the grain boundary, under HIP treatment and lower solid-solution temperatures (940°C), which would result in poor mechanical properties.
Alloy 718 has been widely used in gas turbine and related aerospace applications due to its good mechanical properties and structure stability at elevated temperature [4,5].
The solid-solution and aging treatments would significantly affect the precipitations and properties of the alloy 718.
Increasing the precipitation amount of niobium will increase γ˝ precipitations which are advantageous to mechanical properties.
The optimal mechanical properties appeared in the A-S1020 specimens, it can increase tensile strength to 1331.53 MPa, and yield strength was 1201.63 MPa.
Alloy 718 has been widely used in gas turbine and related aerospace applications due to its good mechanical properties and structure stability at elevated temperature [4,5].
The solid-solution and aging treatments would significantly affect the precipitations and properties of the alloy 718.
Increasing the precipitation amount of niobium will increase γ˝ precipitations which are advantageous to mechanical properties.
The optimal mechanical properties appeared in the A-S1020 specimens, it can increase tensile strength to 1331.53 MPa, and yield strength was 1201.63 MPa.
Online since: April 2020
Authors: Irina G. Endzhievskaya, Nina G. Vasilovskaya, Oksana V. Gofman, Nadezhda Y. Klindukh, Vladislav A. Kulik
However, one of the limiting factors of the expansion of the product range is that in many regions there is a significant shortage of high-quality clay raw materials to ensure their high strength and crack resistance.
Therefore, the inclusion of additional mechanical treatment in the technology of wall ceramics will allow us to obtain a homogenous workable homogeneous mass and significantly improve the physical and mechanical properties of products [3].
In the study of the South Ural State University (Chelyabinsk), the following methods are used to improve the physicomechanical characteristics: mechanical activation, ultrasound and electromagnetic impulses [5], which favorably affects the rheological properties of clay suspensions.
Turgut, Effects of ultrasonication and conventional mechanical homogenization processes on the structures and dielectric properties of BaTiO3 ceramics, Ultrason Sonochem. 34 (2017) 873-880
Walker, Ultrasonic control of ceramic membrane fouling by particles: effect of ultrasonic factors, Ultrason Sonochem., 13 (2006) 379-387
Therefore, the inclusion of additional mechanical treatment in the technology of wall ceramics will allow us to obtain a homogenous workable homogeneous mass and significantly improve the physical and mechanical properties of products [3].
In the study of the South Ural State University (Chelyabinsk), the following methods are used to improve the physicomechanical characteristics: mechanical activation, ultrasound and electromagnetic impulses [5], which favorably affects the rheological properties of clay suspensions.
Turgut, Effects of ultrasonication and conventional mechanical homogenization processes on the structures and dielectric properties of BaTiO3 ceramics, Ultrason Sonochem. 34 (2017) 873-880
Walker, Ultrasonic control of ceramic membrane fouling by particles: effect of ultrasonic factors, Ultrason Sonochem., 13 (2006) 379-387
Online since: April 2011
Authors: S.M. Darwish, H. Fouad
The wear of the hip joint is considered as one of the main factors that affect the long term performance of the implant.
The hip joint polymeric cup is usually made of UHMWPE due to its good mechanical properties and excellent biocompatibility [8-13].
Among them, loosening due to wear of polymeric cup has been one of the main factors that affect the long-term stability of the total hip arthroplasty.
Therefore, several attempts have been made to improve the wear properties of the polymeric cup with the aim of improving the long term performance of the total hip joint prostheses [4, 7-9].
Past theoretical work focused upon that the femoral head diameter, material and ball/cup clearance were identified as the most important factors influencing the resultant contact pressure on the hip joint cup [21-24].
The hip joint polymeric cup is usually made of UHMWPE due to its good mechanical properties and excellent biocompatibility [8-13].
Among them, loosening due to wear of polymeric cup has been one of the main factors that affect the long-term stability of the total hip arthroplasty.
Therefore, several attempts have been made to improve the wear properties of the polymeric cup with the aim of improving the long term performance of the total hip joint prostheses [4, 7-9].
Past theoretical work focused upon that the femoral head diameter, material and ball/cup clearance were identified as the most important factors influencing the resultant contact pressure on the hip joint cup [21-24].
Online since: January 2017
Authors: Dong Lin Zhao, Ran Ran Yao, Dong Dong Zhang, Xia Jun Wang, Cheng Li
A remarkable synergetic effect between the GNSs and MWCNTs on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.
Graphene has shown many remarkable properties, such as excellent electronic transport properties, high thermal conductivity, structural, extraordinary mechanical properties, low density and large specific surface area [6].
Two factors were proposed to explain this phenomenon: (i) the contact geometry changes from 0-D point contact to 1-D linear contact, increasing the contact area within hybrid nanofillers considerably.
A remarkable synergetic effect between the AFGNS-MWCNT on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.
A remarkable synergetic effect between the GNSs and MWCNTs on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.
Graphene has shown many remarkable properties, such as excellent electronic transport properties, high thermal conductivity, structural, extraordinary mechanical properties, low density and large specific surface area [6].
Two factors were proposed to explain this phenomenon: (i) the contact geometry changes from 0-D point contact to 1-D linear contact, increasing the contact area within hybrid nanofillers considerably.
A remarkable synergetic effect between the AFGNS-MWCNT on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.
A remarkable synergetic effect between the GNSs and MWCNTs on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.
Online since: December 2004
Authors: Ai Bing Yu, Xin Li Tian, L.J. Zhong
Their properties are listed in Table 1.
Grindability affecting factors of ceramics include chemical composition, structure and property.
During ceramic grinding processes, deformation, fracture and removal of materials are closely concerned with mechanical property parameters.
The mechanical property parameters are selected to constitute alternative set U.
The maximum grinding principal stresses are related to the initiation of grinding cracks, and affect the removal of ceramics.
Grindability affecting factors of ceramics include chemical composition, structure and property.
During ceramic grinding processes, deformation, fracture and removal of materials are closely concerned with mechanical property parameters.
The mechanical property parameters are selected to constitute alternative set U.
The maximum grinding principal stresses are related to the initiation of grinding cracks, and affect the removal of ceramics.
Online since: January 2016
Authors: Mario Trotea, Gabriela Monica Pană
Also it was attempted to determine aspects regarding the causes and mechanism when these conditions affect the changes of the mechanical properties.
Also it was attempted to determine aspects regarding the causes and mechanism when these conditions affect the changes of the mechanical properties.
It is known that the softening temperature under load of the resin is 62°C and at 80°C the traction and bending properties of the resin considerably decrease [2].
The behavior to bending takes into account a number of factors.
However, normal load of thermal nature adversely affect these properties.
Also it was attempted to determine aspects regarding the causes and mechanism when these conditions affect the changes of the mechanical properties.
It is known that the softening temperature under load of the resin is 62°C and at 80°C the traction and bending properties of the resin considerably decrease [2].
The behavior to bending takes into account a number of factors.
However, normal load of thermal nature adversely affect these properties.