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Online since: November 2013
Authors: C.S. Ramesh, M.L. Shreeshail, Harsha R. Gudi, Khan Zulfiqar
Currently, the focus in materials development is on processing of hybrid metal matrix composites (MMC’s) in particular aluminum (Al) based owing to their flexibility in achieving tailor made properties.
Till date, only processing, characterization of mechanical and adhesive wear behavior of various hybrid MMCs have received much attention.
A blend of the above two processes will positively bring out enhanced homogeneity, greater volume incorporation of reinforcements, leading to production of light weight large structures with improved mechanical and tribological properties of the composites [1].
Factors such as impingement angle, impact velocity, erodent size and amount of reinforcement are the major factors affecting the erosion rate of composites [12,8].
[7] Tamer Sinmazcelik, Sinan Fidan and Volkan Gunay, Residual mechanical properties of carbon/polyphenylenesulphide composites after solid particle erosion, Materials and Design Vol. 29, (2008) 1419–1426
Till date, only processing, characterization of mechanical and adhesive wear behavior of various hybrid MMCs have received much attention.
A blend of the above two processes will positively bring out enhanced homogeneity, greater volume incorporation of reinforcements, leading to production of light weight large structures with improved mechanical and tribological properties of the composites [1].
Factors such as impingement angle, impact velocity, erodent size and amount of reinforcement are the major factors affecting the erosion rate of composites [12,8].
[7] Tamer Sinmazcelik, Sinan Fidan and Volkan Gunay, Residual mechanical properties of carbon/polyphenylenesulphide composites after solid particle erosion, Materials and Design Vol. 29, (2008) 1419–1426
Online since: August 2017
Authors: Ganesh R. Karthikeyan, S. Vincent, Ketul Arvindbhai Patel
Determining mechanical properties of Bulk Metallic Glasses (BMGs) requires synthesizing of the alloys in bulk form.
The introduction of crystalline phases at right fractions and sizes, have improved the mechanical properties [3, 4].
The mechanical properties of each of the three regions were then assigned to its respective pixel groups for the analysis.
These mechanical properties include Young’s Modulus (E) and Poisson ratio (v).
[20] Kawahara K, Kaneno Y, Kakitsuji A, Takasugi T, Microstructural factors affecting hardness property of dual two-phase intermetallic alloys based on Ni3Al–Ni3V pseudo-binary alloy system, Intermetallics 17. (2009) 938-944.
The introduction of crystalline phases at right fractions and sizes, have improved the mechanical properties [3, 4].
The mechanical properties of each of the three regions were then assigned to its respective pixel groups for the analysis.
These mechanical properties include Young’s Modulus (E) and Poisson ratio (v).
[20] Kawahara K, Kaneno Y, Kakitsuji A, Takasugi T, Microstructural factors affecting hardness property of dual two-phase intermetallic alloys based on Ni3Al–Ni3V pseudo-binary alloy system, Intermetallics 17. (2009) 938-944.
Online since: August 2016
Authors: Lukáš Balík, Tomáš Bittner, Šárka Nenadálová, Milan Rydval
In the paper there are summarized results of diffusion properties of mortars.
Water vapour permeability represented by diffusion thicknesses and water vapour resistance factors are except mechanical properties the most important physical parameters of historic buildings.
Everything depends on a type of binder, a material of a structure itself and primarily on properties of mortar and plaster and finishing.
These properties were determined before tests of diffusion parameters.
How relative humidity affected water vapour resistance factor is possible to see in following Tab. 10.
Water vapour permeability represented by diffusion thicknesses and water vapour resistance factors are except mechanical properties the most important physical parameters of historic buildings.
Everything depends on a type of binder, a material of a structure itself and primarily on properties of mortar and plaster and finishing.
These properties were determined before tests of diffusion parameters.
How relative humidity affected water vapour resistance factor is possible to see in following Tab. 10.
Online since: April 2008
Authors: Yan Jin Guan, Jie Liu, Sheng Sun, Guang Chun Wang
Considering the relationship of material properties and temperature, a 3-D
thermal-mechanical finite element analysis model for laser micro-bending of stainless steel foil is
developed based on the software MSC.Marc, and the laser micro-bending process of 0.1mm thick
stainless steel foil is implemented.
(2) Design variables: P, D, V There are many factors that influence the forming process, such as energy factors (laser power, laser scanning velocity, laser beam diameter, absorption coefficient, etc.), geometrical factors (sheet thickness, sheet width), and material property parameters (thermal, physical and mechanical property parameters).
Generally, geometrical factors and material property parameters are constant for a definite laser micro-bending process.
The relationships between material properties with temperature are considered.
In this paper the material of AISI 304 stainless steel is used and the materials properties depend on temperature are considered [8].
(2) Design variables: P, D, V There are many factors that influence the forming process, such as energy factors (laser power, laser scanning velocity, laser beam diameter, absorption coefficient, etc.), geometrical factors (sheet thickness, sheet width), and material property parameters (thermal, physical and mechanical property parameters).
Generally, geometrical factors and material property parameters are constant for a definite laser micro-bending process.
The relationships between material properties with temperature are considered.
In this paper the material of AISI 304 stainless steel is used and the materials properties depend on temperature are considered [8].
Online since: June 2015
Authors: S. Thirumalai Kumaran, Marimuthu Uthayakumar, P. Mathiyazhagan, K. Krishna Kumar, P. Muthu Kumar
They developed a mathematical model to correlate the machining performance and reported that the the pump pressure is the most significant parameter affecting the Ra.
The selected factors and levels are listed in Table 2.
Both the selected abrasives produced a similar result, which shows that the particle size has no influence in affecting the MRR at high pressure.
· The particle size has no influence in affecting the MRR at high pressure.
Shipway, Abrasive waterjet cutting of a titanium alloy: The influence of abrasive morphology and mechanical properties on workpiece grit embedment and cut quality, Journal of Materials Processing Technology 210 (2010) 2197-2205
The selected factors and levels are listed in Table 2.
Both the selected abrasives produced a similar result, which shows that the particle size has no influence in affecting the MRR at high pressure.
· The particle size has no influence in affecting the MRR at high pressure.
Shipway, Abrasive waterjet cutting of a titanium alloy: The influence of abrasive morphology and mechanical properties on workpiece grit embedment and cut quality, Journal of Materials Processing Technology 210 (2010) 2197-2205
Online since: August 2025
Authors: Nathi Ram Chauhan, Priyanka Singh
Microalgae has exceptional chemical compositions, including significant levels of lipids, hydrocarbons, polysaccharides, and gelling properties.
Partners in the contact interact with the friction surface zone, biolubricants improve the functionality of mechanical parts.
The main factors affecting the lubricity of bio-oils are unsaturation of fatty acids, branching, polarity and chain length.
Microalgal bio-oils also have better antiwear and antiseizure properties and lubricating effectiveness is almost twice in the coated material systems.
Rheological properties of microalgae oil are very suitable as a bio lubricant.
Partners in the contact interact with the friction surface zone, biolubricants improve the functionality of mechanical parts.
The main factors affecting the lubricity of bio-oils are unsaturation of fatty acids, branching, polarity and chain length.
Microalgal bio-oils also have better antiwear and antiseizure properties and lubricating effectiveness is almost twice in the coated material systems.
Rheological properties of microalgae oil are very suitable as a bio lubricant.
Online since: April 2004
Authors: Sang Ll Lee, Jong K. Lee, J.Y. Park, J.S. Park, Han Ki Yoon, J.O. Jin, Byeong Hyeon Min
The
microstructures and the mechanical properties of MoSi2 based composites were investigated by
means of SEM, EDS, XRD and three point bending test.
1.
Especially, the high temperature mechanical properties of MoSi2 based composites are a very important factor for their practical applications.
The full density must be also secured for the high temperature applications of MoSi2 based composites, since the porosity created under consolidation processes affects mechanical properties and oxidation behaviors of the material.
Mechanical properties of monolithic MoSi2 and MoSi2 based composite materials were evaluated using three point bending tests.
Such a thermodynamic analysis by the reaction of MoSi2 and ZrO2 was confirmed in the previous results [13]. 3.2 Mechanical properties Fig. 4 shows the effect of SiC, NbSi2 and ZrO2 particles on the room temperature mechanical properties of monolithic MoSi2 material.
Especially, the high temperature mechanical properties of MoSi2 based composites are a very important factor for their practical applications.
The full density must be also secured for the high temperature applications of MoSi2 based composites, since the porosity created under consolidation processes affects mechanical properties and oxidation behaviors of the material.
Mechanical properties of monolithic MoSi2 and MoSi2 based composite materials were evaluated using three point bending tests.
Such a thermodynamic analysis by the reaction of MoSi2 and ZrO2 was confirmed in the previous results [13]. 3.2 Mechanical properties Fig. 4 shows the effect of SiC, NbSi2 and ZrO2 particles on the room temperature mechanical properties of monolithic MoSi2 material.
Online since: October 2013
Authors: Da Hai Wang, Hao Ran Guo, Yan Wei Guo, Hui Zhao
Principal influencing factors of the strength of rock mass with weak joints were studied in this paper.
Introduction The rock mass strength is one of the main parameters that determine the mechanical property of rock mass.
It is difficult to simulate influences of the two factors to rock mass strength in laboratory tests, because it is difficult to find two samples which are exactly the same except for the dip angles or the confining pressures.
The strain-softening /hardening plasticity model is used to simulate the mechanical behaviors of the samples.
The compression strength increases linearly with the increase of confining pressure if other properties are the same.
Introduction The rock mass strength is one of the main parameters that determine the mechanical property of rock mass.
It is difficult to simulate influences of the two factors to rock mass strength in laboratory tests, because it is difficult to find two samples which are exactly the same except for the dip angles or the confining pressures.
The strain-softening /hardening plasticity model is used to simulate the mechanical behaviors of the samples.
The compression strength increases linearly with the increase of confining pressure if other properties are the same.
Online since: February 2018
Authors: Wen Guo Huo, Juan Shao, Xiang Yu Zhang, Qing Yun Dong
Introduction
Ti6Al4V alloy is an important alloy of titanium due to its peculiar behavior and mechanical properties [1].
The higher specific energy requirement in grinding, results in the higher heat generation which eventually raises the grinding zone temperature adversely affecting the ground product quality as well as wheel wear.
As the properties of the Ti6Al4V were defined in the material library of DEFORM 3D, the thermo mechanical properties given in Table 2 are fed as input to define the work material.
The mechanical properties of the work material is given in Table5.Cutting experiments were conducted to validate the three-dimensional FE model.
Table 5.Thermo-mechanical properties of the Ti6Al4V alloy.
The higher specific energy requirement in grinding, results in the higher heat generation which eventually raises the grinding zone temperature adversely affecting the ground product quality as well as wheel wear.
As the properties of the Ti6Al4V were defined in the material library of DEFORM 3D, the thermo mechanical properties given in Table 2 are fed as input to define the work material.
The mechanical properties of the work material is given in Table5.Cutting experiments were conducted to validate the three-dimensional FE model.
Table 5.Thermo-mechanical properties of the Ti6Al4V alloy.
Online since: January 2012
Authors: Xin Ge, Jong Hyuk Lim, Min Su Kim, Ur Ryong Cho, Mei Chun Li
Mechanical properties of M-starch/SBR biocomposites were superior than those of unmodified starch/SBR biocomposites.
Several research showed that particle size, dispersion and compatibility were important factors on the properties of starch/rubber composites.
And particle size of starch significantly affected the mechanical property of composites.
Results and Discussion Mechanical Properties.
Coupling agent SMA acted as crosslinking core and therefore improved the mechanical properties.
Several research showed that particle size, dispersion and compatibility were important factors on the properties of starch/rubber composites.
And particle size of starch significantly affected the mechanical property of composites.
Results and Discussion Mechanical Properties.
Coupling agent SMA acted as crosslinking core and therefore improved the mechanical properties.