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Online since: February 2020
Authors: Mohammed Salih Hassan, Haideer Talib Shomran, Jabbar A. Jaber
The width of the Kerf and surface roughness are the most factors which needs for focusing during cutting process for various plate cutting operation by CNC machine.
Its concluded from our result, that the characteristics of the main selecting factors which effects the laser machine performance such as, the focal lens nozzle height (0.6 to 1.0mm) and the ability and speed of cutting should be fixed and not changing.
However, heat may transfer to the material and affects adversely the cutting quality and accuracy.
Improving the properties of laser cutting can achived by several steps like cleanliness of the lens, correction of the focal path as well as the ability of high and constant cutting will gives high cleanliness without impact on the surface of the cut.
Silva, Stainless steel plate cutting: thermal and mechanical cutting.
Its concluded from our result, that the characteristics of the main selecting factors which effects the laser machine performance such as, the focal lens nozzle height (0.6 to 1.0mm) and the ability and speed of cutting should be fixed and not changing.
However, heat may transfer to the material and affects adversely the cutting quality and accuracy.
Improving the properties of laser cutting can achived by several steps like cleanliness of the lens, correction of the focal path as well as the ability of high and constant cutting will gives high cleanliness without impact on the surface of the cut.
Silva, Stainless steel plate cutting: thermal and mechanical cutting.
Online since: May 2013
Authors: Wen Zheng Wu, Ji Zhao, Lei Zhang, Di Zhao, Yu Zhang, Wan Shan Wang, Xing Tian Qu
The optimization design of dental implant after the mandible tumor resection and reconstruction
Wenzheng Wu1, a, Ji Zhao1, b, Lei Zhang1, c, Xingtian Qu1, Di Zhao1, Yu Zhang1, Wanshan Wang2
1School of Mechanical Science and Engineering, Jilin University, Changchun, Jilin 130025, China
2School of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning 110819, China
a wenzheng.wu@gmail.com; b jzhao@jlu.edu.cn; c zhanglei@jlu.edu.cn
Keywords: Optimization design, FEA, Biomechanical analysis, Dental implant
Abstract.
The lessened two implants will affect the deformation.
Wu et al., Dental Implants and Factors Influencing Their Failure: A Systematic Review.
Oettinger-Barak et al., Dental implants placed in previously failed sites: survival rate and factors affecting the outcome.
Fojt, The effect of porosity on barrier properties of DLC layers for dental implants.
The lessened two implants will affect the deformation.
Wu et al., Dental Implants and Factors Influencing Their Failure: A Systematic Review.
Oettinger-Barak et al., Dental implants placed in previously failed sites: survival rate and factors affecting the outcome.
Fojt, The effect of porosity on barrier properties of DLC layers for dental implants.
Online since: March 2009
Authors: Kari Mäntyjärvi, Markku Keskitalo
The mechanical properties were tested with
tensile tests.
The plates were cut from three cold-rolled coil consignments with small deviations in their mechanical properties.
The measured Cutting Edge Factors are shown in Table 5.
Cutting edge factors of weld edges Test no.
Typically, the mechanical properties of laser welds are better than those of conventional welds [7].
The plates were cut from three cold-rolled coil consignments with small deviations in their mechanical properties.
The measured Cutting Edge Factors are shown in Table 5.
Cutting edge factors of weld edges Test no.
Typically, the mechanical properties of laser welds are better than those of conventional welds [7].
Online since: December 2014
Authors: Emilia Wołowiec, Beata Majkowska, Magadalena Jażdżewska, Damian Miotke, Andrzej Zieliński
Besides, the movement kinematics is determined by a number of external factors, such as: type of the movement, the load friction, the shape of the cooperating surfaces, the surface roughness, the type of lubricant, and finally the type of material association.
The last factors in addition plays a critical role in the effects on the body of the implant.
In this aspect, particularly important is the appropriate selection of biomaterials concerning their mechanical properties and clinical aspect of reducing their tribological wear during exploitation.
One of the limitations affecting the use of titanium alloys for knee endoprostheses is their low wear resistance resulting from the low tribological properties and high friction coefficient [4].
Bressiani, Mechanical properties and cytotoxic evaluation of the Ti-13Nb-13Zr alloy, Biomecanica, 8 (1), 2000
The last factors in addition plays a critical role in the effects on the body of the implant.
In this aspect, particularly important is the appropriate selection of biomaterials concerning their mechanical properties and clinical aspect of reducing their tribological wear during exploitation.
One of the limitations affecting the use of titanium alloys for knee endoprostheses is their low wear resistance resulting from the low tribological properties and high friction coefficient [4].
Bressiani, Mechanical properties and cytotoxic evaluation of the Ti-13Nb-13Zr alloy, Biomecanica, 8 (1), 2000
Online since: January 2016
Authors: Ming Chen, Hong Zhou Zhang, Chang Ying Wang, Cheng Dong Wang, Qing Long An, Liang Wen
Machined surface quality is the deciding factor when evaluating the machinability of CFRP.
Introduction As one of the most representative fiber reinforced composites, carbon fiber reinforced polymer (CFRP) has many superior material properties such as high specific strength, high specific stiffness, high resistance to corrosion and low thermal expansion coefficient.
The physical and mechanical properties of the unidirectional CFRP laminate are presented in Table 1.
Table 1 Physical and mechanical properties of T800/X850 CFRP.
The machined surface quality may drastically affect the strength and the chemical resistance of the components.
Introduction As one of the most representative fiber reinforced composites, carbon fiber reinforced polymer (CFRP) has many superior material properties such as high specific strength, high specific stiffness, high resistance to corrosion and low thermal expansion coefficient.
The physical and mechanical properties of the unidirectional CFRP laminate are presented in Table 1.
Table 1 Physical and mechanical properties of T800/X850 CFRP.
The machined surface quality may drastically affect the strength and the chemical resistance of the components.
Online since: February 2012
Authors: J. Ramli, D.N. Awang Sh’ri, Yusof Nor Imrah, M.M. Mahat, Nasrul Azuan Alang
Effects of Surface Pretreatment to the Properties of Aluminum Oxide (Al2O3) Cutting Tool Coated Amorphous Graphite
J.
In addition, some paper has reported on the deposition of Titanium Oxide (TiO2) thin film on substrate in an attempt to study the behavior of adhesion properties, wear and scratch resistance of TiO2 films.
Surface roughness is one of the key factors determining the performance of coated tools.
Conclusions In this research, effect of surface pretreatment to the properties of amorphous graphite coated on the cutting tool has been observed.
Laugier., Study of mechanical properties of CVD diamond on SiC substrates.
In addition, some paper has reported on the deposition of Titanium Oxide (TiO2) thin film on substrate in an attempt to study the behavior of adhesion properties, wear and scratch resistance of TiO2 films.
Surface roughness is one of the key factors determining the performance of coated tools.
Conclusions In this research, effect of surface pretreatment to the properties of amorphous graphite coated on the cutting tool has been observed.
Laugier., Study of mechanical properties of CVD diamond on SiC substrates.
Online since: November 2011
Authors: Yi Dan Zhou, Tao Wang
The cutting condition and material properties are summarized in Table 1.
Table 1 Cutting condition and Material properties of 42CrMo for FEM simulations Cutting parameters 42CrMo workpiece properties Cutting speed (m/min) 100 Yield strength(MPa) 930 Tool point angle(°) 140 Tensile strength (MPa) 1080 Tool Diameter(mm) 10 Section shrinkage (%) 50 Tool clearance angle(°) 7 Hardness (HB) 270 Tool helix angle(°) 30 Impact toughness (J/cm2) 78 Tool chisel edge angle(°) 48 Elongation (%) 15 Tool edge radius(mm) 0.03,0.06,0.10 Impact energy (J) 63 Geometric Model.
In this paper, the highest simulation temperature is about 1411℃.The cutting process is a very complicated deformation process, there are many factors need to be considered.
Due to the limitation of calculate condition and mesh re-classified, the curves of the maximum temperature sometimes fluctuate dramatically, however, it does not affect the analysis of simulation.
However, it does not affect the study on the simulation.
Table 1 Cutting condition and Material properties of 42CrMo for FEM simulations Cutting parameters 42CrMo workpiece properties Cutting speed (m/min) 100 Yield strength(MPa) 930 Tool point angle(°) 140 Tensile strength (MPa) 1080 Tool Diameter(mm) 10 Section shrinkage (%) 50 Tool clearance angle(°) 7 Hardness (HB) 270 Tool helix angle(°) 30 Impact toughness (J/cm2) 78 Tool chisel edge angle(°) 48 Elongation (%) 15 Tool edge radius(mm) 0.03,0.06,0.10 Impact energy (J) 63 Geometric Model.
In this paper, the highest simulation temperature is about 1411℃.The cutting process is a very complicated deformation process, there are many factors need to be considered.
Due to the limitation of calculate condition and mesh re-classified, the curves of the maximum temperature sometimes fluctuate dramatically, however, it does not affect the analysis of simulation.
However, it does not affect the study on the simulation.
Online since: January 2015
Authors: Svetlana Belyaeva, Yury Barabanshchikov, Maikel Perez, Arina Avdeeva
Shows the influence of the proportion of glass reinforcement on the physico-mechanical properties of rod fiberglass reinforcement.
Fig. 2 Dependence of strain of time exposure Conclusion Water absorption is not dependent on the degree of reinforcement and divergence of results due, apparently, technological factors.
In addition to the mechanical properties of the percentage content of reinforcing filler affects the porosity which can be attributed to incomplete impregnation of the fiber-shaped filler.
Mechanical properties of glass-fiber reinforcement along the reinforcing fibers increases almost linearly with the degree of reinforcement.
Deformation properties, on the contrary, decreased with increasing content of fiberglass reinforcement reinforcing fibers.
Fig. 2 Dependence of strain of time exposure Conclusion Water absorption is not dependent on the degree of reinforcement and divergence of results due, apparently, technological factors.
In addition to the mechanical properties of the percentage content of reinforcing filler affects the porosity which can be attributed to incomplete impregnation of the fiber-shaped filler.
Mechanical properties of glass-fiber reinforcement along the reinforcing fibers increases almost linearly with the degree of reinforcement.
Deformation properties, on the contrary, decreased with increasing content of fiberglass reinforcement reinforcing fibers.
Online since: February 2021
Authors: Pornkiat Churnjitapirom, Sroisiri Thaweboon, Pornrachanee Sawaengkit, Thongchai Poonpiriya
Many modifications of PMMA resin have been studied in order to improve the physical and mechanical properties of the material by altering the curing process or by incorporating or coating with additional substances such as fibres, fillers, metal oxides, and hybrid reinforcements.
To overcome this, addition of substances such as silver or titanium nanoparticles has been demonstrated to provide antimicrobial properties for PMMA resin by reducing microbial adhesion [3], but in turn may affect the mechanical properties of the material [4].
Besides, it has been shown that the type and volume of small parts of fillers in the structure of PMMA resins would affect its water absorption and solubility properties [16, 18].
Many other factors potentially impact the water solubility properties of resin, including filler concentration, mean particle size, surface area of the filler particles, coupling agent, and the type of particles themselves [18].
Turkyilmaz, Influence of various metal oxides on mechanical and physical properties of heat-cured polymethyl methacrylate denture base resins, J.
To overcome this, addition of substances such as silver or titanium nanoparticles has been demonstrated to provide antimicrobial properties for PMMA resin by reducing microbial adhesion [3], but in turn may affect the mechanical properties of the material [4].
Besides, it has been shown that the type and volume of small parts of fillers in the structure of PMMA resins would affect its water absorption and solubility properties [16, 18].
Many other factors potentially impact the water solubility properties of resin, including filler concentration, mean particle size, surface area of the filler particles, coupling agent, and the type of particles themselves [18].
Turkyilmaz, Influence of various metal oxides on mechanical and physical properties of heat-cured polymethyl methacrylate denture base resins, J.
Online since: October 2006
Authors: Hee Dong Kim
Introduction
The failure of the stator insulation in rotating machines is closely related to the properties of its
component materials.
These material properties are affected by exposure to a combination of thermal, electrical, mechanical and environmental stresses during operation.
Deterioration will occur in insulation that has voids created by electrical and mechanical stress.
Tip-up dissipation factor (∆tan�) is the differences between measurements at 2 kV and at 6.6 kV.
∆tan� indicates increase of dissipation factor due to applied voltage.
These material properties are affected by exposure to a combination of thermal, electrical, mechanical and environmental stresses during operation.
Deterioration will occur in insulation that has voids created by electrical and mechanical stress.
Tip-up dissipation factor (∆tan�) is the differences between measurements at 2 kV and at 6.6 kV.
∆tan� indicates increase of dissipation factor due to applied voltage.