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Online since: November 2022
Authors: Putu Hadi Setyarini, Wahyono Suprapto, Zuliantoni Zuliantoni, Femiana Gapsari, Sudjito Sudjito, Yudy Surya Irawan
Composition and microstructure are the main factors affecting the corrosion resistance of metallic materials.
These brittle intermetallic compounds reduce the mechanical properties of the joint [16].
Aluminum-Zinc phase diagram [15] Three important factors affect corrosion resistance: the quenching rate determines the dendritic arrangement, the redistribution of solutes in the solute/solvent pair of each alloy, and the electrochemical properties. of the anode or cathode.
Yang, “Microstructure, mechanical properties and corrosion properties of Mg-Zn-Y alloys with low Zn content,” Mater.
Feng, “Effects of Zn on microstructure, mechanical properties and corrosion behavior of Mg-Zn alloys,” Mater.
These brittle intermetallic compounds reduce the mechanical properties of the joint [16].
Aluminum-Zinc phase diagram [15] Three important factors affect corrosion resistance: the quenching rate determines the dendritic arrangement, the redistribution of solutes in the solute/solvent pair of each alloy, and the electrochemical properties. of the anode or cathode.
Yang, “Microstructure, mechanical properties and corrosion properties of Mg-Zn-Y alloys with low Zn content,” Mater.
Feng, “Effects of Zn on microstructure, mechanical properties and corrosion behavior of Mg-Zn alloys,” Mater.
Online since: April 2014
Authors: Yao Hong Huang, Yong Chang Guo
Introduction
Fiber reinforced polymer has many advantage , such as lightweight , high strength , corrosion resistance , etc , and gradually widely used in civil engineering .Domestic and foreign study and practice results show that externally bonded FRP reinforced concrete structures with good mechanical properties .
A large number of experimental studies have shown that the durability of CFRP is good, environment has little effect on its mechanical properties .
Then after 1 year , it has declined dramatically The durability of saturating resin which is one of components of fiber reinforced polymer and adhesive material of FRP and concrete, affects the property of FRP reinforced structure.
The results showed that the influence on the durability of the resin caused by combination of each factor of outdoor exposure was more serious than that caused by single accelerated factor.
However, few of the existing works focuses on the mechanical properties of FRP reinforced concrete structure under corrosive environment.
A large number of experimental studies have shown that the durability of CFRP is good, environment has little effect on its mechanical properties .
Then after 1 year , it has declined dramatically The durability of saturating resin which is one of components of fiber reinforced polymer and adhesive material of FRP and concrete, affects the property of FRP reinforced structure.
The results showed that the influence on the durability of the resin caused by combination of each factor of outdoor exposure was more serious than that caused by single accelerated factor.
However, few of the existing works focuses on the mechanical properties of FRP reinforced concrete structure under corrosive environment.
Online since: April 2014
Authors: Feng Li, Ying Li, Xiao Ni Ma, Li Hua Zhang, Li Xue Zheng, Zhan Hua Yang, Qing Gao, Xiao Hua Liu, Ji Qin Han, Xin Xu
Among the process parameters, electrolyte provides a leading role owing to its vital influence not only on the films’ chemistry but also on the electrical conductivity of the circuit, which affects the film properties.
Introduction Titanium (Ti) and its alloys have been extensively used as dental or orthopedic implants because of their excellent mechanical properties and biocompatibility.
Research demonstrates that process parameters such as electric potential, applied frequency, treatment time and electrolyte have decisive effects on the properties of ASD films[5-7].
Dahotre, Calcium phosphate coatings for bio-implant applications: materials, performance factors, and methodologies, Mat.
Fecht, Synthesis and properties of hydroxyapatite-containing porous titania coating on ultrafine-grained titanium by micro-arc oxidation, Acta Biomater. 6 (2010) 2816-2825
Introduction Titanium (Ti) and its alloys have been extensively used as dental or orthopedic implants because of their excellent mechanical properties and biocompatibility.
Research demonstrates that process parameters such as electric potential, applied frequency, treatment time and electrolyte have decisive effects on the properties of ASD films[5-7].
Dahotre, Calcium phosphate coatings for bio-implant applications: materials, performance factors, and methodologies, Mat.
Fecht, Synthesis and properties of hydroxyapatite-containing porous titania coating on ultrafine-grained titanium by micro-arc oxidation, Acta Biomater. 6 (2010) 2816-2825
Online since: April 2004
Authors: Thongchai Fongsamootr, Charoenyut Dechwayukul, Notsanop Kamnerdtong, Carol A. Rubin, George T. Hahn
In previous studies, the stress concentration
factor for single row riveted lap joints was found to be approximately 6.1, and the stress
concentration factor for sealed riveted lap joints was approximately 5.2 for a 180 micron thick
sealant layer.
In this study, panel thickness, adhesive stiffness and adhesive layer thickness were varied parametrically in FEA analyses to determine their affects on the joints.
In previous studies, the stress concentration factor for single row riveted lap joints was found to be approximately 6.1, and the stress concentration factor for sealed riveted lap joints was approximately 5.2 for a 180 micron thick sealant layer [7].
The equations used for converting the stresses and strains in the solid elements to forces and displacements to define the spring element properties are presented below
Material properties of the panels and rivet are summarized in Table 1.
In this study, panel thickness, adhesive stiffness and adhesive layer thickness were varied parametrically in FEA analyses to determine their affects on the joints.
In previous studies, the stress concentration factor for single row riveted lap joints was found to be approximately 6.1, and the stress concentration factor for sealed riveted lap joints was approximately 5.2 for a 180 micron thick sealant layer [7].
The equations used for converting the stresses and strains in the solid elements to forces and displacements to define the spring element properties are presented below
Material properties of the panels and rivet are summarized in Table 1.
Online since: May 2006
Authors: Xing Dong Zhang, L. Zheng, J.M. Luo, Y.M. Jiang, T. Yuan
Material and
surface properties are known to have great impact on tissue-implant integration.
Materials and Methods Material, surface property, hole size and healing period during the two surgical stages, are factors that influence the biological activity of PD.
For the former, the integration of tissue and implant relies mostly on bioadhesive factors, which resulted in weak connections [4].
Material and the surface properties greatly influenced the integration of the tissue and implant.
It is the biological property of a material that affected the ingrowth of tissue through holes.
Materials and Methods Material, surface property, hole size and healing period during the two surgical stages, are factors that influence the biological activity of PD.
For the former, the integration of tissue and implant relies mostly on bioadhesive factors, which resulted in weak connections [4].
Material and the surface properties greatly influenced the integration of the tissue and implant.
It is the biological property of a material that affected the ingrowth of tissue through holes.
Online since: January 2015
Authors: Wei Yang, Qing Chen, Jian Hua Chen, Cong Han, Shu Guang Wang
Introduction
In addition to the physical properties of rock and the exposed area of surrounding rock, the main factors affecting the radon exhalation rate in tunnel include the weather conditions and ventilation styles.
Fig. 5 Relationship between natural ventilation quantity and radon exhalation rate 2) Correlation analysis of radon exhalation rate and temperature (1) Regression equation Based on the mechanism of radon exhalation, the key factor affecting the radon exhalation rate is the pressure difference between the inside and outside of the tunnel and the pressure difference is due to the temperature change.
A vortex will be formed when the air flows through the air door [9], seriously affecting the uniformity of radon distribution in tunnel.
Determination of radon reduction rate and exploration on its influence factors[J].
Estimating large-scale fractured rock properties from radon data collected in a ventilated tunnel[A].
Fig. 5 Relationship between natural ventilation quantity and radon exhalation rate 2) Correlation analysis of radon exhalation rate and temperature (1) Regression equation Based on the mechanism of radon exhalation, the key factor affecting the radon exhalation rate is the pressure difference between the inside and outside of the tunnel and the pressure difference is due to the temperature change.
A vortex will be formed when the air flows through the air door [9], seriously affecting the uniformity of radon distribution in tunnel.
Determination of radon reduction rate and exploration on its influence factors[J].
Estimating large-scale fractured rock properties from radon data collected in a ventilated tunnel[A].
Online since: June 2010
Authors: Aldo Roberto Boccaccini, Lutz Christian Gerhardt
Plenty of studies have shown that CNTs can favourably improve the mechanical
properties of bone TE composites [23, 25, 27, 28, 48].
Small percentages of MWCNTs (2 wt. %) improved significantly the mechanical properties of the PMMA bone cement.
The effects of material composition and porosity on the scaffold pore structure and mechanical properties were studied.
Wang et al. [30] investigated the mechanical properties of CNT-enhanced (0-2 wt. % F-MWCNTs) chitosan films.
The fabricated CNT-containing hoses showed both improved mechanical and antithrombotic surface properties.
Small percentages of MWCNTs (2 wt. %) improved significantly the mechanical properties of the PMMA bone cement.
The effects of material composition and porosity on the scaffold pore structure and mechanical properties were studied.
Wang et al. [30] investigated the mechanical properties of CNT-enhanced (0-2 wt. % F-MWCNTs) chitosan films.
The fabricated CNT-containing hoses showed both improved mechanical and antithrombotic surface properties.
Online since: October 2012
Authors: Wei Yan Shang, Wen Lin Min, Liu Yin Xiao, Cun Yue Cheng, Chun Lin Liu
Thus, the quality of precision stamping can be measured according to the usage condition and requirements, and then we can take appropriate measures to improve the quality of stamping according to the factors affecting the quality.
Affect of Gas to Quality of Section.
The deviation may be positive or negative, the determination factor is the blanking clearance.
Furthermore, The material properties, thickness, shape of workpiece will also affect on the dimensional accuracy.
Fig. 2 Blanking clearance size impact on the dimensional accuracy Fig. 3 Factors affect on dimensional accuracy Conclusion According to the above analysis, we know that the blanking clearance size between die and punch affects the quality of workpiece .And edge state, structure , material performance and manufacture accuracy of die always affect the quality of blanking.To get an optimal blanking process, we should study more about the affection of blanking clearance size to blanking process.
Affect of Gas to Quality of Section.
The deviation may be positive or negative, the determination factor is the blanking clearance.
Furthermore, The material properties, thickness, shape of workpiece will also affect on the dimensional accuracy.
Fig. 2 Blanking clearance size impact on the dimensional accuracy Fig. 3 Factors affect on dimensional accuracy Conclusion According to the above analysis, we know that the blanking clearance size between die and punch affects the quality of workpiece .And edge state, structure , material performance and manufacture accuracy of die always affect the quality of blanking.To get an optimal blanking process, we should study more about the affection of blanking clearance size to blanking process.
Online since: June 2018
Authors: Khushdeep Goyal, Deepak Kumar Goyal, Kuldeep Singh
Selection of factors
The selection of factors depends upon the response characteristics.
The numbers of factors with different levels are shown in Table 2.
In this experiment set up there are four factors with 3 levels.
Based on analysis of mean data, the input parameters pulse on time and pulse off time are significant factors that will affect the material removal rate.
Saghafian, "Evaluation of the mechanical properties of Niobium modified cast AISI H 13 hot work tool steel," Iranian Journal of Materials Science and Engineering, Vol. 7, No. 2, pp. 22-29, 2010
The numbers of factors with different levels are shown in Table 2.
In this experiment set up there are four factors with 3 levels.
Based on analysis of mean data, the input parameters pulse on time and pulse off time are significant factors that will affect the material removal rate.
Saghafian, "Evaluation of the mechanical properties of Niobium modified cast AISI H 13 hot work tool steel," Iranian Journal of Materials Science and Engineering, Vol. 7, No. 2, pp. 22-29, 2010
Online since: November 2022
Authors: Peter Apata Olubambi, Olusoji Oluremi Ayodele
a*Olusojia@uj.ac.za, bpolubambi@uj.ac.za
Keywords: Titanium alloy, Tensile properties, Wear, Microstructures, and Mechanical properties.
However, for Ti alloys to compete with nickel-based and superalloys, their mechanical properties must be enhanced by developing Ti-based composites.
Several factors can affect the microhardness of a sample.
Olubambi, Microstructures and mechanical properties of ceramics reinforced titanium matrix fabricated by pulsed electric current sintering, J.
Johnson, Effect of a high-temperature cycle on the mechanical properties of silicon carbide/titanium metal matrix composites, J.
However, for Ti alloys to compete with nickel-based and superalloys, their mechanical properties must be enhanced by developing Ti-based composites.
Several factors can affect the microhardness of a sample.
Olubambi, Microstructures and mechanical properties of ceramics reinforced titanium matrix fabricated by pulsed electric current sintering, J.
Johnson, Effect of a high-temperature cycle on the mechanical properties of silicon carbide/titanium metal matrix composites, J.