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Online since: August 2013
Authors: Gen Tian Zhao, Chao Feng, Liao Yang Wang
Material testing
According to the national standard "steel and steel products mechanical properties test sampling location and sample preparation” (GB/T2795-1998) and "metal tensile test sample” (GB 6397-88) with the relevant provisions, the thickness of each plate make a group, a total of three groups, each group have three parts.
Mechanical properties of steel Material Yield strength/MPa Ultimate strength/MPa Elastic modulus /MPa Ultimate strength and yield strength ratio Transverse link 291 445 -- 1.53 8mm thick steel plate 289 431 1.67×105 1.49 10mm thick steel plate 280 398 1.68×105 1.42 12mm thick steel plate 274 389 1.68×105 1.42 Table2.
The results show that the thickness of end plate and backing plate are major factors affecting stiffness degradation.
Mechanical properties of steel Material Yield strength/MPa Ultimate strength/MPa Elastic modulus /MPa Ultimate strength and yield strength ratio Transverse link 291 445 -- 1.53 8mm thick steel plate 289 431 1.67×105 1.49 10mm thick steel plate 280 398 1.68×105 1.42 12mm thick steel plate 274 389 1.68×105 1.42 Table2.
The results show that the thickness of end plate and backing plate are major factors affecting stiffness degradation.
Online since: January 2015
Authors: Xue Mei Chen, Yan Chen, Jing Wen Zhou, Yu Can Fu, Qing Liang Chen
Experimental study on delamination during trimming of CFRP
Chen Qingliang1, Zhou Jingwen2, Chen Xuemei1, Chen Yan2,a, Fu Yucan2
1 Chengdu Aircraft Industrial (Group) Company Manufacturing Engineering, Chengdu, 610091, China;
2College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China, 210016
aninaych@nuaa.edu.cn
Key words: Carbon fiber reinforced plastics (CFRP), trimming, fiber direction, delamination.
Introduction The popularity of carbon fiber reinforced polymers (CFRP) in the aerospace industry has been increasing thanks to their desirable mechanical and physical properties [1].
Due to the anisotropic and inhomogeneous material properties of CFRP laminates, fiber (cutting) directions are usually the first thought during the machining of CFRP.
Factors affecting workpiece surface integrity in slotting of CFRP[J].
Introduction The popularity of carbon fiber reinforced polymers (CFRP) in the aerospace industry has been increasing thanks to their desirable mechanical and physical properties [1].
Due to the anisotropic and inhomogeneous material properties of CFRP laminates, fiber (cutting) directions are usually the first thought during the machining of CFRP.
Factors affecting workpiece surface integrity in slotting of CFRP[J].
Online since: October 2015
Authors: Mustafa Kaan Baltacioğlu, Hüseyi̇n Turan Arat, Kadir Aydın, Mustafa Özcanli
Experimental set-up
Test engine and fuels properties
3.6 L, non-modified, commercial, four cylinders, four-stroke, naturally aspirated, water-cooled direct injection compression ignition engine is used in all test which is placed in Cukurova University Automotive Engineering Laboratories in TURKEY.
Fuel properties can be reachable author’s previous studies [8].
Especially middle and high engine speeds, this factor can be seen expressly.
Once again, gas fuels combustion properties affected the power development.
The amount of hydroxy gas and CNG ratio in the mixture is also affected by this role.
Fuel properties can be reachable author’s previous studies [8].
Especially middle and high engine speeds, this factor can be seen expressly.
Once again, gas fuels combustion properties affected the power development.
The amount of hydroxy gas and CNG ratio in the mixture is also affected by this role.
Experimental Research on the Characteristics of the Magnetic Compound Fluid by Grinding Solar Wafers
Online since: November 2014
Authors: Zhi Chun Chen, Wei Fan, Ya Li Zhou, Bo Wu
At the beginning of the 21st century, the scientists from all over the world began to conduct a preliminary study on Magnetic compound fluid grinding technology. [3]In this paper, the physical properties and grinding mechanism of MCF are analyzed to find out its material removal parameters in section 1.
Other detailed information and the proportion of the ingredients is listed in Table 1. [6]- [8] Table 1The process parameters table These tests are used to analyze how some factors affect the grinding quality.These factors are magnetic field strength–H, magnetic eccentricity-e, Spindle speed-R, grinding time-T and machining gap-h.
In the case of multi-levels and multi-factors, five factors and four levels orthogonal experiment method is adopted. 3.1 The effects of spindle speed Fig. 3 shows the relationship between spindle speed and processing effect.
Machining gap affects the grinding pressure directly.
Experimental study of various influence factors of the magnetic compound fluid (MCF) flow characteristics [J].
Other detailed information and the proportion of the ingredients is listed in Table 1. [6]- [8] Table 1The process parameters table These tests are used to analyze how some factors affect the grinding quality.These factors are magnetic field strength–H, magnetic eccentricity-e, Spindle speed-R, grinding time-T and machining gap-h.
In the case of multi-levels and multi-factors, five factors and four levels orthogonal experiment method is adopted. 3.1 The effects of spindle speed Fig. 3 shows the relationship between spindle speed and processing effect.
Machining gap affects the grinding pressure directly.
Experimental study of various influence factors of the magnetic compound fluid (MCF) flow characteristics [J].
Online since: August 2020
Authors: Kanitta Supawan, Rakdiaw Muangma
These presented that the viscoelastic properties of filled nitrile rubbers can be extended by the cyclic loading measurement. [2].
Regularly, the mechanical properties of soft materials, such as papers, were investigated using the tensile testing as elucidated by previous literature [5], while this presentation use the hardness measuring instead.
Brinell hardness is the measuring of hardness properties that used the spherical indenter to impressed onto the sample surface.
The other review examined that the mechanical hysteresis can be discovered in the optical components, for instance, the mirror can be mechanically deformed using its piezoelectric properties.
The majority advantage of this approach can be used for the investigating the mechanical properties of soft materials such as papers [5,6].
Regularly, the mechanical properties of soft materials, such as papers, were investigated using the tensile testing as elucidated by previous literature [5], while this presentation use the hardness measuring instead.
Brinell hardness is the measuring of hardness properties that used the spherical indenter to impressed onto the sample surface.
The other review examined that the mechanical hysteresis can be discovered in the optical components, for instance, the mirror can be mechanically deformed using its piezoelectric properties.
The majority advantage of this approach can be used for the investigating the mechanical properties of soft materials such as papers [5,6].
Online since: September 2022
Authors: Jaya Madhuri Mandava, Dadı Nokesh, Chokkara Mahesh, Kallepalli Mani Naga Kumar, Mohammed Abdul Rahim Ahmed, Nersu Lokesh, Tadavarthi Yuva Kiran Naga Venkata Sai Ganesh, P. Phani Prasanthi
Along with the plant-based fibers, thermoplastic starch can be used to enhance the mechanical properties of composite materials.
Fabrication and mechanical properties should be combined while promoting these natural fibers for any commercial applications.
Fibre area correction factors (FACF) for the extended rules-of-mixtures for natural fibre reinforced composites.
Experimental Investigation of the Physical and Mechanical Properties of Sisal Fiber-Reinforced Concrete.
Physical, thermal, morphological, and tensile properties of cornstarch-based films as affected by different plasticizers.
Fabrication and mechanical properties should be combined while promoting these natural fibers for any commercial applications.
Fibre area correction factors (FACF) for the extended rules-of-mixtures for natural fibre reinforced composites.
Experimental Investigation of the Physical and Mechanical Properties of Sisal Fiber-Reinforced Concrete.
Physical, thermal, morphological, and tensile properties of cornstarch-based films as affected by different plasticizers.
Online since: August 2015
Authors: Kullanith Chaemprasith, Jakapan Teeralertpanich, Parisara Saensuk, Chanchai Thongpin, Nontawat Kritape
The mechanical properties including tensile, flexural strength and impact toughness were improved.
Interfacial adhesion between matrix and fiber was also enhanced and hence the mechanical properties.
The effect of Nylon 6 content on morphology, mechanical properties and thermal stability were investigated.
Dubois, Tailoring polylactide (PLA) properties for automotive applications: Effect of addition of designed additives on main mechanical properties, Polymer Testing, 36 (2014), 1-9
Yang, Thermal and mechanical properties of chemical crosslinked polylactide (PLA), Polymer Testing, 27 (2008) 957-963
Interfacial adhesion between matrix and fiber was also enhanced and hence the mechanical properties.
The effect of Nylon 6 content on morphology, mechanical properties and thermal stability were investigated.
Dubois, Tailoring polylactide (PLA) properties for automotive applications: Effect of addition of designed additives on main mechanical properties, Polymer Testing, 36 (2014), 1-9
Yang, Thermal and mechanical properties of chemical crosslinked polylactide (PLA), Polymer Testing, 27 (2008) 957-963
Online since: May 2014
Authors: Viton Uthaisangsuk, Surasak Suranuntchai, Anchalee Manonukul, Jutamas Anantapong
The variation of this phase affected macro hardness of the investigated alloy.
NAB alloys have been widely used in various marine parts, sincethey exhibits excellent resistance to general corrosion, cavitation corrosion and erosion cavitation, ease of castingand distinguished mechanical properties[1,2].
Microstructure that provides a great combination of corrosion resistance and mechanical properties such as strength and toughness is requested.
Thermo-mechanical process is a favored manufacturing technique for producing alloy component with improved properties.
To obtain a specific microstructure of the NAB alloy from the process, better understandingof all relevant influencing factors is necessary.
NAB alloys have been widely used in various marine parts, sincethey exhibits excellent resistance to general corrosion, cavitation corrosion and erosion cavitation, ease of castingand distinguished mechanical properties[1,2].
Microstructure that provides a great combination of corrosion resistance and mechanical properties such as strength and toughness is requested.
Thermo-mechanical process is a favored manufacturing technique for producing alloy component with improved properties.
To obtain a specific microstructure of the NAB alloy from the process, better understandingof all relevant influencing factors is necessary.
Online since: August 2012
Authors: L.M. Wang, H.C. Lin, C.J. Tsai
Its mechanical properties can vary over a wide range depending on the processing conditions.
It should be noted that the mechanical properties of a Ti-6-4 alloy plate can be significantly improved by a suitable heat treatment [10], e.g.
The possible mechanism of the related phase formation and the mechanical properties are studied.
Table 1 Mechanical properties of Ti-6Al-4V weldment of related treatment.
Other factors such as the thermal conductivity of the base material should also play a significant role.
It should be noted that the mechanical properties of a Ti-6-4 alloy plate can be significantly improved by a suitable heat treatment [10], e.g.
The possible mechanism of the related phase formation and the mechanical properties are studied.
Table 1 Mechanical properties of Ti-6Al-4V weldment of related treatment.
Other factors such as the thermal conductivity of the base material should also play a significant role.
Online since: October 2010
Authors: Hai Ping Chen, An Wu, Wen Lei Sun
Based on
the selected turbulence model, and considering the natural flow of air as a viscous incompressible
steady flow, and the fan blades as the flexible body, simulated the flowing line graph of wind wheel
surface, and the overall mechanical performance data at any moment.
As the key component in the wind turbine generator, the blade's performance directly affects the running efficiency and stability of the generator.
[3] FRP material properties [4] Linear density Span-wise elastic modulus shear elastic modulus Poisson's ratio 1.95×103 kg/m 3 1.93×1010 Pa 2.8 8×1 0 10 Pa 0.15 Boundary conditions Boundary conditions at the inlet This article considered the blades as being in a dangerous state of operating conditions, namely high rotate speed in the high-speed wind field, and the wind speed is 25m/s, the rotate speed is 30rpm.
Definition: u1, air flow speed at the wake stream; v0, speed of natural flow; a, inducing factor in the axis direction.
Fig. 5 the stress diagram for the blades Fig. 6 the strain diagram for the blades As shown in the Figure 7 and Figure 8, the force and torque in the root is so big, and there is the periodic aerodynamic force from the complex and unsteady flow field around the experiential blades, therefore, all these factors lead the blades to be flutter, which would speed up the fatigue fracture for the blades.
As the key component in the wind turbine generator, the blade's performance directly affects the running efficiency and stability of the generator.
[3] FRP material properties [4] Linear density Span-wise elastic modulus shear elastic modulus Poisson's ratio 1.95×103 kg/m 3 1.93×1010 Pa 2.8 8×1 0 10 Pa 0.15 Boundary conditions Boundary conditions at the inlet This article considered the blades as being in a dangerous state of operating conditions, namely high rotate speed in the high-speed wind field, and the wind speed is 25m/s, the rotate speed is 30rpm.
Definition: u1, air flow speed at the wake stream; v0, speed of natural flow; a, inducing factor in the axis direction.
Fig. 5 the stress diagram for the blades Fig. 6 the strain diagram for the blades As shown in the Figure 7 and Figure 8, the force and torque in the root is so big, and there is the periodic aerodynamic force from the complex and unsteady flow field around the experiential blades, therefore, all these factors lead the blades to be flutter, which would speed up the fatigue fracture for the blades.