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Online since: July 2013
Authors: Xiao Lei Zhang, Li Qun Du, Ao An Wang
These problems seriously affect the product yield and stability of microdevice.
Besides, during pull-off test, other factors such as the misalignment of loading, the differences of samples sizes, the change of internal stress distribution because of adhesive solidification made the experimental data discrete and inaccurate, which add to the cost and difficulty of this test [10].
In pull-off test, mixed debond and other factors made the experimental data discrete and inaccurate.
Al-Turaif, Effect of nano TiO2 particle size on mechanical properties of cured epoxy resin, Prog.
Liu, Investigation of adhesion properties between SU-8 photoresist and stainless steel substrate, Micro Nano Lett. 6 (2011) 397-401
Besides, during pull-off test, other factors such as the misalignment of loading, the differences of samples sizes, the change of internal stress distribution because of adhesive solidification made the experimental data discrete and inaccurate, which add to the cost and difficulty of this test [10].
In pull-off test, mixed debond and other factors made the experimental data discrete and inaccurate.
Al-Turaif, Effect of nano TiO2 particle size on mechanical properties of cured epoxy resin, Prog.
Liu, Investigation of adhesion properties between SU-8 photoresist and stainless steel substrate, Micro Nano Lett. 6 (2011) 397-401
Online since: May 2020
Authors: K. Smirnov, V.Yu. Chukhlanov, Elena E. Mastalygina
Thermophysical properties of the developed syntactic foams were analyzed in this work.
The choice of a binder largely determines the physical-mechanical and thermophysical properties of syntactic foams.
In previously published works [13-16], the physical-mechanical properties of syntactic foams based on organosilicon binders and hollow glass microspheres were considered.
Meador, Carbon nanotube epoxy nano-composites: the effects of interfacial modifications on dynamic mechanical properties of the nanocomposite, ACS Appl.
Bai, Mechanical and electrical properties of a MWNT/epoxy composite, Compos.
The choice of a binder largely determines the physical-mechanical and thermophysical properties of syntactic foams.
In previously published works [13-16], the physical-mechanical properties of syntactic foams based on organosilicon binders and hollow glass microspheres were considered.
Meador, Carbon nanotube epoxy nano-composites: the effects of interfacial modifications on dynamic mechanical properties of the nanocomposite, ACS Appl.
Bai, Mechanical and electrical properties of a MWNT/epoxy composite, Compos.
Online since: July 2021
Authors: Husaini Husaini, Nurdin Ali, Abdillah Sofian, Nuzan Rizki Muhammad
Therefore an in-depth study of the mechanical properties of the two types of spoke wheel rims and cast wheel rims made of aluminum is needed.
Factors causing rim failure.
The biggest factor affecting this damage is the presence of overload and high vehicle speed when passing through a damaged road (hollow) resulting in an impact that results in the rim deformation.
The presence of alloying elements such as Silicon (Si), Magnesium (Mg) in aluminum alloys can improve the physical and mechanical properties of the aluminum material.
The presence of alloying elements such as Silicon (Si), Magnesium (Mg), copper (Cu) in aluminum alloys can improve the physical and mechanical properties of the aluminum material.
Factors causing rim failure.
The biggest factor affecting this damage is the presence of overload and high vehicle speed when passing through a damaged road (hollow) resulting in an impact that results in the rim deformation.
The presence of alloying elements such as Silicon (Si), Magnesium (Mg) in aluminum alloys can improve the physical and mechanical properties of the aluminum material.
The presence of alloying elements such as Silicon (Si), Magnesium (Mg), copper (Cu) in aluminum alloys can improve the physical and mechanical properties of the aluminum material.
Online since: August 2014
Authors: Dong Ming Yu, Jia Wei Jin, Xian Zhen Ye, Xiao Fan Yang, Ju Dong Liu
Introduction
Carbon fiber reinforced plastics (CFRP) are widely used in aerospace, sports, health care and other areas, owing to it having excellent properties such as light weight, high specific strength, high specific modulus, good wear-resistance, etc.
Their material properties are listed in table 1.
Table 3 could conclude that the four factors affecting flank wear in a descending order as: spindle speed, cutting width, feed rate, and interaction.
Table 5 could conclude that the four factors affecting flank wear in a descending order as: interaction, feed rate, spindle speed, cutting width.
The four factors affecting flank wear in a descending order as: interaction, feed rate, spindle speed, cutting width.
Their material properties are listed in table 1.
Table 3 could conclude that the four factors affecting flank wear in a descending order as: spindle speed, cutting width, feed rate, and interaction.
Table 5 could conclude that the four factors affecting flank wear in a descending order as: interaction, feed rate, spindle speed, cutting width.
The four factors affecting flank wear in a descending order as: interaction, feed rate, spindle speed, cutting width.
Online since: December 2011
Authors: Wang Yong, Han Tao, Wei Liu
But when the pipeline is welded, the high temperature of welding arc will do harm to the bonding strength of the enamel coating and the base metal because of the differences of thermo-physical properties between them.
When the pipeline with enamel coatings is welded, the high temperature of welding arc will do harm to the bonding strength of the enamel coating and the base metal because of the differences of thermo-physical properties between them.
Thermal Simulation Test The heat affected zone can be divided into some subzones according to different welding thermal cycle, such as fusion zone, overheated zone, normalized zone and imperfect normalized zone [21], and there is much difference among them in properties.
The remelting enamel coating could flow influenced by some factors, but it was restricted by the unmelted coating, some area subsided and some area bulged, so cracks and other flaws could be produced easily superadded residual stress in the enamel coating (Fig.4d).
[21] Zhang Wenyue: Welding metallurgy (Mechanical industry publishing company, Beijing 1993)
When the pipeline with enamel coatings is welded, the high temperature of welding arc will do harm to the bonding strength of the enamel coating and the base metal because of the differences of thermo-physical properties between them.
Thermal Simulation Test The heat affected zone can be divided into some subzones according to different welding thermal cycle, such as fusion zone, overheated zone, normalized zone and imperfect normalized zone [21], and there is much difference among them in properties.
The remelting enamel coating could flow influenced by some factors, but it was restricted by the unmelted coating, some area subsided and some area bulged, so cracks and other flaws could be produced easily superadded residual stress in the enamel coating (Fig.4d).
[21] Zhang Wenyue: Welding metallurgy (Mechanical industry publishing company, Beijing 1993)
Online since: December 2011
Authors: Mei Fa Huang, Zhi Yue Wang, Wei Chuang Quan, Da Wei Zhang
The swing-arm is an important component of led die bonder and its dynamic characteristics will directly affect the piece accuracy.
The theoretical basis of modal analysis Modal analysis is widely used to describe the dynamic properties of a structure in terms of the modal parameters i.e. natural frequencies, damping factors, and vibration modes.
By substitute Eq. (2) into Eq. (1) and eliminate the factor , We can obtain characteristic equations of Eq. (1)
The accuracy will be affected.
Modern Mechanical Dynamics and Application (Mechanical Industry Press, Beijing 2002)
The theoretical basis of modal analysis Modal analysis is widely used to describe the dynamic properties of a structure in terms of the modal parameters i.e. natural frequencies, damping factors, and vibration modes.
By substitute Eq. (2) into Eq. (1) and eliminate the factor , We can obtain characteristic equations of Eq. (1)
The accuracy will be affected.
Modern Mechanical Dynamics and Application (Mechanical Industry Press, Beijing 2002)
Online since: January 2013
Authors: Ya Zhen Wang, Yong Li, Di Ma, Cheng E Yue, Wei Nan Jia
The degradation of PP is a key factor of affecting the working life.
The impact factors of its degradation are light, heat, oxidation, hydrolysis, high energy ray, etc.
Ultraviolet irradiation can cause chemical reaction of polymer, making polymer change in molecular structure and macroscopic properties.
Standard samples will be get by the injection mechanism, and then test its anti-aging properties through the QUV Accelerated Weathering Tester as well as its mechanical properties.
Test these standard samples’ anti-aging properties by QUV Accelerated Weathering Tester.
The impact factors of its degradation are light, heat, oxidation, hydrolysis, high energy ray, etc.
Ultraviolet irradiation can cause chemical reaction of polymer, making polymer change in molecular structure and macroscopic properties.
Standard samples will be get by the injection mechanism, and then test its anti-aging properties through the QUV Accelerated Weathering Tester as well as its mechanical properties.
Test these standard samples’ anti-aging properties by QUV Accelerated Weathering Tester.
Online since: April 2008
Authors: Xian Hua Liu, Roshun Paurobally, Jie Pan
There have been no other impedance influence factors such as loads or stress change studied.
The inline vibration frequency will not be affected by increased stretch due to linear elasticity and linear superposition property, while the transverse oscillation frequency will increase as the stretch force increases due to the nonlinear relationships between the stretch and vibration frequency.
The Impedance Method The impedance method uses PZT patches adhered to structure surfaces to excite and sense vibration by the property of that a PZT patch produces electrical charge when stressed mechanically and produces mechanical strain when an electrical field is applied.
Shear force added to right half of the beam by the PZT patch and resulting forces at the cross section The dynamic response will also depend on other system properties such as mass, stiffness and damping coefficient of the beam, however it is believed that the static properties (5-8) can still indicate what form of vibration of the beam will mainly be activated.
Rao: Mechanical Vibrations, 4 th edition, Pearson Prentice Hall (2004)
The inline vibration frequency will not be affected by increased stretch due to linear elasticity and linear superposition property, while the transverse oscillation frequency will increase as the stretch force increases due to the nonlinear relationships between the stretch and vibration frequency.
The Impedance Method The impedance method uses PZT patches adhered to structure surfaces to excite and sense vibration by the property of that a PZT patch produces electrical charge when stressed mechanically and produces mechanical strain when an electrical field is applied.
Shear force added to right half of the beam by the PZT patch and resulting forces at the cross section The dynamic response will also depend on other system properties such as mass, stiffness and damping coefficient of the beam, however it is believed that the static properties (5-8) can still indicate what form of vibration of the beam will mainly be activated.
Rao: Mechanical Vibrations, 4 th edition, Pearson Prentice Hall (2004)
Online since: July 2022
Authors: Marion Merklein, Dominic Bartels, Maximilian Kreß, Michael Schmidt
In this way, interactions between the influencing factors are identified.
Due to higher cooling rates and other interfering factors during AM, the mechanical properties of the edge areas may differ considerably from those of the central area of the patches.
Lastly, the differences in mechanical properties measured on the FF and BF are examined.
Various factors influencing the forming behavior and mechanical properties could be derived and a significant increase in yield strength by up to +69 % and tensile strength by up to +38 % could be demonstrated.
Q. et al.: Analysis of Influencing Factors and Experimental Study on Properties of Laser Cladding Layer.
Due to higher cooling rates and other interfering factors during AM, the mechanical properties of the edge areas may differ considerably from those of the central area of the patches.
Lastly, the differences in mechanical properties measured on the FF and BF are examined.
Various factors influencing the forming behavior and mechanical properties could be derived and a significant increase in yield strength by up to +69 % and tensile strength by up to +38 % could be demonstrated.
Q. et al.: Analysis of Influencing Factors and Experimental Study on Properties of Laser Cladding Layer.
Online since: January 2009
Authors: Ting Yu Hao, Gai Fei Peng, Bo Ming Zhao
DNSC subjected to high temperature lost its mechanical
properties in a similar manner to that of high-strength concrete.
Moisture content and densification of microstructure are the main two factors governing the occurrence of explosive spalling [2, 4, 5].
Spalling tests and determination of residual mechanical properties were conducted on concrete specimens.
It should be pointed out that the exact factor affecting spalling occurrence is dense microstructure rather than strength grade of concrete.
DNSC subjected to high temperature lost its mechanical properties in a similar manner to that of high-strength concrete.
Moisture content and densification of microstructure are the main two factors governing the occurrence of explosive spalling [2, 4, 5].
Spalling tests and determination of residual mechanical properties were conducted on concrete specimens.
It should be pointed out that the exact factor affecting spalling occurrence is dense microstructure rather than strength grade of concrete.
DNSC subjected to high temperature lost its mechanical properties in a similar manner to that of high-strength concrete.