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Online since: December 2012
Authors: Xing Lin Qi, Jia Kai Liu, Jin Jia, Bo Fu
When the characteristic size diminishes from macro to micro level, the volume reducing factor is more than 106 times to the surface reducing factor.
From the above analysis, it is known that the MEMS fuze mechanism is quite different from the traditional fuze mechanism in the aspects of processing technology, material property, structure form and “micro size effect”, which are the basic factors leading to the reliability problems of MEMS mechanism with large difference from traditional mechanism.
Environment stress is the important factor inducing MEMS mechanism failure.
Surface corrosion may change the property of material surface such as roughness and surface force etc, which affect the function of MEMS fuze mechanism seriously.
Different from the steady performance of body structural material, the property of electroforming material may be affected by many factors such as temperature of electroforming liquid, pH value and current density etc.
From the above analysis, it is known that the MEMS fuze mechanism is quite different from the traditional fuze mechanism in the aspects of processing technology, material property, structure form and “micro size effect”, which are the basic factors leading to the reliability problems of MEMS mechanism with large difference from traditional mechanism.
Environment stress is the important factor inducing MEMS mechanism failure.
Surface corrosion may change the property of material surface such as roughness and surface force etc, which affect the function of MEMS fuze mechanism seriously.
Different from the steady performance of body structural material, the property of electroforming material may be affected by many factors such as temperature of electroforming liquid, pH value and current density etc.
Online since: January 2015
Authors: Amiruddin Ismail, Mohamad Rehan bin Karim, Mojtaba Shojaei Baghini
Polymers have a significant effect on the workability and mechanical properties of soil aggregate–cement mixture.
The goal of the present work was to assess the factors affecting the slong-term performance and strength of Cement–Rovene® 4045 treated base (CRTB) via laboratory tests.
The soil-aggregate properties were evaluated prior to the design of the mixture, and those physical and mechanical properties.
One of the significant factors to maximizing the pavement life is investigate pavements affects with sufficient resistance to damage under environmental conditions.
Physical and mechanical properties of styrene–butadiene rubber emulsion modified cement mortars.
The goal of the present work was to assess the factors affecting the slong-term performance and strength of Cement–Rovene® 4045 treated base (CRTB) via laboratory tests.
The soil-aggregate properties were evaluated prior to the design of the mixture, and those physical and mechanical properties.
One of the significant factors to maximizing the pavement life is investigate pavements affects with sufficient resistance to damage under environmental conditions.
Physical and mechanical properties of styrene–butadiene rubber emulsion modified cement mortars.
Online since: April 2015
Authors: Tadjuddin Muhammad, Khalil Fazmi, Husaini Husaini, Zahrul Fuadi
Among the parts affected by the fuel switch are fuel pumps components, including the fuel injection needle.
The material pair is chosen because of their widely used as mechanical components.
The addition of biodiesel, such as palm methyl ester could affect the friction and wear performance of the mechanical components that may influence the precision of the fuel injected into the combustion chamber.
Several researchers have discussed the influences of physical properties of biodiesel on the injection process of diesel engines.
Effect of mechanical factors on tribological properties of palm oil methylester blended lubricant, Wear 239 2000. 117–125
The material pair is chosen because of their widely used as mechanical components.
The addition of biodiesel, such as palm methyl ester could affect the friction and wear performance of the mechanical components that may influence the precision of the fuel injected into the combustion chamber.
Several researchers have discussed the influences of physical properties of biodiesel on the injection process of diesel engines.
Effect of mechanical factors on tribological properties of palm oil methylester blended lubricant, Wear 239 2000. 117–125
Online since: September 2013
Authors: Toshifumi Kakiuchi, Kyohei Kushihata, Mitsuhiro Kiyohara, Yukio Miyashita
Chemical composition and mechanical properties of the material used are shown in Table 1 and 2.
Table 2 Mechanical properties of exturede AZ61 used.
A Fig.8 Relationship between stress intensity factor range and crack growth rate.
Longer fatigue life observed in PL material might be due to the difference in the fatigue crack growth resistance affected by the processing layer.
Hosokai, Effect of Texture on Fatigue Properties of an Extruded AZ61 Magnesium Alloy Plate, Key Engineering Materials, 274-276(2004) pp.193-198.
Table 2 Mechanical properties of exturede AZ61 used.
A Fig.8 Relationship between stress intensity factor range and crack growth rate.
Longer fatigue life observed in PL material might be due to the difference in the fatigue crack growth resistance affected by the processing layer.
Hosokai, Effect of Texture on Fatigue Properties of an Extruded AZ61 Magnesium Alloy Plate, Key Engineering Materials, 274-276(2004) pp.193-198.
Online since: December 2023
Authors: Vinod B. Suryawanshi, Nehal Muchhala, Shruti Desai, Raju Tayade
Among these process parameters, melt temperature and spreading are the critical parameters affecting the properties of the filament.
Fiber volume ratio plays an important role on mechanical properties of composites.
Modeling of Effect of Spreading on Mechanical Properties of the Filament.
Effect of Fiber Spreading on Mechanical Properties of Filament.
It is observed that fiber spreading improves the mechanical properties of filament.
Fiber volume ratio plays an important role on mechanical properties of composites.
Modeling of Effect of Spreading on Mechanical Properties of the Filament.
Effect of Fiber Spreading on Mechanical Properties of Filament.
It is observed that fiber spreading improves the mechanical properties of filament.
Online since: May 2015
Authors: B. Serier, H. Salah, Bel Abbès Bachir Bouiadjra, Mohamed Mokhtar Bouziane, Smail Benbarek
One of the most important factors in the reinforce design is to reduce the stress on the bone cement and the femur.
The material properties adopted were specified in terms of Young’s modulus and Poisson’s ratio for the implants and all associated components (Table 1).
Table 1: Material properties used for the finite elements models.
Mechanical properties of bone cement are of importance keys for a successful surgery and further use of the joint as well as its behaviour during complex load which appears during patient's activity.
In addition, the mechanical properties of cement-bone and cement-metal interfaces are affected by the non-homogeneous distributions.
The material properties adopted were specified in terms of Young’s modulus and Poisson’s ratio for the implants and all associated components (Table 1).
Table 1: Material properties used for the finite elements models.
Mechanical properties of bone cement are of importance keys for a successful surgery and further use of the joint as well as its behaviour during complex load which appears during patient's activity.
In addition, the mechanical properties of cement-bone and cement-metal interfaces are affected by the non-homogeneous distributions.
Online since: August 2018
Authors: Zhong Zhou Yi, Feng Rui Zhai, Lei Gao, Ke Shan, Nan Li
Laser forming technique is based on the temperature gradient mechanism (TGM) and temperature distribution is the main factor that affects the laser forming process.
The temperature distribution can be influenced by several parameters, such as laser spot diameter, laser power and laser scan-speed, which ultimately affect the shape and mechanical properties of the workpieces [13, 14].
The thermophysical properties of SiC is listed in table 1 and thermophysical properties of TC4, as shown in Fig.3, varies with temperature.
The thermophysical properties of SiC [11, 15].
Li, Effect of electron beam welding on the microstructures and mechanical properties of thick TC4-DT alloy, Materials & Design, 34 (2012) 509-515
The temperature distribution can be influenced by several parameters, such as laser spot diameter, laser power and laser scan-speed, which ultimately affect the shape and mechanical properties of the workpieces [13, 14].
The thermophysical properties of SiC is listed in table 1 and thermophysical properties of TC4, as shown in Fig.3, varies with temperature.
The thermophysical properties of SiC [11, 15].
Li, Effect of electron beam welding on the microstructures and mechanical properties of thick TC4-DT alloy, Materials & Design, 34 (2012) 509-515
Online since: September 2013
Authors: Li Jing, Chen Chao
Comprehensive evaluation is a method to make overall evaluation of an object influenced by multi-factors.
In order to avoid the subjective factors influencing authenticity [4], we will quantify the target and each indicator.
Therefore we should focus on considering the thick, cut degeneration, drapability, bending, tensile properties and other properties of fabric.
Establish evaluation index set The physical and mechanical properties of fabric impact fabrics drape and elegant feeling performance in the bending properties, shear properties, tensile properties, drape, weight, thickness aspects(Specific performance in table 1).
Table 1 The mechanical properties result table No.
In order to avoid the subjective factors influencing authenticity [4], we will quantify the target and each indicator.
Therefore we should focus on considering the thick, cut degeneration, drapability, bending, tensile properties and other properties of fabric.
Establish evaluation index set The physical and mechanical properties of fabric impact fabrics drape and elegant feeling performance in the bending properties, shear properties, tensile properties, drape, weight, thickness aspects(Specific performance in table 1).
Table 1 The mechanical properties result table No.
Online since: August 2005
Authors: A. Witvrouw, A. Mehta
High-quality films
with excellent electrical and mechanical properties can be obtained at low temperature (#450ºC)
and high deposition rates (~100 nm/min).
Table 1: Comparison of mechanical properties and melting points of Si, Ge [19] and Al.
Other Material Properties.
The layer should also keep its good electrical and mechanical properties over the lifetime of the device.
In addition, a new generation of circuitry can easily replace the older one without affecting the MEMS on top of it.
Table 1: Comparison of mechanical properties and melting points of Si, Ge [19] and Al.
Other Material Properties.
The layer should also keep its good electrical and mechanical properties over the lifetime of the device.
In addition, a new generation of circuitry can easily replace the older one without affecting the MEMS on top of it.
Online since: April 2010
Authors: Simon C. Hopkins, Bartek A. Glowacki, Ludovic Thilly, Marco Di Michiel, Ian Pong, Christian Scheuerlein, Carmine Senatore, Alexandre Gerardin, Luc-Rene Oberli, Guillaume Geandier, Luca Bottura
Modular superconducting magnets such as those used in the LHC require connection,
and the joint has to be soldered at temperatures above the melting point of solder without its
properties, in particular current delivery capacity, severely affected.
Nanostructure changes before reactive diffusion are deduced from superconducting properties measurement whereas microstructure and structural changes are detected by microscopy and mechanical testing.
The same batch of samples was used also for superconducting properties measurements, mechanical tests, and metallography.
Superconducting Properties Measurements.
This may be due to the presence of residual stresses or other non-equilibrium factors.
Nanostructure changes before reactive diffusion are deduced from superconducting properties measurement whereas microstructure and structural changes are detected by microscopy and mechanical testing.
The same batch of samples was used also for superconducting properties measurements, mechanical tests, and metallography.
Superconducting Properties Measurements.
This may be due to the presence of residual stresses or other non-equilibrium factors.