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Online since: August 2011
Authors: Ye Liu, Shu Yan Qi, Zheng Ying Shi
All of these factors urgently requested us to research and develop the new type buffer packaging materials which can be degraded, recycled and reused.
Table 1 Soaking in NaOH solution at different time affect the fiber diameter and density of material Index Processing time 0.5[h] 1[h] 2[h] 4[h] 6[h] Product density [g.cm-3] 0.1025 0.0971 0.0915 0.0887 0.0862 Cell diameter [mm] 0.0915 0.8769 0.8535 0.8975 0.9373 Analysis of material properties .
Analysed the impact of each component of the foam, the foam rate, density, diameter and mechanical properties of the cell, obtained more appropriate conditions combined bamboo foam.
Effect of Surface Treatment of Plant Fiber on Mechanical Properties of Fiber Composite, J.
Structure and properties of starch-based foams prepared by microwave heating from extruded pellets, J.
Table 1 Soaking in NaOH solution at different time affect the fiber diameter and density of material Index Processing time 0.5[h] 1[h] 2[h] 4[h] 6[h] Product density [g.cm-3] 0.1025 0.0971 0.0915 0.0887 0.0862 Cell diameter [mm] 0.0915 0.8769 0.8535 0.8975 0.9373 Analysis of material properties .
Analysed the impact of each component of the foam, the foam rate, density, diameter and mechanical properties of the cell, obtained more appropriate conditions combined bamboo foam.
Effect of Surface Treatment of Plant Fiber on Mechanical Properties of Fiber Composite, J.
Structure and properties of starch-based foams prepared by microwave heating from extruded pellets, J.
Online since: July 2015
Authors: Rizalman Mamat, Mohd Rozi Mohd Perang, Wan Khairuddin Wan Ali, Amir Bin Aziz
Although the CTPB binder has good mechanical properties, it has problems with aging characteristics [21].
However, HTPB is able to demonstrate good mechanical properties at low temperatures and good aging characteristics [21].
As a result, the propellants produced have poor mechanical properties.
TA of HTPB Mixtures with Some of The Energetic Materials-Determination of Effective Factors.
Solid Propellant Processing Factors in Rocket Motor Design.
However, HTPB is able to demonstrate good mechanical properties at low temperatures and good aging characteristics [21].
As a result, the propellants produced have poor mechanical properties.
TA of HTPB Mixtures with Some of The Energetic Materials-Determination of Effective Factors.
Solid Propellant Processing Factors in Rocket Motor Design.
Online since: March 2007
Authors: Julian Y.H. Chia, Kais Hbaieb, Q.X. Wang
A full 3D finite element method has been used to understand how nano-clay particles affect
the mechanical properties of an epoxy/clay nanocomposite.
Introduction Analytical and numerical models are useful tools to study the factors controlling the mechanical properties of clay nanocomposites.
For example, the analysis of Fornes & Paul [1], Wang & Pyrz [2] and Sheng et al [3] showed that the key factors enhancing the stiffness of clay nanocomposite are the clay particle's high modulus, high aspect ratio and volume fraction.
The ability to model gallery failure is to consider the gallery failure mechanism reported by Wang et al [4] and understand its effects on the mechanical properties of the epoxy/clay nanocomposite.
No gallery damage has been observed in the RVE models; hence it is believed that gallery failure is an unlikely factor to cause the observed loss in the ultimate tensile strength of the epoxy/clay nanocomposite of [4].
Introduction Analytical and numerical models are useful tools to study the factors controlling the mechanical properties of clay nanocomposites.
For example, the analysis of Fornes & Paul [1], Wang & Pyrz [2] and Sheng et al [3] showed that the key factors enhancing the stiffness of clay nanocomposite are the clay particle's high modulus, high aspect ratio and volume fraction.
The ability to model gallery failure is to consider the gallery failure mechanism reported by Wang et al [4] and understand its effects on the mechanical properties of the epoxy/clay nanocomposite.
No gallery damage has been observed in the RVE models; hence it is believed that gallery failure is an unlikely factor to cause the observed loss in the ultimate tensile strength of the epoxy/clay nanocomposite of [4].
Online since: August 2013
Authors: Xun Wang, Cheng Si Yang, Xiao Wen Zhang
The startup performance and influence factors of closed-loop PHP had been studied by Wang [2].
The existing qualitative and quantitative studies have indicated that the performance of PHP is expected to be susceptible to many factors.
Although the investigations of single affecting factor develop rapidly, a comprehensive understanding is still lacking.
Research methods that synthesize various affecting factors seem to be promising.
The physical properties of working fluid include liquid density ρl, vapor density ρv, surface tension σ, thermal diffusion a, kinematic viscosity υ, specific heat capacity Cp and latent heat of vaporization hfg.
The existing qualitative and quantitative studies have indicated that the performance of PHP is expected to be susceptible to many factors.
Although the investigations of single affecting factor develop rapidly, a comprehensive understanding is still lacking.
Research methods that synthesize various affecting factors seem to be promising.
The physical properties of working fluid include liquid density ρl, vapor density ρv, surface tension σ, thermal diffusion a, kinematic viscosity υ, specific heat capacity Cp and latent heat of vaporization hfg.
Online since: December 2011
Authors: Juan Xia Zhang, Zheng Zhao Liang, Ya Fang Zhang, Xian Zhang Guo
Introduction
Cracking significantly affects the behavior of reinforced concrete structures.
Here, the concrete is assumed to be numerically represented with many elements with the same size and the mechanical properties of these elements are assumed to conform to a given Weibull distribution, the finite element method is employed as the basic stress analysis tool to calculate the stress and displacement in elements and the Mohr-Coulomb criterion with tension cut-off is utilized as damage threshold.
The detailed descriptions about the Weibull distribution of material properties and constitutive law of the numerical simulation code have been given more in References [8-10].
Concrete is considered as the heterogeneous material and the constitutive model with residual strength after elastic damages and failed elements are treated with reduced properties.
The other materials mechanical properties for the concrete and reinforcement follow the design material properties used from the reference [11].
Here, the concrete is assumed to be numerically represented with many elements with the same size and the mechanical properties of these elements are assumed to conform to a given Weibull distribution, the finite element method is employed as the basic stress analysis tool to calculate the stress and displacement in elements and the Mohr-Coulomb criterion with tension cut-off is utilized as damage threshold.
The detailed descriptions about the Weibull distribution of material properties and constitutive law of the numerical simulation code have been given more in References [8-10].
Concrete is considered as the heterogeneous material and the constitutive model with residual strength after elastic damages and failed elements are treated with reduced properties.
The other materials mechanical properties for the concrete and reinforcement follow the design material properties used from the reference [11].
Online since: January 2015
Authors: Zhu Qing Zhang, Kang Lin Xing
Finally ,Diamond abrasive which is considered was the most suitable for chemical mechanical polishing(CMP) abrasive of SiC Crystal Substrate.
Based on the problem in the free abrasive chemical mechanical polishing, based on the consolidation of chemical mechanical polishing abrasive for 6H-SiC single chip for processing.
It is very important to choose suitable abrasive material in CMP because the property of abrasive materials can directly affect the efficiency of polishing.
In addition, thinking of other influence factors of CMP, suitable removal rate is obviously helpful to judge the influences from other experiments. 2.2 Contrast tests between fixed abrasive CMP and free abrasive CMP 1) Analysis of results of free abrasive CMP The single factor experiments were done by changing the diameter of abrasives.
Study on Fixed-abrasive Chemical-mechanical Polishing Technology of Wafer in Integrate Circuit Manufacturing[J].
Based on the problem in the free abrasive chemical mechanical polishing, based on the consolidation of chemical mechanical polishing abrasive for 6H-SiC single chip for processing.
It is very important to choose suitable abrasive material in CMP because the property of abrasive materials can directly affect the efficiency of polishing.
In addition, thinking of other influence factors of CMP, suitable removal rate is obviously helpful to judge the influences from other experiments. 2.2 Contrast tests between fixed abrasive CMP and free abrasive CMP 1) Analysis of results of free abrasive CMP The single factor experiments were done by changing the diameter of abrasives.
Study on Fixed-abrasive Chemical-mechanical Polishing Technology of Wafer in Integrate Circuit Manufacturing[J].
Online since: June 2008
Authors: Oleg Figovsky, Anatoliy T. Ponomarenko, Vitaliy G. Shevchenko
Each of these factors is displayed in material in different extent depending
on technological parameters of processing, and also properties and interaction of fillers in particular
conditions.
Each of these factors is displayed in material in different extent depending on technological parameters of processing, and also properties and interaction of fillers in particular conditions.
Each type and level of hierarchy affects fundamental properties of condensed media in its own way.
As an example, we now outline the sequence of steps in solving the problem of designing composites with magnetic, ferroelectric, etc. fillers: 1) Selection and a justification of methods of synthesis of materials in different structural states. 2) Investigation of physical properties of heterogeneous media at different structural levels and revealing of key parameters, which determine these properties. 3) Development of VAT model for the description of electrical and magnetic properties, both static and dynamic, of heterogeneous materials with ferroelectric and magnetic components. 4) Theoretical and experimental investigation of the effect of external magnetic, electrical and mechanical fields on physical properties of heterogeneous media at different levels of structural hierarchy.
Examination of the dependence of Curie temperature on morphology and performance of components for the purpose of controlling the shift of Curie temperature. 6) Development of materials with a broad complex of physical properties, for example, for the purpose of making composite materials with electrodynamic properties, controllable by: - Variations of structural parameters at different levels of structural hierarchy; - Action of electrical, magnetic, mechanical and thermal fields.
Each of these factors is displayed in material in different extent depending on technological parameters of processing, and also properties and interaction of fillers in particular conditions.
Each type and level of hierarchy affects fundamental properties of condensed media in its own way.
As an example, we now outline the sequence of steps in solving the problem of designing composites with magnetic, ferroelectric, etc. fillers: 1) Selection and a justification of methods of synthesis of materials in different structural states. 2) Investigation of physical properties of heterogeneous media at different structural levels and revealing of key parameters, which determine these properties. 3) Development of VAT model for the description of electrical and magnetic properties, both static and dynamic, of heterogeneous materials with ferroelectric and magnetic components. 4) Theoretical and experimental investigation of the effect of external magnetic, electrical and mechanical fields on physical properties of heterogeneous media at different levels of structural hierarchy.
Examination of the dependence of Curie temperature on morphology and performance of components for the purpose of controlling the shift of Curie temperature. 6) Development of materials with a broad complex of physical properties, for example, for the purpose of making composite materials with electrodynamic properties, controllable by: - Variations of structural parameters at different levels of structural hierarchy; - Action of electrical, magnetic, mechanical and thermal fields.
Online since: March 2014
Authors: Dušan Galusek, Monika Kašiarová, Dagmar Galusková, Peter Tatarko, Zuzana Vilčeková, Petra Gaalová
The decrease of the mechanical properties – hardness and reduced elastic modulus after corrosion in white wine was measured.
CSM is useful for the measurement of nanomechanical properties of non-homogenous materials, such as corroded teeth, in which the mechanical properties changes with the indentation depth.
Although the surface roughness is often used for the evaluation of tooth enamel corrosion at the later stage of corrosion, here even the decrease of the mechanical properties by factor four do not affect the surface roughness.
To obtain a relevant data on the values of mechanical properties, the natural surface of a tooth should be tested.
Weihs, Nanoindentation mapping on the mechanical properties of human molar tooth enamel, Arch.
CSM is useful for the measurement of nanomechanical properties of non-homogenous materials, such as corroded teeth, in which the mechanical properties changes with the indentation depth.
Although the surface roughness is often used for the evaluation of tooth enamel corrosion at the later stage of corrosion, here even the decrease of the mechanical properties by factor four do not affect the surface roughness.
To obtain a relevant data on the values of mechanical properties, the natural surface of a tooth should be tested.
Weihs, Nanoindentation mapping on the mechanical properties of human molar tooth enamel, Arch.
Online since: June 2025
Authors: Galih Taqwatomo, Muhammad Dikdik Gumelar, Siti Amalina Azahra, Damisih Damisih, Muhammad Kozin, I. Nyoman Jujur, Nandang Suhendra, Agustanhakri Agustanhakri, Aghni Ulma Saudi, Mirza Wibisono, Winda Rianti, Suryadi Suryadi, Iwan Setyadi, Bambang Tri Wibowo, Joni Sah
The chosen manufacturing method can significantly affect the material properties and economic value of the alloy.
The solution treatment temperature significantly influences the mechanical properties of the Ti-6Al-7Nb alloy.
This transformation has significant implications for the mechanical properties of the alloy [4].
This well-aligned microstructure contributes to the alloy's superior mechanical properties and corrosion resistance by improving its overall stability [22].
Gysler: Microstructure and Mechanical Properties of Titanium Alloys, Vol. 2 (World Scientific, 2000) https://doi.org/10.1142/4311
The solution treatment temperature significantly influences the mechanical properties of the Ti-6Al-7Nb alloy.
This transformation has significant implications for the mechanical properties of the alloy [4].
This well-aligned microstructure contributes to the alloy's superior mechanical properties and corrosion resistance by improving its overall stability [22].
Gysler: Microstructure and Mechanical Properties of Titanium Alloys, Vol. 2 (World Scientific, 2000) https://doi.org/10.1142/4311
Online since: October 2013
Authors: Hong Xia Wu, Yin Ping Chen
This paper puts forward a kind of mechanical measurement method—Heavy hammer-level meter detection based on investigation and research around the Hubei power plant.
The difficulties of ash level measurement Coal ash in the storage has some properties such as light weight, dry, small particle size and low dielectric constant, etc. [5].
These properties result in level measurement of material difficulties are as follows: The dielectric constant of the ash is low, it leads to ultrasound and radar can not form strong reflection.
Coal ash is easily affected by temperature, rain and other external environmental impact [6], medium surface reflection intensity varies because of the environment, it will affect the accuracy of the instrument.
Heavy hammer-level meter is widely used because it is not affected by the dielectric constant, dust concentration, reflective surface and other factors [7].
The difficulties of ash level measurement Coal ash in the storage has some properties such as light weight, dry, small particle size and low dielectric constant, etc. [5].
These properties result in level measurement of material difficulties are as follows: The dielectric constant of the ash is low, it leads to ultrasound and radar can not form strong reflection.
Coal ash is easily affected by temperature, rain and other external environmental impact [6], medium surface reflection intensity varies because of the environment, it will affect the accuracy of the instrument.
Heavy hammer-level meter is widely used because it is not affected by the dielectric constant, dust concentration, reflective surface and other factors [7].