Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: May 2020
Authors: Luboš Bĕhálek, Petr Lenfeld, Irena Lenfeldová, Martin Boruvka
However, final properties of PLA composites reinforced with natural fibers are influenced by several factors, both in fiber as well as matrix terms.
From the point of view of a fiber, the degree of filling, fiber length, fiber morphology, fiber orientation and fiber distribution, all these factors have the effect.
Results and Discussion The mechanical properties are summarized in Table 3.
Experimental results of the mechanical properties of the biocomposite materials confirmed that mechanical properties are not only dependent on the type of fabric (woven, knitted, nonwoven), but also on the structure and fabric density.
Furthermore, mechanical properties depend on the orientation of the hierarchical fabric in the biocomposite.
From the point of view of a fiber, the degree of filling, fiber length, fiber morphology, fiber orientation and fiber distribution, all these factors have the effect.
Results and Discussion The mechanical properties are summarized in Table 3.
Experimental results of the mechanical properties of the biocomposite materials confirmed that mechanical properties are not only dependent on the type of fabric (woven, knitted, nonwoven), but also on the structure and fabric density.
Furthermore, mechanical properties depend on the orientation of the hierarchical fabric in the biocomposite.
Online since: August 2018
Authors: Minch Quang Do, Hoc Thang Nguyen, Van Quang Le, Minh Duc Hoang, Vo Thi Ha Quyen Pham, Thu Ha Bui
The geopolymer can be synthesized in many different conditions depending on factors of temperature, pressure, and curing conditions.
Formation of RM-based geopolymer was affected by many factors, in which, the alkaline activators are the most important factor.
The red mud powder passed 90μm-mesh siever was tested engineering properties.
Engineering properties of the WGS-RM-based geopolymer materials.
Promentilla, Mechanical and Thermal Properties of Geopolymers from Mixtures of Coal Ash and Rice Hull Ash using Water Glass Solution as Activator, ASEAN Journal of Chemical Engineering 15 (2015) 57-65
Formation of RM-based geopolymer was affected by many factors, in which, the alkaline activators are the most important factor.
The red mud powder passed 90μm-mesh siever was tested engineering properties.
Engineering properties of the WGS-RM-based geopolymer materials.
Promentilla, Mechanical and Thermal Properties of Geopolymers from Mixtures of Coal Ash and Rice Hull Ash using Water Glass Solution as Activator, ASEAN Journal of Chemical Engineering 15 (2015) 57-65
Online since: July 2012
Authors: Bernd Kretzschmar, Andreas Janke, Liane Häussler, Konrad Schneider, Manfred Stamm, Xiu Hong Li
The results showed that the mechanical properties, in terms of Young¢s modulus, yield stress, and cold drawing stress, are affected by the level of crystallinity and by the crystalline forms present.
The mechanical properties were measured by a tensile testing machine (Z010, Fa.
Elastic Modulus (±0.5MPa) Yield stress (±0.5MPa) Elongation at break (±2%) PA6 matrix 6.9 30.1 186 PA6/Al2O3 1% 7.5 32.9 173 PA6/Al2O3 2% 8.8 35.8 177 PA6/Al2O3 5% 7.7 35.7 160 PA6/Al2O3 7.5% 6.8 35.9 126 PA6/Al2O3 10% 8.3 35.1 121 In order to study the factors which contribute to the reinforcement of mechanical properties, the structure and crystallization behavior were investigated.
The effect of orientation on mechanical properties has been studied by Li and coworkers [12].
Study on mechanical properties shows the mechanical reinforcement effect of loading ZnO nanoparticles is better than loading Al2O3 nanoparticles.
The mechanical properties were measured by a tensile testing machine (Z010, Fa.
Elastic Modulus (±0.5MPa) Yield stress (±0.5MPa) Elongation at break (±2%) PA6 matrix 6.9 30.1 186 PA6/Al2O3 1% 7.5 32.9 173 PA6/Al2O3 2% 8.8 35.8 177 PA6/Al2O3 5% 7.7 35.7 160 PA6/Al2O3 7.5% 6.8 35.9 126 PA6/Al2O3 10% 8.3 35.1 121 In order to study the factors which contribute to the reinforcement of mechanical properties, the structure and crystallization behavior were investigated.
The effect of orientation on mechanical properties has been studied by Li and coworkers [12].
Study on mechanical properties shows the mechanical reinforcement effect of loading ZnO nanoparticles is better than loading Al2O3 nanoparticles.
Online since: October 2013
Authors: J.W. Bridge, C.A. Mahaffey, M.L. Peterson
The mechanical properties of these surfaces are significantly influenced by material composition, environmental factors, and surface maintenance procedures, and are susceptible to both environmental and mechanical-induced degradation over time.
Using a combination of material analytical tests, surface mechanical and chemical properties and changes to them are assessed.
Factors influencing this may include wear from racing and training traffic and maintenance equipment, as well as environmental factors such as UV radiation.
Both physical features (i.e. length and texture) and the surface chemistry of the fiber can affect the mechanical performance of the track material.
McIlwraith, “Effect of Track Maintenance on Mechanical Properties of a Dirt Racetrack: A Preliminary Study”, Equine Vet.
Using a combination of material analytical tests, surface mechanical and chemical properties and changes to them are assessed.
Factors influencing this may include wear from racing and training traffic and maintenance equipment, as well as environmental factors such as UV radiation.
Both physical features (i.e. length and texture) and the surface chemistry of the fiber can affect the mechanical performance of the track material.
McIlwraith, “Effect of Track Maintenance on Mechanical Properties of a Dirt Racetrack: A Preliminary Study”, Equine Vet.
Online since: March 2016
Authors: Hiroshi Yamagata, Ze Hao Chen, Cong Xu, Xiao Liang Hu, Zhi Guo Liu, Chao Li Ma
Results and Discussion
Mechanical Properties.
The fundamental purpose of the observation to the organization under optical microscope is to calculate the area of the eutectic Si and then contrast to the content of Fe element and the observation of the casting defects which can determine the influence factors of the mechanical properties and castability of the material.
Effect of the Iron-rich Intermetallic on the Mechanical Properties The iron makes great effect on the mechanical properties of the alloys.
Conclusions (1)The distribution of eutectic Si can affect the mechanical properties and castability of Al-Si-Mg alloy.
Microstructure and mechanical properties of AlSi (Mg) casting alloys.
The fundamental purpose of the observation to the organization under optical microscope is to calculate the area of the eutectic Si and then contrast to the content of Fe element and the observation of the casting defects which can determine the influence factors of the mechanical properties and castability of the material.
Effect of the Iron-rich Intermetallic on the Mechanical Properties The iron makes great effect on the mechanical properties of the alloys.
Conclusions (1)The distribution of eutectic Si can affect the mechanical properties and castability of Al-Si-Mg alloy.
Microstructure and mechanical properties of AlSi (Mg) casting alloys.
Online since: November 2006
Authors: C.P. Bergmann, S.R. Bragança
Effect of quartz of fine particle size on porcelain properties
S.R.
Bergmann Federal University of Rio Grande do Sul LACER/UFRGS Keywords: porcelain, strength, thermal strength Abstract The mechanical properties of porcelain are strongly influenced by the generated thermal stress during processing.
Introduction The final technical properties of triaxial ceramics is a consequence of a series of factors, such as the choice and preparation of raw materials, forming conditions, drying conditions, and firing schedule, including peak temperature.
These factors determine the complexity of the microstructure, and also the development of phases during sintering.
Wachtman, Mechanical Properties of Ceramics, John Wiley & Sons (1996)
Bergmann Federal University of Rio Grande do Sul LACER/UFRGS Keywords: porcelain, strength, thermal strength Abstract The mechanical properties of porcelain are strongly influenced by the generated thermal stress during processing.
Introduction The final technical properties of triaxial ceramics is a consequence of a series of factors, such as the choice and preparation of raw materials, forming conditions, drying conditions, and firing schedule, including peak temperature.
These factors determine the complexity of the microstructure, and also the development of phases during sintering.
Wachtman, Mechanical Properties of Ceramics, John Wiley & Sons (1996)
Online since: August 2016
Authors: Maria do Carmo de Andrade Nono, Sergio Luiz Mineiro, Pedro José Castro, E.G.L. Rangel
The ceramics sintered at 1200 °C were characterized as for density, crystalline phases, microstructure and microwave dielectric properties.
The performance of a DR is assessed by characterization of its microwave dielectric properties: dielectric constant, quality factor and temperature coefficient of resonant frequency.
Other factors such as grain size, polarization and conductivity of microstructures can also affect the properties, although with less intensity; we can consider that microwave dielectric properties are affected more by the crystalline structure and chemical compounds present in each one of the investigated ceramics.
Microwave dielectric properties of the investigated ceramics.
Rangel: A study of microwave dielectric properties of ZnO-Nb2O5-TiO2 ceramic system for applications in space communications.
The performance of a DR is assessed by characterization of its microwave dielectric properties: dielectric constant, quality factor and temperature coefficient of resonant frequency.
Other factors such as grain size, polarization and conductivity of microstructures can also affect the properties, although with less intensity; we can consider that microwave dielectric properties are affected more by the crystalline structure and chemical compounds present in each one of the investigated ceramics.
Microwave dielectric properties of the investigated ceramics.
Rangel: A study of microwave dielectric properties of ZnO-Nb2O5-TiO2 ceramic system for applications in space communications.
Molecular Interactions in PA6, LCP and their Blend Incorporated with Functionalized Carbon Nanotubes
Online since: September 2010
Authors: Jian Hong Zhao, Henry Kuo Feng Cheng, Nanda Gopal Sahoo, Lin Li, Siew Hwa Chan
The dispersion of MWCNT-COOH in the
polymer matrices and their interfacial interactions with polymer molecules were found to be the
most important factors affecting the properties of composites.
Moreover, studies on morphological, rheological, and mechanical properties confirmed that a better miscibility between PA6 and LCP had been constituted in the presence of MWCNT-COOH.
LCP microfibrils appeared which indicated a better miscibility and strong interfacial adhesion between PA6 and LCP, in the existence of MWCNT-COOH, which contributes to superior mechanical properties.
The tensile mechanical properties for the different sample are listed in Table 2.
The homogenous dispersion of functionalized MWCNTs in the polymer matrix and the strong interfacial bonding among PA6, LCP and MWCNT-COOH might be the key factors for the improvements in the properties of the composites.
Moreover, studies on morphological, rheological, and mechanical properties confirmed that a better miscibility between PA6 and LCP had been constituted in the presence of MWCNT-COOH.
LCP microfibrils appeared which indicated a better miscibility and strong interfacial adhesion between PA6 and LCP, in the existence of MWCNT-COOH, which contributes to superior mechanical properties.
The tensile mechanical properties for the different sample are listed in Table 2.
The homogenous dispersion of functionalized MWCNTs in the polymer matrix and the strong interfacial bonding among PA6, LCP and MWCNT-COOH might be the key factors for the improvements in the properties of the composites.
Online since: April 2007
Authors: Yu Bai, Hong Jie Wang, Zhi Hao Jin, Guan Jun Qiao, Ji Qiang Gao, Wen Zhang
China
Keywords: porous ceramics; mechanical properties; fabricated process
Abstract.
In this paper, the mechanical properties of porous Si3N4/SiC composite prepared by different forming method (uniaxial pressing and gel-casting) were compared.
But up to now, the mechanical properties of this kind of material is low because of the high porosity, which will limit the application of them.
Mechanical properties.
The forming method was also an important factor to affect the flexural strength and porosity.
In this paper, the mechanical properties of porous Si3N4/SiC composite prepared by different forming method (uniaxial pressing and gel-casting) were compared.
But up to now, the mechanical properties of this kind of material is low because of the high porosity, which will limit the application of them.
Mechanical properties.
The forming method was also an important factor to affect the flexural strength and porosity.
Online since: July 2012
Authors: Xiu Li Wang, Jiang Zhu
The mechanical properties of the copolymers were affected greatly by the length of PPDO segment.
CA not only keeps some original properties of polysaccharide such as renewability, low density, acceptable mechanical properties, but also shows the relatively good solubility in some solvents and thermoplastic property.
However, the discontinuous degradation rate in human body is one of main factors that limit it's the wide application in medical fields.
The mechanical properties of the copolymer were also examined.
Mechanical Properties of CDA-g-PPDO by Tensile Testing Specimens from CDA-g-PPDOs sheets obtained at 100 °C were met with the uniaxial stretching to find a relationship between the copolymers and the mechanical properties.
CA not only keeps some original properties of polysaccharide such as renewability, low density, acceptable mechanical properties, but also shows the relatively good solubility in some solvents and thermoplastic property.
However, the discontinuous degradation rate in human body is one of main factors that limit it's the wide application in medical fields.
The mechanical properties of the copolymer were also examined.
Mechanical Properties of CDA-g-PPDO by Tensile Testing Specimens from CDA-g-PPDOs sheets obtained at 100 °C were met with the uniaxial stretching to find a relationship between the copolymers and the mechanical properties.