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Online since: March 2012
Authors: Li Hong Cao
Using the PRO-E to build the 3D model of plastic closures and analyze the main shortages of the plastic closures and the corresponding countermeasures; the influencing factors like the polymer injection location, the pressure, the temperature and the time in the plastic closures molding process are studied in this paper based on Moldflow.
It is one of the common shortcomings of plastic products and it affects the plastic product’s appearance quality and the mechanical property.
The main factors influencing the buckling deformation are: (1) the buckling deformation is caused by the uneven cooling, i.e. the result of uneven contraction of the product along thickness direction.
The main factors include the uneven temperature in the cavity surface, the temperature change along the thickness direction and the thermal properties of the mold; (2) the buckling deformation is caused by the uneven contraction (also called the regional contraction), i.e. the result of uneven contraction of the whole plastic product.
The main factors include the molecular orientation, the glass fiber orientation, the polymer injection location, the cooling system design or the cooling parameters and the molding conditions.
It is one of the common shortcomings of plastic products and it affects the plastic product’s appearance quality and the mechanical property.
The main factors influencing the buckling deformation are: (1) the buckling deformation is caused by the uneven cooling, i.e. the result of uneven contraction of the product along thickness direction.
The main factors include the uneven temperature in the cavity surface, the temperature change along the thickness direction and the thermal properties of the mold; (2) the buckling deformation is caused by the uneven contraction (also called the regional contraction), i.e. the result of uneven contraction of the whole plastic product.
The main factors include the molecular orientation, the glass fiber orientation, the polymer injection location, the cooling system design or the cooling parameters and the molding conditions.
Online since: August 2014
Authors: Zulkifli Ahmad, Ismail Hanafi, Zuratul Ain Abdul Hamid, C.Y. Tham
The outcomes of the studies would able to identify the factors (which related to the material usage) that affecting the size of particles, which are crucial understanding in scale up processes.
As a result, the fabrication of nanoparticles did not affected by the PVAL concentration as compared to microparticles.
Prabha, Residual polyvinyl alcohol associated with poly( D,L-lactide-co-glycolide) nanoparticles affects their physical properties and cellular uptake, J.
Hurme, Effect of preparation conditions on the properties of microspheres prepared using an emulsion-solvent extraction process, Chem.
Kobayashi, Influence of the degrees of hydrolyzation and polymerization of polyvinyl alcohol) on the preparation and properties of poly(DL-lactide-co-glycolide) nanoparticles, Int.
As a result, the fabrication of nanoparticles did not affected by the PVAL concentration as compared to microparticles.
Prabha, Residual polyvinyl alcohol associated with poly( D,L-lactide-co-glycolide) nanoparticles affects their physical properties and cellular uptake, J.
Hurme, Effect of preparation conditions on the properties of microspheres prepared using an emulsion-solvent extraction process, Chem.
Kobayashi, Influence of the degrees of hydrolyzation and polymerization of polyvinyl alcohol) on the preparation and properties of poly(DL-lactide-co-glycolide) nanoparticles, Int.
Online since: May 2011
Authors: Zhao Hui Han, Pei Xian Zhu, Xiu Qin Yang, Jian Xu
The electrochemical properties of the composite electrode materials is also much better than pure Ti anode, and preparation conditions on electrochemical properties and the resistivity is consistent with law.
This also shows that the conductivity of metal matrix will directly affect the catalytic properties of electrode materials for electrochemical.
The conductivity of the base metal will directly affect the catalytic properties of the electrochemical electrode materials[2], but Ti the resistance rate is high in the coating of titanium anode substrates, resulting in high electrode potential, as uneven distribution of surface potential to further improve anode comprehensive performance of the main bottlenecks.
Therefore, the thickness of the brittle phase which impact on the resistivity of Ti-Al composite materials is the main factors. 3) The electrochemical properties of the composite electrode materials Excellent electrochemical performance has a vital role to the application of electrode material.
Therefore, the electrochemical properties of the composites were tested by the electrochemical analyze instrument.
This also shows that the conductivity of metal matrix will directly affect the catalytic properties of electrode materials for electrochemical.
The conductivity of the base metal will directly affect the catalytic properties of the electrochemical electrode materials[2], but Ti the resistance rate is high in the coating of titanium anode substrates, resulting in high electrode potential, as uneven distribution of surface potential to further improve anode comprehensive performance of the main bottlenecks.
Therefore, the thickness of the brittle phase which impact on the resistivity of Ti-Al composite materials is the main factors. 3) The electrochemical properties of the composite electrode materials Excellent electrochemical performance has a vital role to the application of electrode material.
Therefore, the electrochemical properties of the composites were tested by the electrochemical analyze instrument.
Online since: June 2013
Authors: Ignaas Verpoest, Frank de Ridder, Marcin Barburski, Filip Lanckmans, Stepan Lomov
In recent years, textile fabric composites have been widely investigated because they offer a variety of structural applications, lower production cost and improvement of mechanical properties in the through the thickness direction.
The compaction behaviour of fabric preform has significant effects on process ability in terms of the permeability and compressibility of preform, and on the quality and mechanical properties of final product.
This has effects on process ability by altering the permeability of the reinforcement to resin flow and on the mechanical properties of the composite product.
Variation of the fabric thickness can affect the optical quality of the glass.
Deformation structure influences on the variation of the thickness dry textile but also properties of final composites.
The compaction behaviour of fabric preform has significant effects on process ability in terms of the permeability and compressibility of preform, and on the quality and mechanical properties of final product.
This has effects on process ability by altering the permeability of the reinforcement to resin flow and on the mechanical properties of the composite product.
Variation of the fabric thickness can affect the optical quality of the glass.
Deformation structure influences on the variation of the thickness dry textile but also properties of final composites.
Online since: December 2012
Authors: Da Lv, Xin Xin Zhang, Ming Deng
Urban Landfill Ecological Function and Planning
Ecological function
The land system is a complex material system at the surface not only including all the natural factors, landform, climate, geology, hydrology, soil, plants and animals, but also the impact on human productive activity, past or modern.
Looks unrelated but two aspects are mutually associated, affecting each other.Pollution Control and Prevention Landfill contour design Leachate treatment Landfill end-use Cover soil layer thickness Landfill Gas Collection Land subsidence and collase Cr-torlerant plants screening Landscape Vegetation Reconstruction Fig. 1 Landfill landscape ecological reconstruction design diagram Contour design and leachate decrement Contour design mainly refers to the external morphology of the landfill design, which it has manifested mainly through the shape design and the vegetation configuration.
Taking into account mechanical operation, plant growth and the safety of waste body ,it is suitable that the outward form with a slope is 1:3 in the landfill contour design. [3, 4] Cover soil layer thickness and vegetation protection Closed landfills have been converted to alternate uses for many years.
Table. 1 The covering layer thickness in closed landfill surface design(m) End-use Farmland Pasture Lawn Treen ursery Brush and Timberland Shallow-rooted trees Deep-rooted trees design thickness 1.5~2.0 2.0~3.0 1.0~1.5 2.0~3.0 1.5~2.0 2.0~3.0 3.0~5.0 Cr-torlerant plants screening and landscape construction Methane(CH4) and Carbon dioxide(CO2) stresses are two of the main factors limiting the survival and growth of greenbelt plants on landfill sites, while the selection of adaptive plants is of significance in the re-vegetation and recover of the ladfill.
Common lawn efficiency comparison is shown in table. 2.Then according the end-use , geographical position and trees specific properties, we can introduce ecological effect and attractive ornamental plants in order to meet at the garden green landscape evaluation index system.
Looks unrelated but two aspects are mutually associated, affecting each other.Pollution Control and Prevention Landfill contour design Leachate treatment Landfill end-use Cover soil layer thickness Landfill Gas Collection Land subsidence and collase Cr-torlerant plants screening Landscape Vegetation Reconstruction Fig. 1 Landfill landscape ecological reconstruction design diagram Contour design and leachate decrement Contour design mainly refers to the external morphology of the landfill design, which it has manifested mainly through the shape design and the vegetation configuration.
Taking into account mechanical operation, plant growth and the safety of waste body ,it is suitable that the outward form with a slope is 1:3 in the landfill contour design. [3, 4] Cover soil layer thickness and vegetation protection Closed landfills have been converted to alternate uses for many years.
Table. 1 The covering layer thickness in closed landfill surface design(m) End-use Farmland Pasture Lawn Treen ursery Brush and Timberland Shallow-rooted trees Deep-rooted trees design thickness 1.5~2.0 2.0~3.0 1.0~1.5 2.0~3.0 1.5~2.0 2.0~3.0 3.0~5.0 Cr-torlerant plants screening and landscape construction Methane(CH4) and Carbon dioxide(CO2) stresses are two of the main factors limiting the survival and growth of greenbelt plants on landfill sites, while the selection of adaptive plants is of significance in the re-vegetation and recover of the ladfill.
Common lawn efficiency comparison is shown in table. 2.Then according the end-use , geographical position and trees specific properties, we can introduce ecological effect and attractive ornamental plants in order to meet at the garden green landscape evaluation index system.
Online since: November 2005
Authors: Isabel Gutiérrez, Ane Martínez-de-Guereñu, F. Arizti, M. Oyarzabal
Background
The composition and microstructure of ferritic steels determine their mechanical and intrinsic
ferromagnetic properties.
Therefore, measurements of magnetic properties derived from hysteresis (B-H) loops can be used for the non-destructive evaluation of several material properties and for monitoring the microstructural evolution of the material during recovery and recrystallization.
Various factors, mainly based on early studies, contribute to this supposition.
Symp. on Interstitial Free Steel Sheet: Processing, Fabrication and Properties (L.E.
Symp. on Interstitial Free Steel Sheet: Processing, Fabrication and Properties (L.E.
Therefore, measurements of magnetic properties derived from hysteresis (B-H) loops can be used for the non-destructive evaluation of several material properties and for monitoring the microstructural evolution of the material during recovery and recrystallization.
Various factors, mainly based on early studies, contribute to this supposition.
Symp. on Interstitial Free Steel Sheet: Processing, Fabrication and Properties (L.E.
Symp. on Interstitial Free Steel Sheet: Processing, Fabrication and Properties (L.E.
Online since: August 2014
Authors: Aleš Dittrich, Pavel Brabec
Much of the final form of this component also contributes its load, which is both heat and mechanical.
These temperatures are influenced by many factors, especially temperature and coolant flow, load and engine speed, which affect the combustion process and exhaust gas temperature (the engine mode is constantly changing, therefore the thermal load on the valve seats is different).
Among the boundary conditions are, first, the parameters (properties) of used materials, but in particular the definition of heat transfer.
It is the mechanical and thermal stresses.
Calculated values of temperature distribution can be further used in the mechanical analysis (determination of strain and stress generated by the heat load).
These temperatures are influenced by many factors, especially temperature and coolant flow, load and engine speed, which affect the combustion process and exhaust gas temperature (the engine mode is constantly changing, therefore the thermal load on the valve seats is different).
Among the boundary conditions are, first, the parameters (properties) of used materials, but in particular the definition of heat transfer.
It is the mechanical and thermal stresses.
Calculated values of temperature distribution can be further used in the mechanical analysis (determination of strain and stress generated by the heat load).
Online since: August 2017
Authors: Juana Coello, Nuria Medina, Valentín Miguel, María Carmen Manjabacas, Alberto Martínez-Martínez
For that, turning processes were carried out on two different materials since their physical and mechanical properties have a relevant influence on the chip formation.
Although many factors influence on chip type, in the experience herein described only the feed rate is considered.
The camera is positioned in such a way that the complete material cutting process is viewed in order to analyse the different factors associated with it, as shown in Fig. 1.
Test strategy design The different tests were defined for two materials that presented very distinct physical and mechanical properties.
All these factors can affect the final finish of workpieces to a greater or lesser extent.
Although many factors influence on chip type, in the experience herein described only the feed rate is considered.
The camera is positioned in such a way that the complete material cutting process is viewed in order to analyse the different factors associated with it, as shown in Fig. 1.
Test strategy design The different tests were defined for two materials that presented very distinct physical and mechanical properties.
All these factors can affect the final finish of workpieces to a greater or lesser extent.
Online since: November 2007
Authors: Mohan J. Edirisinghe, Serena Best, Z. Ahmad, J.H. Robinson
A scaffold was produced using the
HA suspension produced at room temperature, but further understanding of the suspension
properties and the optimum conditions for coating of the PU foam are required for improved
mechanical performance.
Various factors can be considered in the optimisation of this reticulated foam technique and the properties of the ceramic suspension are fundamental.
Reaction temperature has been shown to have an effect on particle morphology [11-13] and this particle morphology affects the suspension properties and subsequently may effect the coating ability.
This high aspect ratio was associated with significantly more agglomeration, likely to be detrimental to the suspension properties.
• HA scaffolds have been produced showing good replication of the PU foam structure but clearly, further understanding of the suspension properties and the optimum conditions for coating of the PU foam are required for improved mechanical performance.
Various factors can be considered in the optimisation of this reticulated foam technique and the properties of the ceramic suspension are fundamental.
Reaction temperature has been shown to have an effect on particle morphology [11-13] and this particle morphology affects the suspension properties and subsequently may effect the coating ability.
This high aspect ratio was associated with significantly more agglomeration, likely to be detrimental to the suspension properties.
• HA scaffolds have been produced showing good replication of the PU foam structure but clearly, further understanding of the suspension properties and the optimum conditions for coating of the PU foam are required for improved mechanical performance.
Online since: April 2015
Authors: Miroslav Vacula, Tomáš Melichar, Jiří Bydžovský, Šárka Keprdová
Comparing the material properties of cement based composites such as concrete and cement-bonded particleboards, significant difference is evident.
Presence of glucose leads to the strength reduction of cement by affecting temperature and hydration process.
Content of any of these undesirable substances in raw materials, which form the composite system of the material, may have adverse effects that can lead to deterioration of wide range of the final material properties.
Possibilities of actuation on "wood sugar" (chemical and biological factors).
Studies on the characterisation of Biosealant properties of Bacillus sphaericus.
Presence of glucose leads to the strength reduction of cement by affecting temperature and hydration process.
Content of any of these undesirable substances in raw materials, which form the composite system of the material, may have adverse effects that can lead to deterioration of wide range of the final material properties.
Possibilities of actuation on "wood sugar" (chemical and biological factors).
Studies on the characterisation of Biosealant properties of Bacillus sphaericus.