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Online since: May 2013
Authors: Ahmad Aroziki Abdul Aziz, Sakinah Mohd Alauddin, Ruzitah Mohd Salleh, Mohammed Iqbal Shueb
Generally, mechanical properties become poorer as loading amount increase.
Melt Flow Index values for physical properties also provide same trend as mechanical properties results.
Furthermore, it is well-known that particle size plays a major role and important parameter of flame retardant additives, which possibly affect the mechanical properties and fluid properties of composites.
As a result the competition between these factors indicates the trend of change of tensile properties.
In addition, these improvements can be attributed to two factors.
Melt Flow Index values for physical properties also provide same trend as mechanical properties results.
Furthermore, it is well-known that particle size plays a major role and important parameter of flame retardant additives, which possibly affect the mechanical properties and fluid properties of composites.
As a result the competition between these factors indicates the trend of change of tensile properties.
In addition, these improvements can be attributed to two factors.
Online since: December 2013
Authors: Nikita V. Martyushev, Yuriy N. Petrenko, Ilya V. Semenkov
Data on mechanical properties of the material under investigation are also reported in the paper.
In the paper under consideration the author has conducted a research the objective of which is to find out how alteration of the cooling rate affects the leaded tin bronze (C93700 or CC495K) structure and properties.
Previous author’s research on the influence of cooling rate on leaded bronze properties revealed inverse dependence, i.e. with the increase in cooling rate the mechanical properties of the casts decreased [3].
These factors will have their effect which is also dependent upon cooling rate.
The presence of several factors makes unambiguous identification of the results impossible.
In the paper under consideration the author has conducted a research the objective of which is to find out how alteration of the cooling rate affects the leaded tin bronze (C93700 or CC495K) structure and properties.
Previous author’s research on the influence of cooling rate on leaded bronze properties revealed inverse dependence, i.e. with the increase in cooling rate the mechanical properties of the casts decreased [3].
These factors will have their effect which is also dependent upon cooling rate.
The presence of several factors makes unambiguous identification of the results impossible.
Online since: April 2022
Authors: Rajnish Kurchania, Saket S. Phadkule, Kumar Navin, Archana Nigrawal, Richard J. Ball
Factors affecting the tensile properties include (i) the presence of additives, impurities, or fillers, (ii) environmental conditions such as temperature, humidity, and (iii) physical properties including geometric size and shape, orientation, morphology, crystallinity and surface condition.
The mechanical properties of nanocomposites are influenced by factors including dispersion, particle surface area, and the intermolecular interactions of different functional groups present in the matrix and filler of the composites [49].
The variation of mechanical properties of different nanocomposite films is shown in Fig.8.
Chauhan, A review on mechanical and water absorption properties of polyvinyl alcohol based composites/films, J.
MohammadiNafchi, The effects of SiO2 nanoparticles on mechanical and physicochemical properties of potato starch films, J.
The mechanical properties of nanocomposites are influenced by factors including dispersion, particle surface area, and the intermolecular interactions of different functional groups present in the matrix and filler of the composites [49].
The variation of mechanical properties of different nanocomposite films is shown in Fig.8.
Chauhan, A review on mechanical and water absorption properties of polyvinyl alcohol based composites/films, J.
MohammadiNafchi, The effects of SiO2 nanoparticles on mechanical and physicochemical properties of potato starch films, J.
Online since: February 2012
Authors: Wei Min Liu, Yong Hui Zhou, Jun Zhao, Xing Ai
The relative density and mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composites were tested.
With the increase of sintering temperature, the relative density and mechanical properties of the composites increased first and then decreased.
Fig.3 Relationship between relative density of the specimens and sintering temperatures Mechanical properties of the composites.
Based on Ryskewitch’s empirical formula, the porosity is a major factor which affects the strength of the composites[11].
To sum up, the mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composite is mostly proportional to its relative density, so the densification of the composite is in favor of the improvement of its mechanical properties [12, 13].
With the increase of sintering temperature, the relative density and mechanical properties of the composites increased first and then decreased.
Fig.3 Relationship between relative density of the specimens and sintering temperatures Mechanical properties of the composites.
Based on Ryskewitch’s empirical formula, the porosity is a major factor which affects the strength of the composites[11].
To sum up, the mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composite is mostly proportional to its relative density, so the densification of the composite is in favor of the improvement of its mechanical properties [12, 13].
Online since: August 2013
Authors: Cheng Sun, Li Qiang Huang, Yong Sheng Ma, Xin Ni Mu
Research on in-planestatic mechanical performance of honeycombpaperboard based on virtual simulation
Xinni Mu1, a, Cheng Sun1,2,b, LiqiangHuang2,c and Yongsheng Ma2,d
1Tianjin Vocational Institute, Tianjin 300410, P.R.
Simulation analysis was made with the factors of the base paper and the structure of honeycomb paperboard by means of ANSYS after abstract and simplify honeycomb paperboard model.The results show thatfactors ofquantification of surface paper, cell length, paperboard thickness and aperture ratio all have a great effect onthe mechanics performance of honeycomb paperboard.
With the increase of cell length and paperboard thickness, the platform stress and peak stress under different compression direction of honeycomb paperboard all decrease, providing a reference for the study of numerical simulation and mechanical property tests.
Introduction Predecessors have done a lot of research work to the metalhoneycomb materialsonin-plane mechanical properties, andmost of the research work is based on the theory and experiment.Because paper is soft and anisotropy, so the mechanical properties and damage forms of honeycomb paperboard are complex, the existing research achievements cannot fully reflect the in-plane mechanical properties of honeycomb paperboard.This paper will make a scientific finite element modeland do in-plane stress analysiswith the help of ANSYS,it will be easy to verify all kinds of factors affecting the performance of the honeycomb paperboard, providing a reference for the study of numerical simulation and mechanical property test.
The effect of surface paper is higher than the core paper on the performance of honeycomb paperboard.Paperboard thickness, cell length and aperture ratio all have a great influence to the in-plane performance of honeycomb paperboard, with the increase of cell length andpaperboard thickness, the platform stress and peak stress under different compression direction of honeycomb paperboard all decrease,providing a reference for the study of numerical simulation and mechanical property tests.
Simulation analysis was made with the factors of the base paper and the structure of honeycomb paperboard by means of ANSYS after abstract and simplify honeycomb paperboard model.The results show thatfactors ofquantification of surface paper, cell length, paperboard thickness and aperture ratio all have a great effect onthe mechanics performance of honeycomb paperboard.
With the increase of cell length and paperboard thickness, the platform stress and peak stress under different compression direction of honeycomb paperboard all decrease, providing a reference for the study of numerical simulation and mechanical property tests.
Introduction Predecessors have done a lot of research work to the metalhoneycomb materialsonin-plane mechanical properties, andmost of the research work is based on the theory and experiment.Because paper is soft and anisotropy, so the mechanical properties and damage forms of honeycomb paperboard are complex, the existing research achievements cannot fully reflect the in-plane mechanical properties of honeycomb paperboard.This paper will make a scientific finite element modeland do in-plane stress analysiswith the help of ANSYS,it will be easy to verify all kinds of factors affecting the performance of the honeycomb paperboard, providing a reference for the study of numerical simulation and mechanical property test.
The effect of surface paper is higher than the core paper on the performance of honeycomb paperboard.Paperboard thickness, cell length and aperture ratio all have a great influence to the in-plane performance of honeycomb paperboard, with the increase of cell length andpaperboard thickness, the platform stress and peak stress under different compression direction of honeycomb paperboard all decrease,providing a reference for the study of numerical simulation and mechanical property tests.
Online since: March 2017
Authors: Noor Najmi Bonnia, Wan Nor Raihan Wan Jaafar, Siti Norasmah Surip
The mechanical properties of kenaf bast composites (KBC) and kenaf core composites (KCC) were studied by performing flexural and impact testing.
The effect of acid concentration on the mechanical properties & crystallinity of bio-composites was studied.
Silkworm silk/poly(lactic acid) biocomposites: Dynamic mechanical, thermal and biodegradable properties.
“Green” composites from recycled cellulose and poly(lactic acid): Physico-mechanical and morphological properties evaluation.
Fundamental factors affecting biomass enzymatic reactivity.
The effect of acid concentration on the mechanical properties & crystallinity of bio-composites was studied.
Silkworm silk/poly(lactic acid) biocomposites: Dynamic mechanical, thermal and biodegradable properties.
“Green” composites from recycled cellulose and poly(lactic acid): Physico-mechanical and morphological properties evaluation.
Fundamental factors affecting biomass enzymatic reactivity.
Online since: April 2018
Authors: Martina Syrovátková, Pavel Srb, Petr Kulhavý, Blanka Tomková
This article deals with assessment of mechanical properties and possible technical usability of flax prepreg composite materials.
Mechanical properties of materials are the decisive factor for selection of their suitable industrial application.
The main step was to describe the process of acquiring basic mechanical properties of one layer.
Carbon, glass and aramid fibres have excellent mechanical, chemical and thermal properties and represent most commonly used fibre reinforcements.
Mechanical Tests The mechanical properties of flax fiber-reinforced composite were tested.
Mechanical properties of materials are the decisive factor for selection of their suitable industrial application.
The main step was to describe the process of acquiring basic mechanical properties of one layer.
Carbon, glass and aramid fibres have excellent mechanical, chemical and thermal properties and represent most commonly used fibre reinforcements.
Mechanical Tests The mechanical properties of flax fiber-reinforced composite were tested.
Online since: March 2014
Authors: Xiu Xia Liang, Yao Chen, Shuang Qiu
Resin concrete generally has good mechanical properties, excellent thermal stability and great vibration resistance, the model of the ultra-precision machining center bed is established to study the thermal stability of the resin concrete using virtual reality and collaborative simulation technology based on Pro/E and ANSYS Workbench.
The main factors that affect the machine tool bed thermal deformation were found through analyzing the deformation results and the materials and restrain conditions were optimized.
Thermal deformation of the machine tool is the main factors that affects the quality of the products and 40% to 70% of manufacturing errors are determined by thermal deformation in precision machining [3].The machine tool bed is the basic support-loading unit and supports the worktable, spindle box and other key parts, thus the machining accuracy and the surface quality are largely determined by the thermal stability of the machine tool bed.
It is a kind of anti-corrosive new engineering material with high strength, good vibration absorbing properties and thermal stability compared with the traditional materials.
Summary On one hand, the thermal deformation status of the guide rail and the machine tool bed was obtained in the finite element analysis of machine tool thermal properties.
The main factors that affect the machine tool bed thermal deformation were found through analyzing the deformation results and the materials and restrain conditions were optimized.
Thermal deformation of the machine tool is the main factors that affects the quality of the products and 40% to 70% of manufacturing errors are determined by thermal deformation in precision machining [3].The machine tool bed is the basic support-loading unit and supports the worktable, spindle box and other key parts, thus the machining accuracy and the surface quality are largely determined by the thermal stability of the machine tool bed.
It is a kind of anti-corrosive new engineering material with high strength, good vibration absorbing properties and thermal stability compared with the traditional materials.
Summary On one hand, the thermal deformation status of the guide rail and the machine tool bed was obtained in the finite element analysis of machine tool thermal properties.
Online since: November 2011
Authors: Fabrizia Caiazzo, Vincenzo Sergi, Francesco Cardaropoli
Besides mechanical properties, the manufacturing process was also examined in order to evaluate its characteristics.
The laser system adopts a “dual focus” technology in order to reach a compromise in terms of the resolution of details, part density and relative mechanical properties.
Another factor, which might have modified powder properties, is oxidation.
The analysis of all these factors helps to determine the optimal processing window, guaranteeing sintering efficacy, with satisfactory mechanical properties and a low residual porosity, as well as good dimensional and shape tolerance.
Mechanical properties, surface roughness and parts accuracy have been evaluated for Direct Metal 20.
The laser system adopts a “dual focus” technology in order to reach a compromise in terms of the resolution of details, part density and relative mechanical properties.
Another factor, which might have modified powder properties, is oxidation.
The analysis of all these factors helps to determine the optimal processing window, guaranteeing sintering efficacy, with satisfactory mechanical properties and a low residual porosity, as well as good dimensional and shape tolerance.
Mechanical properties, surface roughness and parts accuracy have been evaluated for Direct Metal 20.
Online since: November 2012
Authors: M. Fatima Vaz, Luis Guerra Rosa, I. Aleixo, A.C. Vale, M. Lúcio, P.M. Amaral, H. Canhão, J.E. Fonseca, J. Caetano-Lopes, A. Rodrigues
Bone strength is affected by several intrinsic factors, such as, bone geometry/architecture, bone density, age, sex and disease [2, 4, 5].
The geometry and the dimensions of bone specimens were found to influence the mechanical properties of bone [10].
We found that, an alteration in the aspect ratios gave rise to changes in the mechanical properties around 10%.
Li, R.M Aspden, Composition and mechanical properties of cancellous bone from the femoral head of patients with osteoporosis or osteoarthritis.
Taddei, Mathematical relationships between bone density and mechanical properties: A literature review.
The geometry and the dimensions of bone specimens were found to influence the mechanical properties of bone [10].
We found that, an alteration in the aspect ratios gave rise to changes in the mechanical properties around 10%.
Li, R.M Aspden, Composition and mechanical properties of cancellous bone from the femoral head of patients with osteoporosis or osteoarthritis.
Taddei, Mathematical relationships between bone density and mechanical properties: A literature review.