Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: March 2013
Authors: H. Miao, R.H. Zhang
Before loading, the material parameters in Table 1 are added to the properties.
Table1 Material properties Material Poisson ratio Elasticity modulus [MPa] Yield strength[MPa] Hardelling index Densiy (g/mm3) 5050 0.3 2.07×105 270 0.27 7.85×103 Fig.1 Stamping size A Single Factor Analysis Die Gap (D).
Fig.2 is simulative results of different die gaps (D) (other factors are certain).
Analysis of Multiple Factors Experimental Design.
Table 4 shows that the drawbead height (h) is the most important parameter affecting the minimum thickness.
Online since: May 2012
Authors: Mirela Toth-Taşcău, Dan Ioan Stoia, Cosmin Locovei, Aurel Raduta
Using of recycled powder affects the part structure and mechanical properties.
Due to the sintering process, the parts fabricated by SLS technology have good dimensional accuracy and mechanical properties.
The powder properties and process parameters have a great influence on the dimensional accuracy, roughness, and mechanical properties of the SLS parts.
Thus, future works will investigate the influence of the energy density on the mechanical properties of the studied samples.
Lago, Statistical evaluation of laser energy density effect on mechanical properties of polyamide parts manufactured by selective laser sintering, J.
Online since: September 2011
Authors: Yong Yang, Li Qiang Tang, Guo Hui Wu
A mechanical model of the visco-elastic compressible material is established in order to investigate the viscous effect in quasi-static growing crack-tip field.
The results indicate that the near-tip fields are mainly governed by the creep exponent ; the stress fields of mode I and mode II is slightly affected by the elastic compressible deformation; the strain and displacement fields of mode I are deeply affected by the elastic compressible deformation.
However, the strain and displacement fields of mode II are less affected by the elastic compressible deformation.
Introduction Under high temperature, many metals show viscoelastic properties, which are closely related to environmental factors and strain rate.
So visco-elasticity has drawn much attention in the mechanical and engineering fields.
Online since: May 2013
Authors: Guo Wei Wang, Qing Shan Li, Wei Hong, Guang Zhong Xing, Jing Sun, Xin Chun Wang
The structures, mechanical properties, and optical properties of the composite films were detected by infrared spectroscopy, TG, DSC, XRD.
The results show that: Nano TiO2 fill added to the PVA matrix to improve the mechanical properties of PVA, thermal stability and UV shielding performance.
PVA film having abrasion resistance, tear resistance, and resistance to organic solvents, and antistatic properties, gas barrier properties, transparency, and good biodegradability, good biocompatibility, good electrochemical stability, good heat-sealing sexual performance [1].
The Nano TiO2 powder added to the matrix of the PVA film casting solution prepared by nano-TiO2 / PVA composite film, and the structure and mechanical properties of the composite films, optical properties, thermal properties, such as the characterization tests. 1 Experiment Preparation of Nano TiO2 powder Take a certain amount of Tetrabutoxide dissolved in anhydrous ethanol, adding acetic acid, to delay Tetrabutoxide strong hydrolysis.
Agglomeration impact on the mechanical properties of the composite film, thermal properties, and all affects the morphology of the composite material, there is a limit to its range of applications and therefore needs to be improved to reduce agglomeration. 3 Conclusions Nano-TiO2 was added to the PVA-based body, improving the mechanical properties of the PVA, thermal stability, and the ultraviolet-shielding performance.
Online since: September 2013
Authors: T. Dharma Raju, P.N.E. Naveen
All of the different fibers used in composites have different properties and so affect the properties of the composite in different ways. 2.2 What is a composite?
In the studies on mechanical performance and properties of short fiber reinforced polymer composites [7] have shown that both fiber length distribution and fiber orientation distribution play very important role in determining the mechanical properties [11] ,who believed that mechanical properties of the natural fiber composites depend on several factors such as the stress strain behaviors of fiber and matrix phases, the phase volume fractions and the distribution and orientation of the fiber or fillers relative to one another.
The mechanical properties of coir fibers are shown in Table3.
The mechanical properties of polyester resin are given in table4.
Table4: Mechanical properties of polyester resin [9].
Online since: May 2014
Authors: Roberto Montanari, Laura Ciambella, Riccardo Donnini
Tungsten is a promising armour material for plasma facing components of nuclear fusion reactors (NFR) because of its low sputtering rate and favourable thermo-mechanical properties (high melting point and good thermal conductivity).
This paper reports some results of an experimental campaign carried out for investigating the microstructural characteristics and the mechanical properties of tungsten (99.97% purity; 5% porosity) for fusion applications.
Morphology, structure, integrity and mechanical properties of the coatings have been extensively investigated [3,6-7].
This paper reports results of an experimental campaign carried out for investigating the microstructural characteristics and the mechanical properties of bulk tungsten.
Grain size is not affected by the heat treatment at 500 °C which only induce a small decrease of dislocation density.
Online since: May 2011
Authors: Lie Feng Liang, Jie Weng, Xiao Yi Han, Xiao Cai Yan
The primary aim of the study is to improve mechanical properties of the scaffold by introducing the fiber with uniform component relative to the scaffold.
The primary aim of the study was to improve the mechanical properties of the scaffold by introducing the fiber uniform component relative to the scaffold. 2.
Scaffolds with different pore size and connectivity could affect such transport properties.
The fiber introduction and PFA addition were shown to influence the mechanical properties of reinforced ceramic block differently.
The addition of HA fiber can enhance the mechanical properties among samples and also the strength for a given open porosity.
Online since: October 2015
Authors: Hyun Chul Kim, T.H. Dung, Tran Anh Vo
However, CMMs are sensitive to environmental factors such as humidity, suspended dust and oil, vibrations, and especially temperature.
However, ambient temperature and temperature gradients are the most critical factors affecting CMM performance on the shop floor.
Because of these spatial and temporal gradients, in combination with thermal properties of the material used, shape and size of a machine will change in time.
Therefore, we mainly focused on two crucial factors that relate to temperature effects, i.e. material selection, loop structure.
Conclusion Coordinate measuring machines working on the shop floor were affected by environment factors and loop structure of the machine result in the inaccuracy, especially in large machines.
Online since: May 2021
Authors: Jia Jiun Lai, Jasman Y.H. Chai, Basil T. Wong
To obtain an optimum enhancement from the inclusion of nanoparticles, their dimensions and separation distances are essential factors.
The optical properties for each layer are obtained from [2].
Default values specified for various electrical and thermal properties.
With other miscellaneous subroutines to compute various properties.
If all these factors cause a drop in the fill factor, it means that the resulting cell is actually having a decreased performance due to other increased losses.
Online since: October 2007
Authors: Yukichi Umakoshi, Takuya Ishimoto, Yasuhiko Tabata, Takayoshi Nakano, Masaya Yamamoto
It is well known that such microstructural parameters as the density of BAp (bone mineral density; BMD), collagen cross-linkage, BAp crystallinity, and the texture of collagen/BAp affect the material property of bone tissue [1].
In addition, we also aimed to analyze the controlling factors for the material parameter by densitometric and crystallographic measurements of the regenerated bone tissue.
Controlling factors for material parameter The material parameter cannot recover even at 12 weeks after the operation, as shown in Fig. 3(b).
To find factors controlling the ultimate stress as the material parameter, the preferred orientation of BAp crystallite is focused on because of its anisotropic mechanical property of BAp [2,3].
To identify a dominant controlling factor which contributes to the ultimate stress as the material property, multiple linear regression analysis was done.
Showing 4931 to 4940 of 26166 items