Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: July 2013
Authors: Li Min Zhou, Cheng Yan, Lin Ma, Ning Hu, Qiang Yuan, Ming Chao Wang, Dilini Galpaya, Zheng Bo Lai, Ruixiang Bai
Pei et al. investigated the effect of functionalized groups on mechanical properties of graphene.
Some intrinsic or extrinsic factors, including chirality, structural defects, geometry sizes and substrate-interaction can greatly influence the morphology of graphene.
As confirmed by Zhao et al. [19], the possible model size effect on mechanical properties can be largely neglected when the diagonal length is over 5 nm.
Morphology of Graphene with Edge Functionalisation and Reconstruction For graphene nanoribbon (GNR), both edge functionalisation and reconstruction affect its electrical properties [27-29].
Geim, The electronic properties of graphene.
Online since: May 2014
Authors: Dermot Brabazon, Asnul Hadi Ahmad, Sumsun Naher
Mechanical properties of 7075 are higher than other aluminium alloy systems [15].
The selection of a proper thixoforming temperature range which results an increment in mechanical properties and reduces defect deformation.
The previous studies concentrated merely on the aluminium silicon alloy which has advantage in the flow ability but lower in the mechanical properties compared with the aluminium 7075.
[5] Brabazon D, Browne DJ, Carr AJ, Mechanical stir casting of aluminium alloys from the mushy state: process, microstructure and mechanical properties, Materials Science and Engineering A (2002) A326, 370-381
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, USA, 1992, Vol. 2
Online since: July 2012
Authors: Nurul Rozullyah Zulkepely, Siti Rohana Majid, Zurina Osman
Investigation of Ionic Conduction and Morphological Properties of PMMA-Based Polymer Electrolytes Containing Lithium Iodide Nurul Rozullyah Zulkepelya, Siti Rohana Majidb and Zurina Osmanc Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia arozullyah@siswa.um.edu.my, bshana@um.edu.my, czurinaosman@um.edu.my Keywords: polymer electrolytes, plasticizer, PMMA, LiI, conductivity, SEM.
The liquid electrolytes usually easy to evaporate, affect leakage and short circuit under high temperature operation.
The gel electrolytes have low mechanical stability properties and not suitable for applications electrochemical devices.
The conductivity and morphological properties will be investigated using impedance spectroscopy and SEM, respectively.
This is due to the high concentrations of the salt which affect the formation of neutral ion pairs and reduce the free mobile ions [9].
Online since: December 2009
Authors: S.J. Hosseinipour
In this paper the superplastic properties of a commercial 5083 aluminum alloy is studied.
It is well known that a primary factor in producing superplasticity is a fine grain size.
Grain refinement as a result of cold and hot working and recrystallization treatments, which called thermo-mechanical processing (TMP), has been used extensively in the development of superplastic properties [3-5].
Kaibyshev et al. [11] examined the superplastic properties and microstructural evolution of a 0.2% Zr and 1.6% Mn modified 5083 aluminum alloy.
It is well known that, in addition to affecting the grain size and cavitation, variations in the alloy composition and microstructure as well as small differences between sheets of nominally the same composition may also influence the superplastic formability [7].
Online since: July 2015
Authors: Ade Yeti Nuryantini, Muhammad Miftahul Munir, Annisa Rahma, Tri Suciati, Khairurrijal Khairurrijal
Among these properties are wound healing [5] and anti-bacterial activity [6].
These properties can be controlled in the manufacturing method [9].
In order to produce fiber with desired properties, the optimization was performed by changing the magnitude of the voltage.
The other factor affected the morphology of fibers is flow rate.
Hong, Preparation and properties of electrospun poly(vinyl alcohol)/silver fiber web as wound dressing, Polimer Eng.Sci. (2007) 43-46
Online since: October 2014
Authors: Hu Li Niu, Zong Tao Fang, Yan Hua Hu, De Yu Tang
It has been shown that [5], the crack initiation and propagation is not affected by stress s ratio and the maximum stress.
Actually, the acting factor is stress amplitude, i.e., Δσ=σmax—σmin.
Therefore, in the process of full-scale fatigue tests (four-point bending + inner pressure), the main influencing factors, including welding residual stress, stress concentration, initial defects, internal pressure shutdown and pressure fluctuation should be taken into consideration comprehensively.
The chemical composition and mechanical properties of pipes are shown in table 1 and table 2.
Table 1 Chemical Composition Steel grade C Mn P S Nb V Ti X65 <0.26 <1.4 0.04 0.05 0.005 0.005 0.005 Table 2 Mechanical property Yield strength(ss)/MPa Tensile strength(sb)/MPa Extensibility(δ)/ % >448 >530 30.7 The length of full-scale specimen is 8m.
Online since: October 2014
Authors: Ewa Jonda, Krzysztof Labisz, Tomasz Tański, Wojciech Borek, Małgorzata Czaja
Therefore the main goal of laser remelting of material surface layers is to modify the structure and increasing the mechanical and functional properties.
Cizek, L, Influence of heat treatment on structure and properties of the cast magnesium alloys, Advanced Materials Research 15-17 (2007) 491-496 DOI: 10.4028/www.scientific.net/AMR.15-17.491 [3].
Jonda, Diode laser modification of surface gradient layer properties of a hot work- tool steel, Materials Science Forum 532-533 (2006) 657-660
Tański, J Domagala-Dubiel, Unique properties, development perspectives and expected applications of laser treated casting magnesium alloys, Archives Of Civil And Mechanical Engineering 12/3 (2012) 318-326 DOI: 10.1016/j.acme.2012.06.007 [9].
Zaclona, The modelling of high-speed steels' properties using neural networks, Journal of Materials Processing Technology 157 (2004) 245-249
Online since: February 2009
Authors: Shalaka C. Navale, Farid Jamali Sheini, Sandip S. Patil, Imtiaz S. Mulla, Dilip S. Joag, Mahendra A. More, Suresh W. Gosavi
Field Emission Properties of Al-doped ZnO Nanostructures Shalaka C.
The field enhancement factors, estimated from the slope of the F-N plots, are found to be ~ 9.3 x 10 3 and 3.9 x 10 3 for 1% and 3% Al-doped ZnO emitters, respectively.
Introduction With the advent of nanotechnology, one-dimensional nanostructures of metals and semiconductors having different morphologies such as wires, belts, rods and tubes have attracted considerable attention due to their unique physical and chemical properties leading to diverse technological applications.
It is well known that addition of impurities in the semiconducting lattice alters its electrical properties significantly.
This implies the formation of defect states, which in turn affect the emission current.
Online since: November 2014
Authors: Shigeki Hontsu, Tsutomu Nishigaki
It has been well known that bone has piezoelectric properties and these properties have been considered to be caused by the shift of the center of symmetry of the positive and negative electrical charge due to the strain of the collagen fibers included in the bone.
Introduction It has been well known that bone has piezoelectric properties[1] and it has been said that this properties affect the process of growth and the remodeling of bone.
In the authors’ previous report, HAp thin films were deposited on a Ti or Pt substrate using PLD method, and piezoelectric properties of the HAp film were estimated by measuring vibration responses of the mechanical strains and electrical voltages of the HAp structure simultaneously[5].
Further experiments were needed to establish the fabrication method of HAp films with excellent piezoelectric properties, which are currently ongoing projects.
Hontsu, Measurement of piezoelectric properties of pulsed laser deposited hydroxyapatite thin films on platinum or titanium substrate, Bioceramics Development and Applications, S1-008 (2013) [6] H.
Online since: July 2008
Authors: Florian Kempel, Alois K. Schlarb
The influence of the filler content, the dispersion quality and the filler geometry on the electrical properties of NCF/epoxy composites was investigated as a function of the mechanical loading.
Variation in the NCF contacts for example owing to mechanical deformation results in a change of the electrical properties of the composite material.
Nevertheless, the mechanical properties could not be significantly improved by the addition of 1 wt% MWCNTs (not shown here).
But, compared to the impact of the dispersion state on the mechanical properties, the electrical properties are not stronger affected.
To determine the electrical properties under mechanical load, tensile tests with simultaneous resistance measurements were conducted, as described above.
Showing 14311 to 14320 of 26166 items