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Online since: June 2011
Authors: Li Ping Zhao, Y.Y. Yao
For the flexible three-dimensional microstructure, the GMC single-cell method was applied to establish the mechanical model of the bending interface, and then the interface micro-element method based on composite materials was performed to work on the interfacial properties of weak interfaces and micro-mechanical behavior.
As a result, a flexible interface model for the interface stress was constructed and it would be helpful to improve the bending properties of the flexible three-dimensional microstructure.
Therefore, it would have a direct impact on the bending properties[1].
Aboudi[2] proposed the GMC general unit cell method and the nonlinear spring element model for analyzing the weak interface bonding properties of composite materials.
Fig.4c shows that under the constant response condition, the bending stress caused by bending moment has the greatest impact on the transverse tensile stress and strain, which is the main factor that affects the bond quality of interface.
Online since: October 2012
Authors: Xian Qi Sun, Chuan Shan Zhao, Xin Qiang Yang, Wen Yang Xu
Absorption and wet strength are main factors which can effects on the property of impregnated paper.
Its main properties are good absorption, certain wet tensile strength, uniform fiber net, and there is no hard block and hole on a surface.
One of the important factors causing white spot was that impregnated paper didn’t absorb enough resin.
However, their properties are different from the ones on the bamboo plywood formwork.
Absorption and wet strength were main factors which effected on properties of impregnated paper.
Online since: December 2011
Authors: Yong Zhang, Qing Chi Sun, Feng Kuo Zhao, Wei Bing Ma, Hai Quan Liu
The effect of nonstoichiometric Pb content on the properties of PZT has been studied.
However, the local structural grouping of the chemical composition exchange of the glass affects the amount of V"Pb in the crystal-grain layers and in this way influences the domain structure lability and its dielectric and piezoelectric properties [8].
The Pb2+ vacancies lead to the wall mobility and cause an observed increase in dielectric constant and loss, piezoelectric coefficients and coupling factors, and reduction in mechanical quality factor Qm and coercive field [9].
As reported, the dielectric properties will be badly affected by the PbO-rich amorphous intergranular layer (1-2 nm) [7].
Fig. 3 The dielectric constant of the samples with different Pb content as a function of temperature Table 1 Physical properties and dielectric properties of the specimens sintered at 1200 °C.
Online since: February 2011
Authors: Hong Zhao, Lin Qi, Fei Du, Chang Jiang Yu
This article studied on these factors which influences the surface strength of packing paper.
In the light of these problems, fiber composition and beating process were optimized and physical properties of off-set printing paper were researched.
But its will lead to paper thickness increase because of fibre properties.
[6] JahanM S, IslamM K, ChowdhuryD AN, eta.l Pulping and papermaking properties ofpati (Typha)[J].
Refining Intensity at Low Consistency-Critical Factors[J].
Online since: January 2013
Authors: Yong Yao, Xiao Ling Liu, Chao Wu Pei, Ting Lei
The interface zone in concrete is the weak link and its structures and properties are the key factors determining overall performance of concrete.
Introduction With the development of the more and more high strength and performance concrete, the interfacial properties between aggregate and mortar turn into the weakest links deciding the concrete mechanical performances[1-3].Concrete properties relates to a great degree to structures and performance of ITZ.
In these experiments , specimens interfaces was polished to be unlike to the actual structures and properties of the aggregate-mortar interfaces so that they couldn’t respond real strength as well as influences of the aggregates sizes.
With the increase of particle size of pebbles and projective areas, macro pull strength of the interfaces are affected by the strength of concrete.
Review of Study on Mechanical Property of Aggregate Mortar Interface Transition Zone of Concrete.
Online since: May 2022
Authors: Bai Cheng Feng, Ming Lei Hu, Cheng Peng Xie, Karen Amin
The hydrogel had good mechanical properties due to the homogeneous dispersion of MMT.
The resulting copolymer-NC gels were investigated for their mechanical and swelling properties.
Swelling rate increased first and then decreased, as analyzed by the two factors together.
The stress–strain curves of DEAA-AAm-AMPS|MMT organogels with different monomer ratios For copolymer hydrogel materials, monomer composition was the main factor affecting their tensile strength and elongation at break.
MMT’s uniform dispersion improved these hydrogels’ mechanical properties (tensile strength: 0.1 Mpa; elongation at break: 1807%).
Online since: July 2011
Authors: Yang Wang, Tie Jun Li, Jing Tang, Li Jun Yan
This paper presented the experiments of Nd:YAG pulsed laser cutting of titanium alloy, super-alloy and stainless steel sheet, and investigated the influences of different laser cutting parameters on the surface quality factors focusing surface morphology.
Introduction As important engineering material, titanium alloys, super-alloy and stainless steel have found extensive applications as airframe and jet engine components in the aerospace industry due to their properties [1-2].
However, these alloys are very difficult to machine due to their special physical and chemical properties.
Firstly, laser machining is a thermal process the effectiveness of which depends on the thermal properties rather than the mechanical properties of the material to be machined.
However, laser machining of these alloys leads to alterations of the surface properties of the machined zone.
Online since: November 2016
Authors: Fabíola A.S. Ribeiro, Gustavo C. Salles, Clascídia A. Furtado, Modestino A. Brito, Aloyso O. Figueiredo Jr., Norval Rodrigues de Oliveira Jr., Adelina P. Santos, Manoel R.F. Fernandes
Nowadays, the CNT have been one of the most used nanomaterials in the production of polymeric based composites, due their excellent thermal, electronic and mechanical properties.
The fluency of the castable was evaluated immediately after the mixing, as well as, the preparation of the bodies of proof to measure mechanical properties.
The mechanical properties were evaluated in the MRSA laboratory, based on NBR standard.
Castable properties.
Mechanical properties of the refractory castable samples with and without MWCNT: bulk density (BD), apparent porosity (AP) and hot modulus of rupture (HMOR).
Online since: July 2015
Authors: Breno Ferreira Lizardo, Luciano Machado Gomes Vieira, Juan Carlos Campos Rubio, Marcelo Araújo Câmara
TABLE 1 - PROPERTIES OF TESTED MATERIALS [12].
According to the authors [14] the feed rate and the drill diameter are admittedly as the most influential factors affecting the thrust force, while the feed rate and spindle speed brings the greatest contribution to the roughness of walls of the holes.
The feed rate and the diameter of the drill are admittedly the most influential factors affecting the axial force [14].
Factors affecting the machinability of GFR/epoxy composites.
The influence of surface roughness on the mechanical strength properties of machined short-fibre-reinforced thermo- plastics.
Online since: June 2010
Authors: Ming Duo Yang, Yong Qiang Ma, Chun Ran Han
Isolation methods, molecular structure (x-ray pattern) and important physiochemical properties of mung bean starch and influencing factors in recent studies were reviewed, which is helpful for the further and comprehensive use of mung bean starch.
Pasting properties The gelatinization temperature range of mung bean starch was 65-69-75°C [19].
The higher content of amylose in mung bean starch contributes to its special properties, different isolation methods effect the extraction rate, varieties in different areas demonstrated somewhat different properties.
Comparison of physico-chemical properties of legume starches.
Functional properties of food components, 2nded. (1991).Academic Press, New York, p.27-28 [27] T.J.Schoch and E.C.Maywald Preparation and properties of various legume starches.
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