Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: December 2012
Authors: Cheng Fan, Geng Chen, Shan Shan Wang
Because of its beautiful appearance, good physical and chemical properties, all-ceramic crown restorations are more widely used.
However, due to the brittle performance of ceramics, porcelain fracture and spalling fracture were often occurred and the use of all-ceramic restorations was greatly affected.
Meanwhile, the metal ions of the ceramic alloy not only make the porcelain prosthesis occurred fade, and some patients have metal allergies [3], the existence of these factors impels the development of the all-ceramic systems without metal basement structure.
However, the brittleness of the ceramic restoration is still the Achilles heel of restricting its application, greatly influence the reliability and stability of the material properties, also limit its features to play and practical application.
The main mechanical properties of all ceramic crown and crack germination, extension, penetrating and failure process was simulated in this paper and the results has important guiding significance for the clinical use of all-ceramic crown restoration.
Online since: May 2019
Authors: Arnold C. Alguno, Arnold A. Lubguban, Rey Capangpangan, Jessalyn C. Grumo, Lady Jaharah Jabber Bulayog
Moreover, these bio-based polyols exhibit high thermal stability, good elasticity and improved hydrolytic properties in the produced RPUF [8].
It is believed that blowing agent is of paramount importance especially in the formation of RPUF, affecting important properties such as thermal conductivity and mechanical strength.
[4] Kun Hyung Choe, Dong Soo Lee, Won Jin Seo, and Woo Nyon Kim, “Properties of Rigid Polyurethane Foams with blowing agents and Catalysts”
“Physical properties of polyurethanes produced from polyols from seed oils: II.
Factors contributing to k-factor optimization with ecomate blown foams”, Foam Supplies, Inc. 4387 N.
Online since: January 2011
Authors: Qing Guan Chen, Zhi Ge Chen
The third is about the influential factors of clothing pressure.
Some fabric mechanical properties correlated with pressure and clothing fitness were measured in order to evaluate pressure comfort well [1,6].
(3) The clothing pressure was affected by the fabric tension and pose of body.
Zhou: Journal of Textile Research, vol.26, No.2(2005), p. 78 [7] Z.G.Chen, Q.G.Chen, Y.Chen, H.Lu: Researches And Progresses Of Modern Technology On Silk, Textile And Mechanicals I (2007) [8] Information on http://www.eefocus.com/article/08-06/44604s.html [9] Gonzalez Rafael C and Woods Richard E,in: Digital Image Processing, edtied by Prentice Hall, 3rd Edition (2008) [10] LI Xiao-fei, MA Da-wei, NIAN Yong-jian: Image Technology, No.1(2005), p. 37 [11] L.Y.
Online since: May 2011
Authors: Gang Xu, Jing Zhao, Li Hua Zhao
Introduction Homogeneity degree of the asphalt mixture has a direct relationship with mechanical performance and service life of the asphalt pavement.
The inhomogeneity is also the most serious reason to cause the damage of the hot asphalt mixture pavement in many potential factors [1].
The technical properties of asphalt Project Experiment condition Detect results Matrix asphalt SBS modified asphalt Penetration (0.1mm) 25℃, 100g, 5s 88.3 64.6 Softening point (℃) Ring and ball method 48.5 65.5 Ductility (mm) 5cm/min,15℃ 109 78.8 Relative density (25℃) 1.033 1.030 Table2.
These factors have varying degrees to reduce the water stability of mixture.
(3) The homogeneity is not the major factor to affect the road performance of mixture, bad homogeneity mixture may not have a good way-use performance, and vice versa.
Online since: April 2019
Authors: Pedro Carreira, Artur Mateus, Cyril Santos, António Raimundo Silva, Miguel Reis
These algae have excellent antioxidant, antimicrobial, antifungal and anti-cancer properties and their nano-fibers are compatible with most foods because they are water-soluble, have no odor or color.
The deposition time, evaporation rate, whipping or instability interval easely affect the morphology of the nanofiber [13].
The selection of the solvent is one of the key factors for the formation of smooth and beadles electrospun nano-fibers.
Recently it has been reported that environmental factors, such humidity and temperature also affect the diameter and morphology of the nano-fibers.
Wang, Effect of Experimental Parameters on Morphological, Mechanical and Hydrophobic Properties of Electrospun Polystyrene Fibers, Materials (Basel). 8 (2015) 2718–2734.
Online since: January 2015
Authors: Wei Ke, Magdalene Edet Ikpi, Junhua Dong
The rate of corrosion reduced by a factor of 1.5 times that of AM60 alloy.
Research has further extended to the application of Mg and its alloys as engineering materials, addressing their efficiency for service as regards their corrosion resistance and mechanical properties [3].
Its desirable physical and mechanical properties make it an increasingly attractive material for light weight structural and functional applications in the automotive, aerospace and electronic industries.
Thus, the addition of about 2 wt.% Cd reduces the corrosion rate of AM60 by a factor of about 1.5.
The corrosion resistance of AM60 alloy was improved by about a factor of 1.5 when alloyed with about 2 wt.% Cd.
Online since: March 2017
Authors: Ahmad Fauzi Ismail, Mohd Hafiz Dzarfan Othman, Juhana Jaafar, Mukhlis Abdul Rahman, N. Awang
The fibers diameters and morphology were observed by using Scanning Electron Microscopy (SEM).While the mechanical properties of the fibers was observed via tensile strength test.
Mechanical strength.
Physico chemical properties of dense electrospun membranes.
The finest fibers obtained form e-spunCL17 showed the best physico chemical properties compared to others.
Mechanical properties of composites using ultrafine electrospun fibers.
Online since: March 2022
Authors: Olanrewaju Seun Adesina, Adebayo Felix Owa, Abayomi Adewale Akinwande, Oluwatosin Abiodun Balogun, Akeem Oladele Ademati, Ajisegiri Emmanuel, Bayode Julius Olorunfemi, Adeolu Adesoji Adediran
Table 1 shows the Properties of the clay, Table 2 shows the properties of the natural sand while the chemical constituents are shown in Table 3.
Future studies can explore the mechanical properties of the bricks with the same proportion of fiber.
Sohounhloue, "Influence of the Kenaf fiber length on the mechanical and thermal properties of compressed earth blocks (CEB)," KSCE.
Sujatha, "Physical, mechanical and durability properties of soil building blocks reinforced with synthetic fiber," Int.
Liang, "Factors affecting the swelling-compression characteristics of clay in Yichang, China," Advances in Civil Engineering, vol. 2019, no.
Online since: July 2014
Authors: Song Gu, Zhi Zheng, Xiao Lei Chang, Zong Kai Wang, Zhou Ming Liao, Zhou Xian Liao
The results show that the stiffness of the contribution and the confinement effect filler by factors geometry, masonry materials, the impact of the framework is not the same, need to consider the specific analysis and structural design.
So it is necessary to quantitative analyze various factors on the stiffness effect and the distribution of internal force of filler wall frame structure and make references to the seismic design of this structure.
FEMA [6] in the United States, points out that as two kinds of different ductility structure- filling wall and frame, the actual stiffness is the average stiffness when the body cracking or diagonal cracks through framework at the elastic stage, this is important deformation properties indicators of structure under normal working state, hereinafter referred to as elastic stiffness.
Masonry materials of filler wall is the main factor for filler wall’s failure mode.
But that mode affects(change) framework structure’s load path directly.
Online since: April 2012
Authors: Leo A.I. Kestens, Roumen H. Petrov, Jurij J. Sidor, Tuan Nguyen Minh
It is argued that by observing the proper rolling and annealing conditions a recrystallization texture with improved normal and planar anisotropy of the mechanical properties may be produced. 1.
Introduction One of the main drivers for research on texture control in metal sheet manufacturing is the optimization of the anisotropy of sheet properties.
The deep drawability, par excellence, is a mechanical property that requires a very specific crystal anisotropy.
Asymmetric rolling of aluminum alloys with FCC crystal structure Thermo-mechanical processing significantly affects the texture evolution in the 6xxx aluminum alloy as it is shown in Fig 5.
Taylor factor maps are calculated for both symmetric and asymmetric rolling processes, cf.
Showing 17141 to 17150 of 25958 items