Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: January 2015
Authors: Dorin Rus, Lucian Capitanu, Virgil Florescu
The glass nature has importance on the time constancy of mechanical, electrical and chemical properties of reinforced thermoplastic material.
Glass containing metal oxides is used in certain proportions in order to improve the mechanical properties, in particular elastic modulus.
Tests carried out have had the purpose of determining the influence of the main factors affecting the friction in the case of thermoplastic material reinforced with glass fibres/ metal couplings.
Frictional Properties of Polyethylene, Wear 19(1): 37-52 (1973)
Zhang, Tribological properties of epoxy-nanocomposites: 2.
Online since: May 2006
Authors: Isabel B. Leonor, Rui L. Reis, H.S. Azevedo
Incorporation of Proteins with Different Isoelectric Points into Biomimetic Ca-P Coatings: a New Approach to Produce Hybrid Coatings with Tailored Properties H.
Therefore, when designing bone substitutes with outstanding properties, the implant should be not a single material but a combination of two materials.
An example of such combination is the biomimetic coating technique, which has been developed for the formation of a Ca-P osteoconductive coating on implant surfaces with high mechanical properties.
The good performance of Ca-P-coated implant depends on several factors such as the degradability of the coating and the variation in bond strength at the coating-implant surface.
This approach could be used in controlled release applications of biologically relevant proteins (e.g. growth factors) and thus control cellular interactions that are important in hard tissue regeneration.
Online since: May 2015
Authors: Jian Min Wang, Wen Tao Hou, Lin Lu
Preparation and Mechanical Properties of Ultra-fine Grain Medium-carbon Steel Based on Equal-channel Angular Pressing Jianmin Wang1*, Wentao Hou1 , Lin Lu1 1School of Material Science and Engineering , Jiangsu University, Zhenjiang,Jiangsu,China *Corresponding author, email:jmwang1959@126.com Keywords: Equal-channel Angular Pressing(ECAP), Martensite Phase Transformation, Ultra-fine Grain, Severe Plastic deformation, Zener-Holloman Parameter Abstract: A new technology of preparing submicron medium-carbon steel quickly using martensitic steel by equal-channel angular pressing is developed.
Severe plastic deformation (SPD) is the most effective way to refine grains, perfect the microstructure and improve the comprehensive performance of materials. 1-5 But only on the condition of great deformation degree can submicron ultra-fine grains be acquired.6 During SPD, due to factors such as crystal structure of steel, deformation mode, etc., plastic deformation mechanism is different, and thus the plasticity performance and the process of grain refinement are affected.
The crossing angle φ of the two channels affects the deformation degree.
Xu Xiao-jing .et al, China Mechanical Engineering, 2006, 17 (S2), 384-387
LU Jin .et al, China Mechanical Engineering, 2006, 17(24), 2618-2621, 2627
Online since: March 2014
Authors: Jim C. Newman Junior, Chun H. Wang, Kevin Walker
School of Aerospace Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia 3.
Mississippi State University, Mississippi, USA akevin.walker@dsto.defence.gov.au, bchun.wang@rmit.edu.au , cj.c.newman.jr@ae.msstate.edu Keywords: cracks, closure, fatigue crack growth, plasticity, fracture surface roughness, spectrum loading Abstract Crack closure is an important factor affecting fatigue crack growth in high strength alloy materials.
However, extreme values of plastic constraint factors, significantly lower than those determined from three dimensional finite element studies on similar geometry, are needed to achieve good correlation with experimental results, particularly for materials which exhibit rough and tortuous fatigue surfaces.
Analysis using this new approach, with plastic constraint factors more closely aligned with the values determined from independent classical and three dimensional finite element studies, provide a solid basis from which to implement the approach in FASTRAN.
[15] Walker, K.F., and Newman, J.C., Jr., A new approach to determine near-threshold fatigue crack growth rate properties in high strength coarse-grain titanium alloy with rough and torturous fatigue surfaces, in 27th ICAF Symposium. 2013: Jerusalem, Israel
Online since: June 2017
Authors: Azwan Iskandar Azmi, Chang Chuan Lee, M.M.W. Irina
Table 1 shows the mechanical properties of [CW2]6 hybrid composite arrangement that presents in this project, where C and W are weaved carbon fiber and glass fiber respectively.
These properties were determined through ASTM D3039, ASTM D790 and D3171standards, for volume tensile, flexural and volume fraction properties.
A 2k factorial designs have been utilized in the experiment to study the joint effect of parameter factors on output, where k represent the number of factors.
The F-value of each factor at 95% confidence level are considered as significant factors to the surface roughness when the factor is higher than the statistical table value (F0.05,1,19 = 4.38).
Davies, “Flexural Properties of E Glass and TR50S Carbon Fiber Reinforced Epoxy Hybrid Composites,” J.
Online since: October 2014
Authors: S. Sharif, Wahaizad Safiei, Ahmad Fairuz Mansor, Mohd Halimudin Mohd Isa
The result shows that the peak current was the most significant factors to all variable responses.
The surface of the work piece gets affected heavily because of variation in processing variables which depend on material and because of this, some adverse effects in terms of properties are observed.
These properties can vary to different levels with the variation in the main processing parameters.
According to analysis done by Design Expert software, if the value of probability (Prob > F) are less than 0.05, it indicates that the factors are significant to the response parameters.
Conclusion · All parameter selected for this experiment, peak current, pulse on time and pulse off time are significant factors.
Online since: January 2009
Authors: Cui Hong Chen, Yuan Wang, Da Li Zhang
Study on Durability of C100 Concrete in Shenyang Royal WAN XIN Hotel Da-Li Zhang1,a, Yuan Wang 1,b , Cui-Hong Chen1 1 Liaoning Province Building Science Research Institute, Shenyang 110005, liaoning,China a mail: zdl_3000@sina.com; bmail: lnwy@yahoo.com.cn Keywords: super-high strength concrete; durability; tests Abstract: Durability of C100 concrete in Shenyang WAN XIN Hotel engineering including long-term mechanical properties, dynamic modulus of elasticity, and chloride ion resistance was tested and analyzed.
Change of dynamic modulus of elasticity Determination of dynamic modulus of elasticity is a possible examination method in durability tests, and mainly uses to examine the internal structure change of concrete under each kind of factors.
And if it drops, there are some damages, and then the durability of long-term concrete will receive affects.
The research indicates C100 concrete can guarantee the stability of the long-term mechanical performance sufficiently and not deteriorate although its water-cement ratio is very low. 2.
Online since: September 2016
Authors: Emran Baharudin, Luke Bisby, Tim Stratford
Amongst other factors, the assumed tensile strength of the concrete is crucial to accurately predict response.
Concrete thermal properties were based on recommendations from Eurocode 2 [6] in the model.
Material thermal properties and all other heat transfer parameters follow recommendation from Eurocode 2 [6].
The assumed material properties adopted for the model are shown in Table 1.
Various factors may be contributing to this behaviour.
Online since: March 2006
Authors: J. Gerardo Cabañas-Moreno, Heberto Balmori-Ramírez, Francisco Cruz-Gandarilla, R. Gayosso-Armenta
The Transformation of Co-Rich Alloys Produced by Mechanical Alloying F.
Whichever the case, these results do not affect the main conclusions derived from the present study.
The fact that no singlephase Co2Ti specimen has been produced in the present work (or reported elsewhere, as far as we know) by heating mechanically alloyed mixtures with the corresponding compositions could be considered a result of a lack of compositional homogeneity over microscopic distances; however, the production of single-phase Co3Ti in mixtures having a suitable composition would seem to indicate that other factors are at work in addition to simple compositional heterogeneity.
Shiga: in Processing and Properties of Nanocrystalline Materials, pp.319, eds.
Weertman: in Processing and Properties of Structural Nanomaterials, pp.69, eds.
Online since: January 2013
Authors: Fu Xiang Wei, Gen Xi Yu, Zhi Ling Wang
Effects of compound additives on properties of cermet inert anodes Fu-xiang Wei 1, a, Gen-xi Yu1 and Zhi-ling Wang2 1 School of Materials Science and Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221116, China 2Jiangsu province xuzhou technician institute, Xuzhou, Jiangsu 221116, China aweifuxiang2001@163.com Keywords: Cermet, Inert Anode, Two-step Sintering, Compound Additive.
This compound offers a good combination of physical and chemical properties such as high melting-point, good resistance to chemical attack, high thermal stability, and consequently it is the preferred material as ceramics inert anode.
Sintering additive is an effective method to increase cermet mechanical properties and electric conductivity.
Although is approximately a constant within a certain range, it can be affected by several factors: the carrier concentration in the material structure, the quantity of charge, the average transition distance, the transition frequency, and the environment temperature T.
Showing 13961 to 13970 of 26166 items