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Online since: August 2012
Authors: Carlos Nelson Elias, C. Santos, Andréa Matos Melo, Sérgio Neves Monteiro
It was determined the mechanical and physics properties of the two types of blocks of zirconium stabilized with ytria.
The blocks have been sinterized at 1530 oC and their mechanical and physics properties were measured.
It was not observed an important difference among the microstructures and mechanical properties of the analyzed zirconium blocks.
The Weibull parameters “m” and so were determined using correction factors according to the number of samples used (DIN-51-110).
Mechanical properties evaluations were conducted using similar methods to allow comparison of the blocks properties.
Online since: July 2017
Authors: A. Saravana Kumar, L. Rajeshkumar, P. Maivizhi Selvi
All these factors results in properties like high tensile strength, strain compatibility, better stress transfer and high impact strength.
Table 2 indicates the experimental factors and their levels.
Mechanical properties of the composite were determined as per ASTM standards and the results were investigated.
It could also be observed that better mechanical properties were due to good fiber-matrix interfacial bonding.
A,A study of mechanical properties of short natural fiber reinforced composites, Composites part B. 36, (2005) 597-608
Online since: September 2013
Authors: Wei Guo, Meng Yang, Jing Wu Zhang, Hui Li
The mechanical properties have been measured by hardness testing and scanning electron microscopy (SEM) and the microstructures have been characterized by optical microscopy (OM), together with transmission electron microscopy (TEM).
Introduction Al-Zn-Mg-Cu alloys have been widely applied to the aircraft and aerospace industry due to their excellent combined properties, such as light weight, high strength, and good workability [1].
Proper control of the size, density and distribution of these precipitates is crucial in order to obtain optimum properties of the alloys.
Factors affecting the precipitation processes include chemical composition of alloying elements [9,10], aging temperature and time [7,11], solution treatment condition [12] and quenching state (i. e. vacancy supersaturation) [13-15].
Summary A new stress aging method was performed to improve the mechanical properties of a Al-Zn-Mg-Cu alloy.
Online since: September 2024
Authors: Houssame Limami, Ghizlane El Hajoui, Imad Manssouri, Tajeddine Manssouri, Hassane Sahbi
The researchers noted that differences in time lag were affected by factors such as heat capacity, solar irradiation, and ambient temperature.
Lu et al. [12] investigated the impact of various factors on wall thermal performance indicators, the decrement factor, and phase shift.
Wastewater treatment plant sludge properties [17].
Time lag and decrement factor were analyzed through simulation to understand the delay in heat penetration through the specimens, affecting the internal comfort temperature as a result.
Accessed 30 Jun 2023 [19] Rabie GM, El-Halim HA, Rozaik EH (2019) Influence of using dry and wet wastewater sludge in concrete mix on its physical and mechanical properties.
Online since: December 2014
Authors: Lin Ping Yu, Zhi Yun Wang, Lu Shen, Xiao Long Ma
However, the affecting factors, different means of simulation and complex mechanism of contact between the foundation bucket and foundation soil leads to its associated stability simulation test data relative dispersion ,so it has not come to a united analysis and summary.
Meanwhile the economically developed regions of the Bohai Bay, the Pearl River estuary, Yangtze River estuary located in the vast deposit soft soil, which not only poor physical and mechanical properties, but the carrying capacity is very low.
The stability of bucket foundation breakwater is sustained by the foundation bucket penetrated into the soft soil. so the soil pressure on the foundation bucket is the main factor affecting the stability of the breakwater structure.
In the simulation of foundation soil, although soil layers were given different material properties by the authors , soil is the porous solid, in the paper the authors did not consider the presence of pores in the soil, so there is no consideration of pore water pressure of the soil .
Meanwhile simulation test is not considered anisotropic soil, which also is an important factor to affect the test results.
Online since: May 2012
Authors: Qing He Gao, Yi Can Wang, Yu Mei Jiang
The process of scaling is mainly controlled by the composition and properties of produced fluid.
In this paper, we analyzed the relationship between scaling and the properties of produced fluid and established the warning mechanism for this problem.
This was also one of the key factors that caused the reduction of reservoir permeability.
Statistically analyzing the properties of produced liquid and scale composition in mechanical production wells in experimental regions.
The critical factors influncing the mechanical production well scaling are pH value, basicity, scaling cations and silicon content.
Online since: September 2014
Authors: D. Farrugia, Andrew Richardson, Yong Jun Lan
This paper primarily focuses on analytical descaling concepts for both mechanical and thermal outputs for flat jet nozzle and process factors.
It can be observed that geometrically the standoff decreases at left of nozzle (assuming positive offset and rake) and increases at right end side from nozzle orifice centre (or COG of imprint) with ever increasing rake and offset (or twist) angle affecting also the spray width.
Properties of scale are extracted from author [4] and [14].
Future applications of the models will include optimisation of descaling strategy and throughput for a range of products together with intrinsic coupling of descaling process parameters with scale removal based on oxide scale properties inc. interface.
[5] P.H Bolt, Understanding the properties of Oxide Scales on Hot Rolled Steel Strip, Steel Research International, 75 (6) (2004)
Online since: March 2008
Authors: Shi Chun Yang, Wen Hui Li, Sheng Qiang Yang
By analyzing effect factors and their rules, theoretic basis is settled for experimental research and industrial application.
The stress status, micro-rigidity, surface layer structure are improved by elastic and plastic deformation, so the physical-mechanical properties are improved.
n α M N L θ θ y x O1 O M Fig.3 Model diagram of motion analysis on the wheel hub surface For the characteristics of planet motion, it is: ( ) αθ θ += Nn /1 (1) So the equation of motion locus to M is: ( )[ ] ( )[ ]θαθ θ αθ Nn rLy Nn rLx /1sinsin /1coscos +++= +++= (2) As θ is equal to 2πNt,the velocity component in XOY is: ( ) ( )[ ] ( ) ( )[ ]NtNn NnNrNtNLy NtNn NnNrNtNLx π α πππ π α πππ 2/1cos/12)2cos(2 2/1sin/12)2sin(2 ++ ++ = ++ +− −= & & (3) With the composition formula of velocity, the velocity of M is: ( ) 2/1 )2cos()/1(2)/1( 2 2 22 nt NnLrNnrLNv πα π + ++++= (4) Analysis of Main Factors From above equations, main factors affecting finishing effects are N, n/N, L, α, r.
By analyzing effect factors and their rules, theoretic basis is settled for experimental research and industrial application.
Yang: China Mechanical Engineering Vol.10 (1999), pp.626-629 (In Chinese) [4] S.Q.
Online since: December 2011
Authors: Ezahtul Shahreen Ab Wahab, Siti Fatimah Che Osmi
The natural fiber is the fibers that have similar properties and function as the synthetic fiber.
Results and Discussion A comparison is made between all specimens with control specimen to show a result on mechanical properties of concrete.
This phenomenon is cause by interruption of concrete properties by additional weight of rachis.
The weight of rachis was influenced the concrete strength properties and also have possibility in interfering with other basic properties of the concrete.
Pearson Prentice Hall. (2009) [2] Shah, S.P. and Rangan in: Fiber Reinforced Concrete Properties.
Online since: August 2013
Authors: Sontaya Limmatvapirat, Chutima Limmatvapirat, Noppadol Chongcherdsak, Direk Aekthammarat
The aim of this research was to elucidate the factors affecting drug release and buoyancy properties of effervescent shellac based matrix tablet.
The factors affecting floating and drug release, including amount of SHL and gas forming agent were investigated.
Due to the outstanding of SHL properties including moisture barrier and gastric protection[4], SHL was used as a film former for enteric coating and matrix forming agent.
In this study, effervescent gastric floating dosage form containing SHL as a matrix forming agent was fabricated and its physicochemical properties were characterized.
Puttipipatkhachorn, Modification of physicochemical and mechanical properties of shellac by partial hydrolysis, Int.
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