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Online since: August 2018
Authors: N.A. Hamiruddin, R. Abd Razak, K. Muhamad, M.Z.A. Mohd Zahid, C.N.S. Che Ab Aziz
Moreover, the compressive strength of 100 MPa at 28 days can be accomplished on investigating self-compacting properties of UHPC [3].
The compressive strength and Ultrasonic Pulse Velocity (UPV) of concrete depends on various factors such as cement-mortar paste content, water-cement ratio and admixtures.
UHPC with excellent mechanical properties and durability can be provided by increasing the homogeneity and density of packing [8].
From Table 2, the usage of HRWR is vary depends on the particles size and HRWR dosage due to the HRWR properties [12].
Repette:Measuring, Monitoring and Modeling Concrete Properties (Springer Publications, Netherlands 2006)
Online since: July 2013
Authors: Zhi Bo Feng, Guo Zheng Zou, Jia Bin Cai, Gang Chen
Know then, carbonization treatment is better in terms of the affect on improving dimensional stability of wood.
However, some negative factors of poplar (soft material quality, low density, tending to drying shrinkage, etc.) restrict its further use.
Nowadays, how to use the modification to improve wood dimensional stability and mechanical property so as to improve the quality of poplar wood, enlarge its application scope, is one of the hot topics researched by domestic and overseas scholars.
Conclusion ( 1 ) After carbonization treatment, the wood shrinkage rate reduces by 3.01% to 8.47%, swelling rate by 12.01% to 43.75%, that is to say, carbonization has little affect on improving the character of shrinkage of wood and improves the character of swelling obviously.
Online since: September 2013
Authors: Kalyan Kumar Ray, Ayan Ray, Soumitra Tarafder, Krishna Dutta, Himadri Roy
The motivation for the initial development of stainless steel was to develop good cutlery or medical instruments, but currently it is a candidate for applications in chemical, process and power generation industries for their excellent combination of mechanical properties in ambient and corrosive environments, both in monotonic and cyclic loading conditions, and excellent oxidation and corrosion resistance properties [1-8].
The integrity of critical structural components, specifically for applications in the power generation sector, warrants safe limits of mechanical properties related to deformation, fracture and fatigue characteristics.
However the exercise here is limited to examination of the concerned mechanical properties primarily at ambient temperature and in non-aggressive environments.
Talonen, Effect of strain-induced -martensite transformation on mechanical properties of metastable austenitic stainless steels, Doctoral Dissertation, Helsinki University of Technology, Finland (2007) [17] J.W.
Lin, Impact properties and microstructure evolution of 304L stainless steel, Mater.
Online since: May 2007
Authors: Ahmed Moosa, Jalil Karim Ahmed, Ali Hoobi
Corrosion Properties of Inconel Alloy 600 Coated by Simultaneous Aluminizing-Chromizing Process.
However, in sulfur-containing atmospheres, heterogeneous scales are formed which have poor protective properties.
Hot Corrosion of Uncoated IN 600 in NaCl/ Na2SO4 MixtureFor uncoated IN 600 alloy deposited with (50 wt% Na2SO4 + 50 wt. % NaCl) and exposed to cyclic oxidation test at 900 o C for 105 hrs at 15 hrs cycles, the scales may initially be protective, but become non-protective due to a variety of factors.
One of these factors is the mechanical failure i.e. the inability of the scale, often at a critical thickness, to relieve the stresses produced in the growing scale [10].
Both coated systems exhibits thick porous scale at its outer surface and underneath this scale had been affected by the hot corrosion attack.
Online since: August 2023
Authors: Mohd Iqbal, Teuku Firsa, Indera Sakti Nasution, Zulfadhli Zulfadhli, Yulfian Aminanda, Dadang Furqon Erawan, Arief Pradana, Nazaruddin Nazaruddin
A comprehensive review on mechanical properties of pultruded FRP composites subjected to long-term environmental effects.
Influence of the fiber/matrix strength on the mechanical properties of a glass fiber/thermoplastic-matrix plain weave fabric composite.
Mechanical properties of glass fiber reinforced polyester resin for use as the wall of the Acehnese boat ‘Thep-Thep’.
The effect of hybridisation on mechanical properties and water absorption behaviour of woven jute/ramie reinforced epoxy composites.
Mechanical properties evaluation of sisal fibre reinforced polymer composites: A review.
Online since: January 2018
Authors: Surasak Suranuntchai, Sethapong Wangchaichune
The results in hot forging analysis such as effective stress, effective strain rate, material flow and temperature distribution are used in the estimation of final product properties.
In general, the design of forging process is principally dependent on material properties, geometric shape, dimension accuracy, surface quality and equipment.
The hot compression tests were performed on a thermo-mechanical simulator for four different temperatures (850, 950, 1050 and 1150˚C) and four different strain rates (0.01, 0.1, 1.0 and 10.0 s-1).
The first factor (1.26) has shown that the initial billet could be fulfilled in the die with scrap more than other factors such as; 1.24, 1.22, 1.20, and 1.18 respectively until the factor 1.16 that could not be expanded in full die.
Also, the maximum experimental load was higher than the maximum simulation load about 11 %, which affected the reduction of stresses on dies.
Online since: April 2015
Authors: Fawad Tariq, Madni Shifa, Mateen Tariq, S. Kazim Hasan, Rasheed Ahmed Baloch
Moreover, their properties can be tailored according to the specific requirement.
Alternatively, electrically conducting polymers are available but they are quite expensive, difficult to process and have relatively poor mechanical properties [2].
Carbon fibers not only contribute towards strength but also show reflective properties to incoming EM waves.
Bisphenol-A based thermoset epoxy resin containing a reactive diluent (Araldite LY 564) was selected as a matrix because of its low viscosity, excellent mechanical and thermal properties.
This has resulted in failure to efficiently translate the nanoscopic properties of nanotubes into final nanocomposite.
Online since: January 2012
Authors: Li Hui Cao, Yan Yu, Yu Zhang
Introduction Due to the properties of low steel content, unique and beautiful shape, and short construction period, large-span space, steel tube structure has been widely used in convention centers, stadiums, airports and other large civilian landmarks.
Because of its unique properties, in foreign, it has been widely used in large-span steel truss structure in important joints.
It can apply to many conditions like in complex structure and boundary condition, for different material properties, for linear or nonlinear problems, for various load cases and so on.
Its mechanical properties are very similar to K-node in plane.
The parameters which affect the K-node plane also affect the bearing capacity of these two space nodes.
Online since: April 2015
Authors: A. El Hami, Norelislam El Hami, Mhamed Itmi
In fact, there are always differences between what can be calculated and what can be measured mainly due to the uncertainties in geometry, material properties, boundary conditions and loads.
In order to account for that, design based on purely determining analyses has been replaced by stochastic and reliability analyses which consider the uncertainties affecting the design parameters [1], [2], [3], [4], [5].
In the last ten years there has been an increasing trend for analyzing structures using probabilistic information of loads, geometry, material properties, and boundary conditions.
They involve random properties in load and geometric properties in rectangular plates.
The mechanical properties of the material: E= 1.23.1011 N/m2, r=8250 kg/m3 and n=0.3.
Online since: December 2011
Authors: Ping Bo Wu, Yao Hui Lu, Jing Zeng, Xing Wen Wu
School of Mechanical Engineering ,Southwest Jiaotong University, Chengdu ,610031, China; 2.
Introduction The welding deformation is the most important factors on welding quality.
However, due to numerous factors involved in welding process, it isn’t applicable to predict welding deformation just depending on experiments data, especially for the large structure.
The indirect method of thermo-mechanical coupling was taken to simulate welding process in this paper.
The difference was that inherent strains method was utilized to calculate the deformation of T-joint which just needs one time linear elastic plastic analysis.The longitudinal inherent strains and transverse inherent strains are the main factors determining welding deformation.
Showing 22361 to 22370 of 26166 items