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Online since: February 2021
Authors: Oluwarotimi Michael Olofinnade, Anthony N. Ede, Praise O. Gideon, Akpabot Ifiok Akpabot, Solomon O. Oyebisi, David O. Nduka
Review of the Properties of Lightweight Aggregate Concrete Produced from Recycled Plastic Waste and Periwinkle Shells Anthony N.
Jaivignesh and Sofi [10] carried a study on the mechanical properties of concrete using plastic waste as an aggregate and found out that the reduction of the compressive strength is as a result of the decrease in adhesive strength between the waste plastic and the cement paste.
Properties of concrete containing different type of waste materials as aggregate replacement exposed to elevated temperature – A review Properties of concrete containing different type of waste materials as aggregate replacement exposed to elevated temper, IOP Conference Series: Earth and Environmental Science, 140, (2018) 215–221
Influence of bamboo fiber and limestone powder on the properties of self-compacting concrete, Cogent Engineering, 7(1), 1721410 (2020)
Sofi, Study on Mechanical Properties of Concrete Using Plastic Waste as an Aggregate.
Online since: November 2017
Authors: Aniekan E. Ikpe, Ikechukwu Owunna
Depending on the integrity of its design and material properties, the coil spring can return to their original shape and size when the force is released [4].
NS ≥1.2 Where NS is given as the factor of safety at closure.
High corrosion resistance Material Properties Table 2 shows selected material properties for high carbon steel, stainless steel and Chrome vanadium which are the three major materials analysed in this study.
The loading conditions discussed in this study are not the only factors that affects the performance of a typical helical compression coil spring but other factors such as inherent defect in the raw material (prior to manufacture), improper heat treatment, decarburization, inclusion, surface imperfections due to poor shot peening can also constitute to spring failure.
[15] Acxess Spring, Properties of Common Spring Materials for Spring Wire.
Online since: August 2016
Authors: Ernesto Chicardi, Paloma Trueba, Juan José Pavón, Joaquín Cobos, Yadir Torres, José Antonio Rodríguez-Ortiz
In this context, here we initially focus on phenomenological relationships between bone structure, its mechanical properties and most frequent damage mode, to achieve optimal properties of engineering materials for successful clinical bone replacement.
Microstructural parameters (density and porosity) and mechanical properties (Dynamic Young´s modulus and Yield Strength) for CP Ti cylinders with radial gradient porosity.
In regards to mechanical properties, it must be noticed that Vickers hardness decreased when porosity was increased (from core to outer shell).
Microstructural parameters and mechanical properties for CeO2 pellets with radial graded porosity.
Katsura, Mechanical properties of (U,Ce)O-2, Journal of Alloys and Compounds 271 (1998) 697-701
Online since: August 2011
Authors: David Nowell, Daniel M. Mulvihill, Mehmet E. Kartal, Dawid A. Hills
If these interface properties can be determined, it should then be possible to significantly enhance current models of the vibration of engineering assemblies.
If these interface properties can be determined and their variation with load, frequency etc. understood, it should be possible to significantly enhance current models of the vibration of engineering assemblies [8].
Repeatability of measurements is an important factor when characterising the properties of frictional joints, and it is helpful to determine how the results might change if a joint is reassembled (with new material and new surfaces ground to the same specification) and tested with the same experimental parameters (i.e. contact pressure, number of cycles, displacement amplitude, geometry etc.).
International Journal of Mechanical Sciences, vol. 50 (10-11), pp. 1519-1525
Determination of the Frictional Properties of Titanium and Nickel Alloys Using the Digital Image Correlation Method.
Online since: September 2005
Authors: B. Wang, Guo Xing Lu
Properties of the dynamic strength of the materials can then be derived from the stress strain curves under different strain rate loadings.
Conclusions Compression tests have been performed on two different materials of distinctively different properties.
ASM Handbook, Mechanical Testing, Vol. 8 (1985). 3.
Tweeddale, The Mechanical Properties of Metals.
Burgan, Elevated temperature and high strain rate properties of offshore steels, Health and Safety Executive (UK 2001). 8.
Online since: April 2011
Authors: Chang Pin Chou, Cheng Hsien Kuo, Kuang Hung Tseng
Effect of activated TIG flux on performance of dissimilar welds between mild steel and stainless steel Cheng-Hsien Kuo1, Kuang-Hung Tseng2* and Chang-Pin Chou1 1Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan 2Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan * tkh@mail.npust.edu.tw (corresponding author) Keywords: Oxide flux, TIG process, Dissimilar joint Abstract.
This approach is most often used where a transition in mechanical properties and/or performance in service are required.
According to work by Heiple and Roper [9], the direction of fluid flow in the molten pool can affect the weld geometry.
The temperature coefficient of surface tension is a factor in driving the direction of fluid flow in the molten pool.
The degree of angular distortion depends on several factors such as the relative weld depth and the shape and dimensions of weld metal [10,11].
Online since: November 2015
Authors: Andrzej Buchacz, Andrzej Baier, Michał Sobek, Łukasz Grabowski, Michał Majzner
High mechanical strength and weather conditions resistance expands their range of applications.
However composite must be properly prepared in order to gain desired properties.
The selection of laminate epoxy matrix - carbon is a very important factor.
It directly affects the strength of the composite.
The choice of resin used in laminate production depends on many factors.
Online since: February 2007
Authors: Antal Huba, László Valenta, István Muka
New perspectives have opened for the manufacturing of products in precision engineering and in medical instrumentation not only by the special mechanical, optical, biochemical etc. properties but also the electrical ones of carbon black dotted silicone rubber.
This modulus is defined as 22 EEE ''+'=∗ further we obtain the material loss factor with EE '''=δtan .
The electric properties of the carbon dotted polymers are determined by the type, amount and the size of particles [6].
However the percentage of carbon strongly influences the mechanical properties of the material.
This pulling force can be affected by the pressure.
Online since: June 2011
Authors: Matthieu Dubois, Vincent Klosek, Marie Hélène Mathon, Alain Lodini, Gilles Andre
The influence of these mechanical treatments on the transition temperatures and the hysteresis evolution was also analysed by following the integrated intensity of the {220} reflection of the austenitic phase.
This property is due to the austenite-martensite phase transformation which can be induced thermally by a cooling or mechanically by applying a load.
For these alloys, transformation temperatures are of importance factor for the behaviour of the material and can be affected by several parameters (microstructural defects, grain size or residual stresses) [2].
In this study we propose to investigate on a copper based alloy the influence of the mechanical deformation by cold and hot rolling on the microstructure evolution by following the texture variation with the rate of deformation and how this modifies the characteristic transition temperatures.
This mechanical treatment thus introduces metastable residual martensite due to inter-and intragranular stresses generated by deformation incompatibilities between grains with different orientations and by transformation strains.
Online since: November 2005
Authors: W.M. Lima, W.R. Weinand, O.A.A. dos Santos, A. Paesano, F.H.M. Ortega
This compound has been obtained by a number of preparation routines, usually by chemical synthesis, mechanical action from precursor compounds or by calcinations of several types of bones [6].
The method is quite simple, feasible to large scale production, and the raw material is abundant, factors that make the transformation process attractive from the industrial point of view.
It can be observed that the most probable particle diameter is about 1.0µm, which is certainly further decreased by mechanical milling.
Nevertheless, studies have shown that the calcination temperature can affect crystallinity, increasing the lattice parameter [10, 17]. 10 20 30 40 50 60 70 (12h) (10h) (8h) (6h) (4h) 2θθθθ (Degrees) Intensity (Arbitrary Units) 20 30 40 50 60 0 200 400 600 800 1000 1200 ♦(321) ♦(112) ♦(202) ♦(501) ♦(313) ♦(322) ♦(203) ♦(113) ♦(131) ♦(212) ♦(301) ♦(210) ♦(102) ♦(111) ♦(200) ♦(312) ♦(222) ♦(213) ♦(402) ♦(410) ♦(310) ♦(004) ♦(002) ♦(300) ♦(211) 2θθθθ (Degrees) Intensity (Arbitrary Units) ♦ PURE HA a) b) Fig. 3. a) X-ray diffraction patterns for the materials calcined at 4, 6, 7, 10 and 12 hours and milled for 4 hours; b) Material calcined at 12 hours and milled for 4 hours.
"Optical properties of hydroxyapatite obtained by mechanical alloying", J. of Physics and Chemistry of Solids 63, 1745-1757, (2002).
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