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Online since: August 2007
Authors: Janice M. Dulieu-Barton, Nuttaphon Sathon
Therefore three types of materials have been chosen based on the thermal properties: aluminium alloy, mild steel and Polymethyl methacrylate (PMMA).
Details of the specimen dimensions are given in Table 1, with typical material properties given in Table 2.
z x y Figure 1 Test specimen Table 1 Specimen dimensions Table 2 Mechanical and Thermal properties of the materials used in this study For each specimen thermoelastic data was recorded at the following frequencies: 2, 3, 5, 10, 20, 30 and 40 Hz.
∆T was calculated using equation (1) with the material properties given in Table 2 and is also given in Table 3.
The thermoelastic response from the TSA was normalised and plotted as stress factors (see above) in Figure 2.
Online since: August 2017
Authors: Panpailin Seeharaj, Kittisak Choojun, Naratip Vittayakorn, Patchara Pasupong
The magnetic property of nanocrystalline CoFe2O4 is found to depend on many factors including crystallite size, morphology, chemical composition and cation distribution [4].
Song, Synthesis and magnetic properties of CoFe2O4 ferrite nanoparticles, J.
Ceeylan, Synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles prepared by wet chemical route, J.
Kim, Growth of ultra-fine cobalt ferrite particles by a sol–gel method and their magnetic properties, J.
Li, Low-temperature auto-combustion synthesis and magnetic properties of cobalt ferrite nanopowder, Mater.
Online since: April 2008
Authors: Guo Dong Zhang, Chang Yu Zhou
Because the texture and mechanical property of dissimilar steel welded joint is non-uniform, the joint is the most unsubstantial segment in welded units.
In addition, the mechanical property of steel and copper welded joint has also been researched [8-11].
Therefore, the refined mesh must be used in the region of heat affect zone and near welding line.
That is because the difference of linear expansion factor and the thermal conduction coefficient is between 20 steel and Cr5Mo steel.
Lu, et al: China Mechanical Engineering Vol. 11 (2000), p. 732-734
Online since: June 2017
Authors: Wen Zhi Fu, Ming Zhe Li, Jun Chen, Yu Wang, Yu Shan Deng
Plates of 08AL and 2024-O were selected, with mechanical properties showed in Table 1.
Polyurethane (Tab. 1) was chosen as the elastic cushion and with its mechanical property simplified to a linear elastic model.
Table 1 Main mechanical properties of materials.
Springback is almost unavoidable in sheet metal forming and is the main factor in reducing the forming precision.
And it is directly affected by the stress concentration and nonuniform internal stress distribution.
Online since: January 2016
Authors: Daniel Makovička, Daniel Makovička
Its intensity and history are determined by the chemical properties of the explosive and its reaction with ambient environment.
c) The load affects the building structure (wall, floor, windows, etc.) continuously and regularly (in case of standard-size structures of residential or industrial buildings the local effect of concentrated load need not be considered).
The recommended static safety factor is 2.
In case of more complex accidents it is advisable to verify the physico-mechanical properties of glass by laboratory tests of samples.
Makovička, Jr.: Blast load of building structure, Mechanical Engineering, No 1, 21 (2014), pp. 11-18.
Online since: June 2025
Authors: Lahcen Nkhaili, Abdelkader El Kissani, Abdelkader Outzourhit, Said Elmassi, Abdelfattah Narjis, Abdelaziz Tchenka, Mouhcine Ourbaa, Hamza Badr, Jalila Hanyny, Layla El Gaini, Nasser S. Awwad
A higher oxygen content can create a more reactive deposition environment, influencing not only crystal density but also other properties such as crystallite size, surface roughness, and even the optical and electronic properties of the [17].
This may be attributed to the high oxygen pressure affecting the structural properties at the surface of the film during deposition, leading to a reduction in crystallite size [17].
In addition, several factors are involved in the transmission of the films, such as grain size, structural homogeneity, crystallinity level and surface roughness [25].
Furthermore, the increase in the O/Sn ratio, observed in the EDX spectra, shows that controlling the oxygen concentration allows for the adjustment of the material’s properties, which can directly affect its efficiency as a photocatalyst.
Brytan, “Structure and Selected Properties of SnO2 Thin Films,” 2024
Online since: October 2012
Authors: Ming Hui Liu
But study and application on cold recycling technology is still in its youth, properties and design method indexes on cold recycled mixture is not yet uniform.
Fig.1 Recycled layer of post-treatment (a)paving three layer asphalt on recycled layer;(b)paving two layer asphalt on recycled layer;(c)paving one layer asphalt on recycled layer;(d)paving emulsified bitumen slurry seal on reclaiming layer on recycled layer;(e)surface treatment on recycled layer 1.3 Additives and new aggregates of cold recycled mixture[2] 1.3.1 Additives types Additives are often used in cold in-place recycling construction in order to improve cold recycled mixture mechanical properties.
The main research contents include four parts as follows. 1) Old asphalt pavement and traffic volume investigation Present pavement investigation data such as pavement and sub-grade structure, material, environmental factors and using condition etc can be obtained.
Design method mainly includes as follows: CBR and DCP method combined with other design method; deflection design method when firmly believing pavement destruction to be caused by roadbed defect; mechanical design method through computer program to imitate actual pavement is more reliable but complex compared with the design method based on experience.
Gradation design of cold recycled mixture still lacks experience; QC/QA on Cold in-place recycling is less effective than plant recycling; Cold in-place recycling construction is easily affected by climate conditions.
Online since: August 2021
Authors: Gintaris Kaklauskas, Domas Valiukas, Ronaldas Jakubovskis
The so-called bond is the main factor governing crack propagation, crack width, tension stiffening, and other effects.
Although the bond mechanisms were investigated thoroughly for some time, different results obtained by independent scientists suggest that some properties must be investigated and quantified since the fundamental nature of the bonding phenomenon is very complex [1,2].
It is known that the contact area between concrete and reinforcement is subjected to various mechanical effects, including microcrack formation, local bearing, and shearing of concrete in the face of reinforcement ribs.
This also affects the formation of cracks since the transfer length of bond stresses increases.
In this approach, rib geometry is the main factor governing the callibration of FE analysis output..
Online since: May 2012
Authors: Han Wu Liu, Wen Jing Sun, Shuai Gao
The high-performance middle-high temperature flat solar selective absorption coating with excellent optical properties (absorption ratio was greater than 0.92 and the launch ratio was less than 0.09), strong oxidation resistance and weather resistance was prepared by the use of magnetron sputtering technique.
By controlling the process parameters and the experimental tests of the optical properties, a good performance SiO2 minus reflection film was obtained, and then combined it with SS-N-O to form a relatively inexpensive gradient coating which could meet the relevant performance requirements.
The function of the minus reflection film and the analysis of the influencing factors The middle-high temperature solar spectrum selective absorption coating has five types: intrinsic absorption film, optical interference film, multilayer gradient film, cermets film and optical trap film.
By the reasonable design of the structure of the minus reflection film, the transmission light can make close to 100%. [3] The main parameters which affect the minus reflection effects usually include the optical constants (refractive index) of the minus reflection film itself, the thickness and the refractive index of the corresponding substrate.
Conclusions The following conclusions can be obtained by the analysis of the test parameters and the obtained reflectance curve spectrum: 1) The adhesion and the optical properties of the SiO2 minus reflection film in the SS-N-O absorption coating are well.
Online since: October 2017
Authors: Ipsita A. Banerjee, Alexandra M. Brown, Harrison T. Pajovich, Andrew M. Smith, Sara K. Hurley, Jessica R. Dorilio, Nicole M. Cutrone
Mechanical properties and surface roughness were studied and the scaffolds displayed a Young’s Modulus of 169 MP and an average roughness of 72 nm respectively.
To determine the mechanical properties of the CGA-AMP-Collagen-AGG scaffold, we utilized peak force microscopy using AFM.
For example, oral biofilm formation has been found to be a challenge affecting the RANKL-OPG system in periodontal ligaments [109].
Carter, Mechanical properties of the human achilles tendon, Clin.
Vanderby, Quantification of collagen organization and extracellular matrix factors within the healing ligament.
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