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Online since: November 2010
Authors: Feodor M. Borodich
However, it does not have a clear mechanical meaning and, therefore it cannot be used as a single parameter for characterising mechanical properties of materials.
Therefore, it is supposed that not only the mechanical properties of the material are known but also the shape of the punch and the external force parameter P of the problem are given.
Contact problems and evaluation of material properties.
The author believes that both factors may influence the observed changes of measured values of hardness depending on the depth of indentation.
Although these reviews were published [122, 123], the author believes that this paper gives further information concerning the methods for extracting mechanical properties of materials from load-displacement curves.
Online since: December 2024
Authors: O. Bavani, P. Harish, S. Lakshmi Narasimha, P. Akhila Devi, T.S. Girish Kumar, K. Mani Bharath Achari
Gupta, A., & Singh, R.[1] Focused on the mechanical properties of the stabilized soil, particularly in terms of shear strength and compressive strength.
Their research focused on the mechanical properties of the stabilized soil, particularly in terms of shear strength and compressive strength.
Specific Gravity Test by Pycnometer 3.3.1 Moisture Content Test The moisture content of the soil samples was determined by the oven-drying method according to[12] IS:2720 Part 2 - 1973.The moisture content of soil is a crucial parameter that affects its engineering properties.
Results and Discussions 4.1 Testing of soil properties without stabilizers Before the addition of Fly Ash, GGBS, and Stone Dust stabilizers, the soil sample underwent various tests to determine its inherent properties.
This analysis is crucial for understanding the soil's grading and texture, essential factors in assessing its suitability for engineering and construction applications.
Online since: April 2022
Authors: Boualem Khemissat, M.N. Bouaziz, Amina Manel Bouaziz
Although many factors such convection, Brownian diffusion, turbulence, sedimentation, inertial effect, electrophoresis, surface geometry and thermophoresis influence the particle deposition, this last effect is dominant in some conditions of engineering interest.
Another important example is fouling of gas turbine blades and thermophoretic deposition of radioactive particles which is considered to be one of the important factors causing accidents in nuclear reactors.
As seen, a same temperature profile is presented for any value of fw, explained by injection/suction is a mechanical than energetic process.
MHD Mixed Convection Heat Transfer in a Vertical Channel with Temperature-Dependent Transport Properties
Buongiorno model for MHD nanofluid flow between rotating parallel plates in the presence of variable liquid properties
Online since: March 2007
Authors: Fumiyoshi Minami, Mitsuru Ohata, Anna Ui
It was found that the strength heterogeneity between crystal grains with different phases could affect ductile cracking behavior through difference in stress/strain localization behaviors.
Table 1 shows the chemical composition of the steel, and Table 2 lists its mechanical properties.
Chemical composition (%) C Si Mn P S Cu Ni Cr Mo V B Ceq 0.17 0.33 1.37 0.018 0.018 0.01 0.07 0.06 0.008 0.002 0.0001 0.43 Ceq=C+Mn/6+Si/24+Ni/40+Cr/5+Mo/4+V/14 Mechanical properties El. (%) 31 HV Ferrite Pearlite 198 276 σY (MPa) σT (MPa) YR (%) εT (%) 344 540 64 17.6 σY : Lower yield stress, σT : Tensile strength, YR : σY /σT, εT : Uniform elongation, El. : Elongation (G.L.=36mm, Dia.=6mm) , HV : Average Vickers hardness (Load : 25g) Fig. 1 Microstructures of SM490YB (Ferrite-Pearlite) steel used.
Table 2 Mechanical properties of steel used.
The proposed method may also be useful in studying the effects of morphology of heterogeneous microstructure as well as stress triaxiality on the ductile cracking properties of the two-phase steels.
Online since: October 2024
Authors: Faiza Afrin Oktalitha Khunaifi, Gemilang Idea Mida Khoirunisa, Michael Natan Syalom, Pramudita Sidik Hasibuan, Reykhan Lucy Bagaskara, Silviana Silviana
Its effectiveness is influenced by soil type, climate, and other environmental factors, requiring adjustment to land conditions, which can incur additional costs [49].
Silica has strong mechanical properties, relatively inert chemical compositions, adjustable pore sizes, and modifiable surface characteristics, making it suitable for various applications [48].
Residual DTAB left in the final product can lead to contamination and affect the surface properties and reactivity of mesoporous silica materials [85].
Furthermore, the material exhibits robust mechanical properties, a large specific surface area, low column pressure, and high resistance to radiation, rendering it suitable for removing cesium ions from seawater [101].
Ran, “Adsorption materials for volatile organic compounds (VOCs) and the key factors for VOCs adsorption process: A review,” Sep Purif Technol, vol. 235, no.
Online since: February 2015
Authors: Sharifah Bee Abd Hamid, Yun Tan Xiao, Wei Lai Chin
Nanocellulose (NCC), also known as nanocrystalline cellulose is the cellulose with diameter in 1-100nm range and tens to hundreds of nanometers in length with relatively high aspect ratio (~70) and highly crystalline structure properties [3].
NCC has became increasingly popular for the past decade because of its unique properties such as low density, high tensile strength (~300GPa), high Young’s modulus (~150GPa), modifiable surface properties, biodegradability, biocompatible as well as great availability from renewable resources [4-7].
Thus, FTIR spectra confirmed that heat treatment with ionic liquid to the cellulose did not affect or change the chemical compositions of the cellulose significantly [6].
Hsieh, Preparation and properties of cellulose nanocrystals: Rods, spheres, and network, Carbohydrate Polymers. 82 (2010) 329-336
Voronova, et al., The effect of drying technique of nanocellulose dispersions on properties of dried materials, Materials letters. 68 (2012) 164-167
Online since: February 2014
Authors: Maykel Manawan, Bambang Soegijono, Azwar Manaf, Asep Yudi
The magnetic properties were measured by a Permagraph-L magnetometer with external field up to 2000 kA/m.
It clearly be seen that the microstructure is affected by the substitution.
SEM images of BaFe12−2xTixMnxO19: (a) x = 0.0 and (b) x = 0.8 Magnetic Properties The effect of Ti2+–Mn4+ content on magnetic properties for all examined samples is shown in Fig. 3.
Magnetic properties of BaFe(12−2x)TixMnxO19: (a) M-H loops, (b) Ms, Mr and Hci vs. composition (x).
Table 2 represents the variation of magnetic properties with substitution.
Online since: February 2013
Authors: Wen Yuan Deng
For the applications of optical coatings in the DUV, especially in the optical lithography, the highest requirement for the performance is pushing the research of nearly all the factors to a new development stage [2, 3].
In DUV or vacuum ultraviolet (VUV), absorption of the ambient appeared, which will affect the measurement accuracy.
For the LaF3 films fabricated by thermal evaporation, the inhomogeneity was one of the main factors that block the optical characterization and the application of it [13].
Optical, structural and mechanical properties of lanthanide trifluoride thin film materials for use in the DUV-spectral region.
Microstructure related properties of lanthanum fluoride films deposited by molybdenum boat evaporation at 193 nm.Thin Solid Films 492, 45–51 (2005)
Online since: January 2011
Authors: Shahrum Abdullah, N. Nik Abdullah, M. Hadi Hafezi
Abdullah c Universiti Kebangsaan Malaysia, Department of Mechanical and Material Engineering, Bangi 43600, Selangor, Malaysia aenikkei@eng.ukm.my, b hafezi@ukm.eng.my, c shahrum@vlsi.eng.ukm.my Keywords: UniGrow model, Load interaction effects, Spectrum loading Abstract.
The main problem was the lack of information about various phenomena that can affect variable amplitude fatigue crack growth and interaction between them.
He also mentioned retardation after overload application, which was influenced by several factors, e.g. the overload ratio, baseline-level loading, number of overloads or the fraction of mixed mode.
It is noted that the calculation of the crack opening stress intensity factor in the case of variable amplitude loading is not easy [25].
The choice of model for a given situation may be governed by knowledge of the loading conditions, material properties and background research of the situation.
Online since: May 2011
Authors: Yan Juan Liu, Ming Zhu, Ya Wen Yang, Ai Bin Kang
Experimental Device and filler properties.
Considering these factors comprehensively, the running period in this experiment is flooding 1d and dry 2ds.
The reason is that wastewater flow through the constructed rapid infiltration system by gravity, the pollutants were adsorbed by the first contacted materials, so the upper site o f materials were the mainly position that adsorbed pollutants through mechanical filtration and adsorption.
Clogging is one of the main problems in constructed rapid infiltration system, which can affect the water column and the outlet water quality, also the life span of the system.
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