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Online since: June 2014
Authors: Shigeo Saimoto, Hai Ou Jin, Kaan Inal
From the true stress – true plastic strain data sets, CRA were performed and the resulting parameters are listed in Table 1.
Eq2 below can replicate the σ – ε data using at least two fitting curves:
The derived shear stress τρ = {(σ0final – 49.76)/M + τ3} from the tensile data in Table 1 versus the thickness shear strain.
The reliable optimum fits are for β2 and β3 because the original tensile data was not reported and hence the initial β1 is approximate as indicated by dashed line in the log λ versus log τ plot.
Dashed-line indicates ambiguity due to scanning of printed data.
Eq2 below can replicate the σ – ε data using at least two fitting curves:
The derived shear stress τρ = {(σ0final – 49.76)/M + τ3} from the tensile data in Table 1 versus the thickness shear strain.
The reliable optimum fits are for β2 and β3 because the original tensile data was not reported and hence the initial β1 is approximate as indicated by dashed line in the log λ versus log τ plot.
Dashed-line indicates ambiguity due to scanning of printed data.
Online since: August 2011
Authors: Shao Bo Lu, Yi Nong Li, Yi Liang Dong
The triangle function method has been adopted to produce the random data of roughness road input.
This implies that the proposed triangle function method for producing the random data is effective.
The spline curve was used to fit the nonlinear property of the real spring and damper in ADAMS based on the measured data.
The measured and simulation data both in time and frequency are presented.
A 3-D dynamic model is established based on the measured data in the ADAMS.
This implies that the proposed triangle function method for producing the random data is effective.
The spline curve was used to fit the nonlinear property of the real spring and damper in ADAMS based on the measured data.
The measured and simulation data both in time and frequency are presented.
A 3-D dynamic model is established based on the measured data in the ADAMS.
Online since: July 2011
Authors: Ke Mei Sun, Chun He Yu
Peripheral SDRAM are expanded through peripheral bus to save the large amounts of temporary data in data processing to reduce the time for image processing.
On account of large amount, peripheral SDRAM are expanded through peripheral bus to save the large amounts of temporary data in data processing to reduce the time for image processing.
The measurement data are transmitted to main-controlling PC for saving by the circuit of communication interface.
CPLD controlling chips adopts XC95144 which decoding BT.656 digital code stream and storing the data in sequence.
Design of Peripheral RAM The main function of peripheral RAM of DSP is to store image data.
On account of large amount, peripheral SDRAM are expanded through peripheral bus to save the large amounts of temporary data in data processing to reduce the time for image processing.
The measurement data are transmitted to main-controlling PC for saving by the circuit of communication interface.
CPLD controlling chips adopts XC95144 which decoding BT.656 digital code stream and storing the data in sequence.
Design of Peripheral RAM The main function of peripheral RAM of DSP is to store image data.
Online since: May 2007
Authors: Xin Ming Zhang, Yun Lai Deng, Yong Zhang
Local orientation distributions of two neighbouring grains initially orientated near
(01l)[100] and (210)[001], in a pure Al poly-crystal aggregate rolled by a reduction of 65% at room
temperature have been investigated using electron backscatter diffraction (EBSD) technique.
In this investigation, two coarse column grains embraced in a high purity Al poly-crystalline sample were traced before and after rolling, and a TexSEM Laboratories (TSL) EBSD unit controlled by the OIM acquisition software determined micro-orientation data.
The deformation was carried out to a total engineering thickness reduction (r) of 65% by 4 passes at room temperature and rolling oil was used to ensure homogeneous macroscopic deformation.
(a) inverse pole figure map for ND//[001], (b) ϕ2=constant sections with f(g)max from ODFs for the zones of A-IP, A-BP, B-IP and B-BP, respectively, calculated using the orientation data with Gauss half-scatter width of 5°.
In order to grasp characters of micro-orientation distributions, orientation distribution functions (ODFs) were calculated using the orientation data of various zones in Fig.2(a), respectively.
In this investigation, two coarse column grains embraced in a high purity Al poly-crystalline sample were traced before and after rolling, and a TexSEM Laboratories (TSL) EBSD unit controlled by the OIM acquisition software determined micro-orientation data.
The deformation was carried out to a total engineering thickness reduction (r) of 65% by 4 passes at room temperature and rolling oil was used to ensure homogeneous macroscopic deformation.
(a) inverse pole figure map for ND//[001], (b) ϕ2=constant sections with f(g)max from ODFs for the zones of A-IP, A-BP, B-IP and B-BP, respectively, calculated using the orientation data with Gauss half-scatter width of 5°.
In order to grasp characters of micro-orientation distributions, orientation distribution functions (ODFs) were calculated using the orientation data of various zones in Fig.2(a), respectively.
Online since: April 2009
Authors: Tomasz Goryczka, Henryk Morawiec, Józef Lelątko, Krystian Prusik, Andrzej Drdzeń
The final reduction of the samples thickness
was: 28%, 36%, 57% and 69%.
The final reduction of the samples thickness was 28%, 36%, 57% and 69%.
The initial orientation of the as cast specimen can be seen in the pole figures based on the EBSD scattered data in Fig. 3.
Pole figures of the initial orientation of alloy 1, a) pole figures with scattered data, b) inverse pole figure, c) scheme of {001} poles rotated around [110] axis a) b) 010 100 010 001 110 110 110 110 211 Computer treatment of the scattered data allows to contouring the pole figure which selects the preferred orientation and reveals their distribution.
The final reduction of the samples thickness was 28%, 36%, 57% and 69%.
The initial orientation of the as cast specimen can be seen in the pole figures based on the EBSD scattered data in Fig. 3.
Pole figures of the initial orientation of alloy 1, a) pole figures with scattered data, b) inverse pole figure, c) scheme of {001} poles rotated around [110] axis a) b) 010 100 010 001 110 110 110 110 211 Computer treatment of the scattered data allows to contouring the pole figure which selects the preferred orientation and reveals their distribution.
Online since: April 2020
Authors: Yuriy Sharkeev, Alexandr Saprykin, Natalya Saprykina, Egor Ibragimov
The research data can be applied to the improvement of up-to-date optimization approaches to manufacturing process parameters in SLM technology.
The data show that inclusions of melted particles in an article to be synthesized are extremely important for mechanical properties of products manufactured in SLM.
Research data will be relevant for the improvement of up-to-date optimization techniques of SLM manufacturing processes.
Appropriate melting conditions are required for quality melted tracks and reduction of drop formation.
Figure 2 and observation data bring to light that an upward segment in the curve is caused by coagulated particles above the surface, Fig. 3, a; whereas shrinkage is a result of sinking coagulated particles to the powder layer, Fig. 3, b.
The data show that inclusions of melted particles in an article to be synthesized are extremely important for mechanical properties of products manufactured in SLM.
Research data will be relevant for the improvement of up-to-date optimization techniques of SLM manufacturing processes.
Appropriate melting conditions are required for quality melted tracks and reduction of drop formation.
Figure 2 and observation data bring to light that an upward segment in the curve is caused by coagulated particles above the surface, Fig. 3, a; whereas shrinkage is a result of sinking coagulated particles to the powder layer, Fig. 3, b.
Online since: February 2019
Authors: Vladimir Yuryevich Bazhin, Sergei N. Fedorov, Vladimir G. Povarov
It has shown thermodynamic data, results of experiment, temperatures of anatase to rutile transformation of non-doped and doped titanium dioxide, its X-Ray diffraction and TGA.
The thermodynamic data is presented in Table 1 of the reactions (1) and (2).
According the data of the table theoretically it’s possible to produse expected chemical compounds.
TGA of non-doped titanium dioxide (Fig. 1) shows phase formation of anatase at 380.64 °C and then rutile formation at the begining 566.74 °C till 756.58 °C which is comparable to the literature data [1, 4, 13].
The oxygen defect levels are influenced by atmospheric conditions, reduction or oxidation reactions, unintentional impurities, and intentional dopants.
The thermodynamic data is presented in Table 1 of the reactions (1) and (2).
According the data of the table theoretically it’s possible to produse expected chemical compounds.
TGA of non-doped titanium dioxide (Fig. 1) shows phase formation of anatase at 380.64 °C and then rutile formation at the begining 566.74 °C till 756.58 °C which is comparable to the literature data [1, 4, 13].
The oxygen defect levels are influenced by atmospheric conditions, reduction or oxidation reactions, unintentional impurities, and intentional dopants.
Online since: November 2023
Authors: Vishwakarma Jaydeep, Kausik Chattopadhyay, N.C. Santhi Srinivas
True stress-true strain data of AM maraging steel in AB and HT conditions have been analysed using Hollomon, Ludwik, Swift, Ludwigson and Voce plastic flow relationships.
True stress–log true plastic strain data fitted using various flow relationships for: (a) 0o as built (AB) sample and (b) 0o heat treated (HT) sample.
The fatigue life data of different samples have been shown in Table 2.
In addition, after heat treatment, the majority of AM samples exhibited an increase in strength without a significant reduction in ductility.
Post heat treatment was found to be very effective to improve fatigue life in all samples and major enhancement in fatigue life was observed due to formation of precipitates and reduction in size and number of defects.
True stress–log true plastic strain data fitted using various flow relationships for: (a) 0o as built (AB) sample and (b) 0o heat treated (HT) sample.
The fatigue life data of different samples have been shown in Table 2.
In addition, after heat treatment, the majority of AM samples exhibited an increase in strength without a significant reduction in ductility.
Post heat treatment was found to be very effective to improve fatigue life in all samples and major enhancement in fatigue life was observed due to formation of precipitates and reduction in size and number of defects.
Online since: October 2012
Authors: Pavel A. Akimov
Analytical solution along basic dimension is apparently preferable in all aspects for qualitative analysis of calculation data.
The reduction of the initial boundary problem to multipoint boundary problem for the first-order system of ordinary differential equations with operational coefficients by separation of derivatives with respect to the basic dimension.
The reduction (after introduction of additional unknowns) of the considering problem to resulting multipoint boundary problem for the first-order system of ordinary differential equations with piecewise-constant coefficients.
It is necessary to note that in some cases, reduction to the multipoint boundary problem for the second-order system of ordinary differential equations is much more preferable.
The reduction of the initial boundary problem to multipoint boundary problem for the first-order system of ordinary differential equations with operational coefficients by separation of derivatives with respect to the basic dimension.
The reduction (after introduction of additional unknowns) of the considering problem to resulting multipoint boundary problem for the first-order system of ordinary differential equations with piecewise-constant coefficients.
It is necessary to note that in some cases, reduction to the multipoint boundary problem for the second-order system of ordinary differential equations is much more preferable.
Online since: December 2016
Authors: Rene Alejandro Castro, Evgeniy N. Lushin
Now there is some information on dielectric properties of this type of materials, but there is no sufficient data on their communications with structural features.
Introduction of potassium chloride to the polymeric system leads to reduction in value of dielectric permittivity in the field of high frequencies, and to its increase in the field of low frequencies.
This interaction leads to reduction of number of light relaxators in a polymeric composite.
· Introduction of potassium chloride (KCl) to the polymeric system leads to reduction in value of dielectric permeability in the field of high frequencies, and to its increase in the field of low frequencies.
Introduction of potassium chloride to the polymeric system leads to reduction in value of dielectric permittivity in the field of high frequencies, and to its increase in the field of low frequencies.
This interaction leads to reduction of number of light relaxators in a polymeric composite.
· Introduction of potassium chloride (KCl) to the polymeric system leads to reduction in value of dielectric permeability in the field of high frequencies, and to its increase in the field of low frequencies.