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Online since: August 2008
Authors: Toly Chen, Yi Chi Wang, Yu Cheng Lin, Kai Hsiang Yang
Conversely, huge amount of data and lengthy simulation time are two disadvantages of PS.
On the other hand, much less time and fewer data are required to generate a cycle time forecast with a BPN than with PS.
At first, the data of the jobs are sorted in ascending order of the prediction error.
Then the sorted data is divided into m equal parts.
Experimental Results and Discussion Test Data Collection.
On the other hand, much less time and fewer data are required to generate a cycle time forecast with a BPN than with PS.
At first, the data of the jobs are sorted in ascending order of the prediction error.
Then the sorted data is divided into m equal parts.
Experimental Results and Discussion Test Data Collection.
Online since: August 2018
Authors: Mohd Amri Lajis, Shazarel Shamsudin, Nur Kamilah Yusuf, Azlan Ahmad
Prior to the simulation, the introductory investigation was executed to provide preliminary data on the behaviour of the material when it is exerted to a certain force.
Workpiece height reduction throughout the hot press forging simulation Correspondingly, the automated remeshing techniques compiled in the simulation software facilitates precision in data recording.
More elements denote comprehensive data acquisition, as less residual obtained between the areas that are being covered.
The element numbers fall roughly 1.58% from the initial amount due to the reduction in thickness.
It is proven that the reduction in thickness is generally occurred because of the flesh, among other.
Workpiece height reduction throughout the hot press forging simulation Correspondingly, the automated remeshing techniques compiled in the simulation software facilitates precision in data recording.
More elements denote comprehensive data acquisition, as less residual obtained between the areas that are being covered.
The element numbers fall roughly 1.58% from the initial amount due to the reduction in thickness.
It is proven that the reduction in thickness is generally occurred because of the flesh, among other.
Online since: May 2020
Authors: Sergey O. Nepryakhin, Danil L. Shvarts
The comparison of the calculated values with the experimental data obtained on a laboratory mill 200 confirmed that the variational principle of minimum total power has sufficient accuracy for analysis of double -T section rolling in universal groove.
The following independent non-dimensional parameters for the unambiguous description of the shape and dimensions of the deformation zone according to this scheme were adopted: the reduction coefficient of web 1/ηw=d'/d; the reduction coefficient of flange 1/ηf=a'/a; relative height of profile flanges b=hf/a; relative thickness of flanges a=a/d; relative length of web lw=lw/d; reduced diameter of horizontal and vertical rolls Ah=Dh/d, Av=Dv/a; slope of the profile flanges tgφ.
Under the influence of web and flanges reduction, profile flanges get height increment Δhf=hf-h'f, and the length of each profile element increases according to the reduction ratio λw and λf.
The obtained calculation data compared with the results of experimental studies, estimating the error of calculation of the experimental data ΔP=(Pcal-Рex)/Рex, ΔМ=(Мcal-Мex)/Мex in percentage.
Calculations and experimental data in the H-beam rolling at the laboratory mill 200 Thickness [mm] Reduction ratio λ Flange spread Δhf [mm] Experimental data of forces P [kN] and torque M [N·m] Calculation data of forces P [kN] and torque M [N·m] Convergence of calculation and experimental data [%] Web Flange d d' a a' М Рh Pв М Рh Pв ΔM ΔPh ΔPv 9.85 7.65 10.9 8.4 1.288 0.9 435 36.5 10.3 494 32.1 11.4 13.6 -12.1 10.3 9.75 7.25 9.55 7.05 1.345 1 555 39.5 11.2 551 29.2 14.5 -0.7 -26.1 29.7 5.75 4.1 7.2 6.03 1.402 1 515 40 18.6 569 48.6 14.4 10.5 21.5 10 5.7 4.65 7.25 5.74 1.226 1 260 33 8.3 327 38.4 10.2 25.9 16.4 23.5 The estimated data have a satisfactory convergence with the results of the experimental studies.
The following independent non-dimensional parameters for the unambiguous description of the shape and dimensions of the deformation zone according to this scheme were adopted: the reduction coefficient of web 1/ηw=d'/d; the reduction coefficient of flange 1/ηf=a'/a; relative height of profile flanges b=hf/a; relative thickness of flanges a=a/d; relative length of web lw=lw/d; reduced diameter of horizontal and vertical rolls Ah=Dh/d, Av=Dv/a; slope of the profile flanges tgφ.
Under the influence of web and flanges reduction, profile flanges get height increment Δhf=hf-h'f, and the length of each profile element increases according to the reduction ratio λw and λf.
The obtained calculation data compared with the results of experimental studies, estimating the error of calculation of the experimental data ΔP=(Pcal-Рex)/Рex, ΔМ=(Мcal-Мex)/Мex in percentage.
Calculations and experimental data in the H-beam rolling at the laboratory mill 200 Thickness [mm] Reduction ratio λ Flange spread Δhf [mm] Experimental data of forces P [kN] and torque M [N·m] Calculation data of forces P [kN] and torque M [N·m] Convergence of calculation and experimental data [%] Web Flange d d' a a' М Рh Pв М Рh Pв ΔM ΔPh ΔPv 9.85 7.65 10.9 8.4 1.288 0.9 435 36.5 10.3 494 32.1 11.4 13.6 -12.1 10.3 9.75 7.25 9.55 7.05 1.345 1 555 39.5 11.2 551 29.2 14.5 -0.7 -26.1 29.7 5.75 4.1 7.2 6.03 1.402 1 515 40 18.6 569 48.6 14.4 10.5 21.5 10 5.7 4.65 7.25 5.74 1.226 1 260 33 8.3 327 38.4 10.2 25.9 16.4 23.5 The estimated data have a satisfactory convergence with the results of the experimental studies.
Online since: June 2010
Authors: Manabu Enoki, Shigeru Konda, Pornthep Chivavibul, Yasushi Inada, Tamotsu Tomizawa, Akira Toda
A
core loss reduction was achieved with the NiCoP coating with a thickness of 1 µm magnetized at a
magnetic flux density of 0.3T.
The carboxylic-acid-based complexing agent was used to control the rate of release of free metal ions for the reduction reaction.
The data were presented in the normalized values of core loss measured from plated specimens with those measured from the as-received one for each manetization condition.
In this present paper, we merely would like to show the possibility of core loss reduction by applying magnetic coating.
Although the core loss reduction achieved with the NiCoP coating with a thickness of 1 µm was still lower for the industrial benefit, a systematic experimental plan to clarify the role of coating and its properties on core loss reduction is required for the further study and this is expected to obtain more core loss reduction.
The carboxylic-acid-based complexing agent was used to control the rate of release of free metal ions for the reduction reaction.
The data were presented in the normalized values of core loss measured from plated specimens with those measured from the as-received one for each manetization condition.
In this present paper, we merely would like to show the possibility of core loss reduction by applying magnetic coating.
Although the core loss reduction achieved with the NiCoP coating with a thickness of 1 µm was still lower for the industrial benefit, a systematic experimental plan to clarify the role of coating and its properties on core loss reduction is required for the further study and this is expected to obtain more core loss reduction.
Online since: August 2019
Authors: Fitrilawati Fitrilawati, Ayi Bahtiar, Norman Syakir, Vika Marcelina, Diyan Unmu Dzujah, Yeni Wahyuni Hartati
We compare energy storage characteristics of ITO-GO and Cu-GO using cyclic voltammogram data.
Energy storage characteristics of the films was examined from the energy density estimated from Cyclic Voltamogram (CV) data.
The CV curves of both samples do have oxidation and reduction peaks.
Cheng, The reduction of graphene oxide, Carbon 50(9) (2012) 3210-3228
Nugroho, Thermal reduction study of graphene oxide paper, IOP Conf.
Energy storage characteristics of the films was examined from the energy density estimated from Cyclic Voltamogram (CV) data.
The CV curves of both samples do have oxidation and reduction peaks.
Cheng, The reduction of graphene oxide, Carbon 50(9) (2012) 3210-3228
Nugroho, Thermal reduction study of graphene oxide paper, IOP Conf.
Online since: December 2012
Authors: Xiao Bei Zhang, Yong Sheng Zhang
The measured value of the heat transfer coefficient of the exterior walls is better than the designed value before renovation by 1.33 W/m2·K, or a reduction of 80.7 %; the measured value of the heat transfer coefficient of the roof is better than the designed value before renovation by 0.224 W/m2·K, or a reduction of 49.8 %.
To understand the change of indoor thermal environment after renovation, we installed temperature and humidity sensors and exterior wall internal surface temperature sensors in each northward facing room of the #2 residential building in the heating seasons during 2010-2011 and 2011-2012, and set the sensors to read data once every 0.5 h.
Test results of computer-acquired test data for a continuous half month are shown in Table 2.
Comparison of temperature before and after renovation Average indoor temperature [°C] Average indoor humidity [%] Average internal surface temperature of exterior wall [°C] Average internal surface temperature of thermal bridge [°C] Before renovation 15.4 37.7 14.6 10.2 After renovation 22.6 35.2 21.9 15.7 According to the test data, after renovation, the average indoor temperature of the #2 residential building ranged within 19.6–24.4 °C, the average relative humidity ranged within 22.1–46.7 %, the average internal surface temperature of the exterior wall ranged within 18.7–22.6 °C, and the average internal surface temperature of the thermal bridge ranged within 14.6–16.6 °C.
(4) Shanxi Province completed an energy-saving renovation of a total of 4.67 million square meters of existing residential buildings during the 11th Five-Year Plan period, leading to a coal reduction of as much as 46,000 tonnes and a carbon dioxide emission reduction of 115,000 tonnes, so the effects of energy conservation and emission reduction are significant.
To understand the change of indoor thermal environment after renovation, we installed temperature and humidity sensors and exterior wall internal surface temperature sensors in each northward facing room of the #2 residential building in the heating seasons during 2010-2011 and 2011-2012, and set the sensors to read data once every 0.5 h.
Test results of computer-acquired test data for a continuous half month are shown in Table 2.
Comparison of temperature before and after renovation Average indoor temperature [°C] Average indoor humidity [%] Average internal surface temperature of exterior wall [°C] Average internal surface temperature of thermal bridge [°C] Before renovation 15.4 37.7 14.6 10.2 After renovation 22.6 35.2 21.9 15.7 According to the test data, after renovation, the average indoor temperature of the #2 residential building ranged within 19.6–24.4 °C, the average relative humidity ranged within 22.1–46.7 %, the average internal surface temperature of the exterior wall ranged within 18.7–22.6 °C, and the average internal surface temperature of the thermal bridge ranged within 14.6–16.6 °C.
(4) Shanxi Province completed an energy-saving renovation of a total of 4.67 million square meters of existing residential buildings during the 11th Five-Year Plan period, leading to a coal reduction of as much as 46,000 tonnes and a carbon dioxide emission reduction of 115,000 tonnes, so the effects of energy conservation and emission reduction are significant.
Online since: September 2016
Authors: Jian Chen, Zheng Qiang Lei, Fu Xiang Wang, Ting Wang, Li Jian Zhou
In this study, features of ILI data are investigated to elaborate the necessary of filtering analysis for strain analysis of the dent with ILI data.
Then typical filtering methods are used to smooth the ILI data, and strain analysis are carried out with the smoothed data to study the practicability of strain assessment.
However, strain analyses require tedious calculation of dent curvature at each data of ILI.
Thus to filter original ILI data is necessary for strain estimation of the dent.
The minimum radius and the maximum radius are located in ILI data 1 and 3.
Then typical filtering methods are used to smooth the ILI data, and strain analysis are carried out with the smoothed data to study the practicability of strain assessment.
However, strain analyses require tedious calculation of dent curvature at each data of ILI.
Thus to filter original ILI data is necessary for strain estimation of the dent.
The minimum radius and the maximum radius are located in ILI data 1 and 3.
Online since: October 2010
Authors: Cheng Rui Zhang, Ri Liang Liu, Guo Qiang Yuan, Yuan Cai Zhang
It is predicted
that the application of STEP-NC will result in 35% reduction in time for job shop to set up
machining jobs, 75% reduction in data preparation, and 50% reduction in machining time
(www.steptools.com).
It provides many functions to store or extract data from STEP media database.
SDAI defines an application programming interface to EXPRESS defined data.
… ENDSEC; DATA;
In the DATA section, STEP-NC files are based on EXPRESS-defined data model.
It provides many functions to store or extract data from STEP media database.
SDAI defines an application programming interface to EXPRESS defined data.
… ENDSEC; DATA;
In the DATA section, STEP-NC files are based on EXPRESS-defined data model.
Online since: October 2014
Authors: Ciro Caramiello, Stefania Iannuzzi, Alessandro Acernese, Doriana D'Addona
Target Variable domain (TV) over a large set of experimental data affected by acquisition noise leading to a typical sparse multiblock array.
A first glance to figure 6 shows that the network matching onto experimental data is fairly good with a relative error map shown in figure 7.
Fig. 6 : Data comparison (experimental vs.
After keeping into account the major root causes with a preliminary statistical investigation, we have analyzed the predictors domain with the aid of a SVD rank reduction analysis with the aim of discriminating the most influential KPVs for the specific data set.
This will be intended in terms of a further substantial reduction of local and overall errors (with Li-norms, in particular) due to acquisition noise, hopefully also in the presence of structural and accidental missing data blocks in the sampled data set.
A first glance to figure 6 shows that the network matching onto experimental data is fairly good with a relative error map shown in figure 7.
Fig. 6 : Data comparison (experimental vs.
After keeping into account the major root causes with a preliminary statistical investigation, we have analyzed the predictors domain with the aid of a SVD rank reduction analysis with the aim of discriminating the most influential KPVs for the specific data set.
This will be intended in terms of a further substantial reduction of local and overall errors (with Li-norms, in particular) due to acquisition noise, hopefully also in the presence of structural and accidental missing data blocks in the sampled data set.
Online since: December 2023
Authors: Thierno Amadou Bah, Farid Waqas, Hai Liang Yu
After subjecting the as-cast AA5083/0.33wt%Sc to 50% cryorolling reduction, the UTS increased to 404 MPa.
The 6mm thick scalped ingots were cryorolled to a thickness of 3 mm (50% rolling reduction) at -196°C.
The rolling speed was set as 4 m/min, with each pass having 10% rolling reduction.
The experimental values of all Al peaks correspond to the standard data (JCPDS).
In Fig.6b, the UTS of the AA5083/0.33%Sc increased to 404.2 ± 3.7 MPa after 50% rolling reduction.
The 6mm thick scalped ingots were cryorolled to a thickness of 3 mm (50% rolling reduction) at -196°C.
The rolling speed was set as 4 m/min, with each pass having 10% rolling reduction.
The experimental values of all Al peaks correspond to the standard data (JCPDS).
In Fig.6b, the UTS of the AA5083/0.33%Sc increased to 404.2 ± 3.7 MPa after 50% rolling reduction.