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Online since: September 2013
Authors: Teruyuki Fukuhara, Chao He, Yang Wang, Yi Bin Chen
In order to discuss the effect of energy saving of heat-reflective insulation coating on exterior walls of building, the wall temperature change of two test rooms with heat insulation or not in Hangzhou has been monitored in summer, and the heat flux data of east, south and west walls were analyzed.
The experiment is carried out in Hangzhou in summer, and conducted by monitoring the indoor and exterior wall temperature of buildings with and without reflective coatings comparatively and analyzing the acquired temperature data.
All the temperatures are measured and recorded every five minutes automatically by Agilent data acquisition system.
For the convenience of analysis, only representative temperature data for one-month period from August 1st to August 30th are analyzed in this paper, which is collected from building envelope.
Furthermore, since the roof temperature and the northern wall temperature of 1# and 2# buildings are very close, the data is omitted in the analysis.
The experiment is carried out in Hangzhou in summer, and conducted by monitoring the indoor and exterior wall temperature of buildings with and without reflective coatings comparatively and analyzing the acquired temperature data.
All the temperatures are measured and recorded every five minutes automatically by Agilent data acquisition system.
For the convenience of analysis, only representative temperature data for one-month period from August 1st to August 30th are analyzed in this paper, which is collected from building envelope.
Furthermore, since the roof temperature and the northern wall temperature of 1# and 2# buildings are very close, the data is omitted in the analysis.
Online since: December 2013
Authors: Hong Xu, Wei Wei Zhang, Karl Maile
And two life prediction methods are used to correlate the present creep-fatigue life data.
It is shown that a significant reduction in fatigue life is observed with hold time in tension, and it is also observed that 1CrMoV steel exhibits a higher creep-fatigue life than 2CrMoNiVW when strain hold time is 16 hours, and 2CrMoNiVW seems to be more sensitive to hold time influence.
Life reduction under creep-fatigue interaction is reported to be mainly due to the creep mechanisms of stress relaxation, which are the same as that of the general monotonic creep after a long enough hold time[8].
(1) can be used to correlate the fatigue data with hold time, where Δεp is the total strain, Nc is cycle to crack, and A, B are constants.
Finally, two life prediction methods are used to correlate the present creep-fatigue life data.
It is shown that a significant reduction in fatigue life is observed with hold time in tension, and it is also observed that 1CrMoV steel exhibits a higher creep-fatigue life than 2CrMoNiVW when strain hold time is 16 hours, and 2CrMoNiVW seems to be more sensitive to hold time influence.
Life reduction under creep-fatigue interaction is reported to be mainly due to the creep mechanisms of stress relaxation, which are the same as that of the general monotonic creep after a long enough hold time[8].
(1) can be used to correlate the fatigue data with hold time, where Δεp is the total strain, Nc is cycle to crack, and A, B are constants.
Finally, two life prediction methods are used to correlate the present creep-fatigue life data.
Online since: May 2012
Authors: Hsien Te Lin, Teow Ngak Ng
The data was recorded concurrently every 5 minutes.
Comparison of Interior Temperature in Zinc-Roof House and Palm-Roof House We chose three related data – exterior temperature, interior temperature of zinc-roof house, and interior temperature of palm- roof house ( Fig. 6) We know the heat transmission of zinc roof is a lot higher than that of the palm-roof so the changes in interior temperature under a zinc roof are a lot more obviously and drastically.
Fig. 7 Comparison of relative humidity under zinc roof, palm- roof and outdoor Conclusion The result of this research proves that the palm-roof comes with better temperature prevention and humidity reduction.
It has absolutely no effect on humidity reduction and damp-proof. 3.
Therefore, it is evident that the palm-roof is effective in both warmth preservation and damp-proof humidity reduction.
Comparison of Interior Temperature in Zinc-Roof House and Palm-Roof House We chose three related data – exterior temperature, interior temperature of zinc-roof house, and interior temperature of palm- roof house ( Fig. 6) We know the heat transmission of zinc roof is a lot higher than that of the palm-roof so the changes in interior temperature under a zinc roof are a lot more obviously and drastically.
Fig. 7 Comparison of relative humidity under zinc roof, palm- roof and outdoor Conclusion The result of this research proves that the palm-roof comes with better temperature prevention and humidity reduction.
It has absolutely no effect on humidity reduction and damp-proof. 3.
Therefore, it is evident that the palm-roof is effective in both warmth preservation and damp-proof humidity reduction.
Online since: October 2012
Authors: Xun Feng Xia, Qiao Li Zhang, Hong Jun Lei, Chang Jia Li, Bei Dou Xi
Based on the data of China Statistical Yearbook and China Environmental Statistics Yearbook, the pollutants discharge and energy utilization efficiency, including technical efficiency (TE), pure technical efficiency (PTE), scale efficiency (SE) and returns to scale (RTS) of China’s industry and its sub-sectors were analyzed by constant returns to scale model (CRS) and variable returns to scale model (VRS) of non-parametric data envelopment analysis (DEA) method.
∑jλjxj-s-=θx0 (6) ∑jλj=1,λj≥0,j=1,2,…,n s-≥0,s+≥0 DEA method principles Data source.
In the evaluation of environmental efficiency, the input data were the GDP of industrial output and the pollutants emitted, including waste water, waste gas and solid waste, the three kinds of forms.
Annual industrial GDP is from the Statistical Yearbook of China[10], and the data during 2001 and 2009 was transformed into comparable prices in 2001.
The energy inputs was from the Energy Statistical Yearbook of China[13], and pollutants data was from Environment Statistical Yearbook of China[14].
∑jλjxj-s-=θx0 (6) ∑jλj=1,λj≥0,j=1,2,…,n s-≥0,s+≥0 DEA method principles Data source.
In the evaluation of environmental efficiency, the input data were the GDP of industrial output and the pollutants emitted, including waste water, waste gas and solid waste, the three kinds of forms.
Annual industrial GDP is from the Statistical Yearbook of China[10], and the data during 2001 and 2009 was transformed into comparable prices in 2001.
The energy inputs was from the Energy Statistical Yearbook of China[13], and pollutants data was from Environment Statistical Yearbook of China[14].
Online since: September 2013
Authors: Jun Wang, Jing Tao Hu
Due to early of energy management system (EMS) is focus on energy data acquisition and centralized monitoring, and the deep analysis of the energy system is not enough, so it can't use the useful information from energy data mining effectively, especially the optimization of energy use, and can not meet the requirements of it.
The energy center management system above basically achieved in a variety of energy data acquisition and monitoring,and the control of the important energy medium.
The defect of previous energy flow detection technology are as follows: Quality of energy flow of real-time data,Flow distribution of real-time data,Network running state data collection is not complete, and cannot complete traceability or monitoring of energy medium to flow in the process of production process, can not meet the real-time monitoring and energy management scheduling requirements.
l In the different production processes of different types of energy, such as the department distributed management and real-time data sharing.
Then use industrial sensing technology and wireless sensor network (WSN) technology to solve bad energy flow under the condition of real-time data acquisition and transmission; Secondly, in view of the different production processes, such as department of production monitoring and control network protocol, to carry on the multiple network fusion, realizing the communication and interoperability; Then, establish various types of energy in the different production processes, such as department of distributed management mode and real-time data sharing mechanism; Eventually build a ideal energy center for integrated data platform (logical model), build energy monitoring information perception based on industrial and the Internet of things technology platform..
The energy center management system above basically achieved in a variety of energy data acquisition and monitoring,and the control of the important energy medium.
The defect of previous energy flow detection technology are as follows: Quality of energy flow of real-time data,Flow distribution of real-time data,Network running state data collection is not complete, and cannot complete traceability or monitoring of energy medium to flow in the process of production process, can not meet the real-time monitoring and energy management scheduling requirements.
l In the different production processes of different types of energy, such as the department distributed management and real-time data sharing.
Then use industrial sensing technology and wireless sensor network (WSN) technology to solve bad energy flow under the condition of real-time data acquisition and transmission; Secondly, in view of the different production processes, such as department of production monitoring and control network protocol, to carry on the multiple network fusion, realizing the communication and interoperability; Then, establish various types of energy in the different production processes, such as department of distributed management mode and real-time data sharing mechanism; Eventually build a ideal energy center for integrated data platform (logical model), build energy monitoring information perception based on industrial and the Internet of things technology platform..
Online since: August 2004
Authors: Noh Yu Kim, Min Sung Hong
Citation &
Copyright (to be inserted by the publisher)
Diagnosis and Reduction of Robot Arm Vibration
for 12-inch Wafer Spin Scrubber
Nohyu Kim
1 and Minsung Hong
2
1
School of Mechatronic Engineering, Korea University of Technology and Education
Byungchun-myun, Chunan, Chungnam 330-860, Korea (nykim@kut.ac.kr)
2
Department of Mechanical Engineering, Ajou University
Wonchun-Dong, Suwon, Kunggi 443-749, Korea
Keywords: Spin Scrubber, Vibration reduction, Robot arm, Topology optimization
Abstract.
Fig. 4 shows FFT data of a vibration signal obtained in the experiment, where the vibration modes including the bending and torsional modes are well separated and recognized.
Final optimal topology obtained from OPTISHAPE after the volume constraint of 60% reduction is represented in Fig. 7, where the top view of the optimal shape is different from the original model.
Diagnosis and experimental measurement of the vibrations for the current model and the optimal models improved by the topology optimization are also conducted to investigate the effect of the shape of the robot arm on the vibration reduction.
From the experimental results for two optimal models made of different materials, the optimal shape of the robot arm developed in this study is proved to be very effective to suppress the vibration by 30% reduction in RMS value.
Fig. 4 shows FFT data of a vibration signal obtained in the experiment, where the vibration modes including the bending and torsional modes are well separated and recognized.
Final optimal topology obtained from OPTISHAPE after the volume constraint of 60% reduction is represented in Fig. 7, where the top view of the optimal shape is different from the original model.
Diagnosis and experimental measurement of the vibrations for the current model and the optimal models improved by the topology optimization are also conducted to investigate the effect of the shape of the robot arm on the vibration reduction.
From the experimental results for two optimal models made of different materials, the optimal shape of the robot arm developed in this study is proved to be very effective to suppress the vibration by 30% reduction in RMS value.
Online since: October 2011
Authors: Chun An Ma, Nan Nan You, Li Mei Chao
Electrochemical reduction of 2,4-DCBA.
To acquire in situ FTIR data, two hundred interferograms were collected at each potential at a resolution 8 cm-1.
Another reduction peak was observed clearly in the negative-going potential scan at around -0.9 V.
The two reduction peaks were assigned to electrochemical reduction of 2,4-DCBA on Pd/Ti electrode.
On the basis of in situ FTIR data, electrochemical hydrodehalogenation reaction of 2,4-DCBA on Pd/Ti electrode might be represented as a sequence of electron additions and chlorine expulsions.
To acquire in situ FTIR data, two hundred interferograms were collected at each potential at a resolution 8 cm-1.
Another reduction peak was observed clearly in the negative-going potential scan at around -0.9 V.
The two reduction peaks were assigned to electrochemical reduction of 2,4-DCBA on Pd/Ti electrode.
On the basis of in situ FTIR data, electrochemical hydrodehalogenation reaction of 2,4-DCBA on Pd/Ti electrode might be represented as a sequence of electron additions and chlorine expulsions.
Online since: May 2012
Authors: Xiao Guo Bi, Xu Dong Liu, Wei Niu, Ying Nan Dong
Ltd. coupled to a PC, and the system was controlled and data recorded using the CorrTest software package.
On the scan towards more negative potentials, a reduction wave is observed at Epc -438 mV.
When and , the equation 2 is approximated to express as (3) There is a linear relationship between the net cathode current density and overpotential, and the ratio of overpotential and net cathode current density is charge transfer resistance Rct, that is (4) According to the test data of cathode polarization curves of graphite felt electrode in electrolyte with soluble lead(II), Fig. 2 showed that the linear relationship between net cathode current density and overpotential.
The oxidation and reduction peak potentials were basically unchanged with the increase of cycle number, and the oxidation and reduction peak potentials were 55 mV and 440 mV, respectively.
(2) The oxidation and reduction peak potentials were basically unchanged with the increase of cycle number, and the oxidation and reduction peak potentials were 55 mV and 440 mV, respectively.
On the scan towards more negative potentials, a reduction wave is observed at Epc -438 mV.
When and , the equation 2 is approximated to express as (3) There is a linear relationship between the net cathode current density and overpotential, and the ratio of overpotential and net cathode current density is charge transfer resistance Rct, that is (4) According to the test data of cathode polarization curves of graphite felt electrode in electrolyte with soluble lead(II), Fig. 2 showed that the linear relationship between net cathode current density and overpotential.
The oxidation and reduction peak potentials were basically unchanged with the increase of cycle number, and the oxidation and reduction peak potentials were 55 mV and 440 mV, respectively.
(2) The oxidation and reduction peak potentials were basically unchanged with the increase of cycle number, and the oxidation and reduction peak potentials were 55 mV and 440 mV, respectively.
Online since: September 2007
Authors: Heiner Ryssel, Anton J. Bauer, Martin Rambach
The influence of the implantation temperature on
the resistivity was identified by modeling temperature dependent resistivity data.
To get a better understanding of the influence of the high temperature implantation on the resistivity, the measured data are fitted with a resistivity model.
Expressions for p(T) and µ(T) have to be found in order to model the measured resistivity data.
The modeled data coincides with the measured temperature dependent resistivity for all analyzed implantation temperatures.
The calculated data are shown in Fig. 3 for implantation temperatures between RT and 1000°C.
To get a better understanding of the influence of the high temperature implantation on the resistivity, the measured data are fitted with a resistivity model.
Expressions for p(T) and µ(T) have to be found in order to model the measured resistivity data.
The modeled data coincides with the measured temperature dependent resistivity for all analyzed implantation temperatures.
The calculated data are shown in Fig. 3 for implantation temperatures between RT and 1000°C.
Online since: March 2013
Authors: Joompondej Bamrungwongtaree, Mongkol Mongkolwongrojn
Study Swaging Process for Reduction Swage Effect in Hard Disk Drive
Joompondej Bamrungwongtaree1,a and Mongkol Mongkolwongrojn 2,b
1College of Data Storage Innovation, King Mongkut’s Institute of Technology Ladkrabang, Thailand
2Department of Mechanical Engineering, King Mongkut’s Institute of Technology Ladkrabang, Thailand
ajoompondej.bamrungwongtaree@seagate.com, bkmmongko@kmitl.ac.th
Keywords: Ball Swaging, Finite Element, Head Stack Assembly, Spacer Key, Boss Tower
Abstract.
Furthermore, the reduction of arm deformation and gap to arm cause increasing in HSA performance.
The new design of arm aperture is able to apply with thinner arm for reduction of the arm tip deformation and gap to arm.
Joompon: Effect of the Spacer Key to HSA, 3rd International Conference on Data Storage Technology, Bangkok, Thailand, 2010, pp.131-134 [8] B.
Joomponladej: A Development of modeling for Resonance Analysis, 4th International Conference on Data Storage Technology, Bangkok, Thailand, 2011, pp.108-111 [10] A.
Furthermore, the reduction of arm deformation and gap to arm cause increasing in HSA performance.
The new design of arm aperture is able to apply with thinner arm for reduction of the arm tip deformation and gap to arm.
Joompon: Effect of the Spacer Key to HSA, 3rd International Conference on Data Storage Technology, Bangkok, Thailand, 2010, pp.131-134 [8] B.
Joomponladej: A Development of modeling for Resonance Analysis, 4th International Conference on Data Storage Technology, Bangkok, Thailand, 2011, pp.108-111 [10] A.