Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357719
A. Saprykin, N. Saprykina
Quality improvement problem has been considered for a laser sintered surface layer. Purposely built experimental setup was decribed together with a four-factor experiment design on laser sintering PMS-1 copper powder. A mathematical model describing the effect of laser sintering process parameters on the surface roughness has been proposed. Practical recommendation for improving the quality of the surface layer is given.
{"title":"Engineering support for improving quality of layer-by-layer laser sintering","authors":"A. Saprykin, N. Saprykina","doi":"10.1109/IFOST.2012.6357719","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357719","url":null,"abstract":"Quality improvement problem has been considered for a laser sintered surface layer. Purposely built experimental setup was decribed together with a four-factor experiment design on laser sintering PMS-1 copper powder. A mathematical model describing the effect of laser sintering process parameters on the surface roughness has been proposed. Practical recommendation for improving the quality of the surface layer is given.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131398080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357678
W. Nessim, Fujun Zhang, Zhao Chang-lu, Zhu Zhenxia
In recent years, a significant interest in hybrid electric power unit has arisen globally due to its reliability and efficiency. This paper will discuss the benefits of using advanced thermal management systems in hybrid electric drivetrain, and the different control strategies that can be used to enhance system performance. A detailed one dimensional (1D) simulation model for power split hybrid electric system was developed which consists of three cooling circuits. This model is characterized by a complete modularity and permits the simulation of any new design configuration to investigate the effect of advanced thermal management on system performance. Proportional Integration Derivative (PID) module was used to apply the control strategies. The system behavior has been optimized using Design of Experiment (DoE) method. The simulation results showed a superb fuel economy (4:11) % that solves the problems of high operating costs, also decreasing time of cold start by 50% and increasing the high temperature of the coolant up to 125°C. The motor and generator temperature controlled to the optimum temperature which operate them at the maximum efficiency. These results can be used to be the basis of the final system layout and thermal management strategy.
{"title":"Effect of advanced thermal management systems on hybrid electric drive units","authors":"W. Nessim, Fujun Zhang, Zhao Chang-lu, Zhu Zhenxia","doi":"10.1109/IFOST.2012.6357678","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357678","url":null,"abstract":"In recent years, a significant interest in hybrid electric power unit has arisen globally due to its reliability and efficiency. This paper will discuss the benefits of using advanced thermal management systems in hybrid electric drivetrain, and the different control strategies that can be used to enhance system performance. A detailed one dimensional (1D) simulation model for power split hybrid electric system was developed which consists of three cooling circuits. This model is characterized by a complete modularity and permits the simulation of any new design configuration to investigate the effect of advanced thermal management on system performance. Proportional Integration Derivative (PID) module was used to apply the control strategies. The system behavior has been optimized using Design of Experiment (DoE) method. The simulation results showed a superb fuel economy (4:11) % that solves the problems of high operating costs, also decreasing time of cold start by 50% and increasing the high temperature of the coolant up to 125°C. The motor and generator temperature controlled to the optimum temperature which operate them at the maximum efficiency. These results can be used to be the basis of the final system layout and thermal management strategy.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132623028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357631
D. Kutuzov, A. Osovskiy, E. Motorina, O. Stukach
In the paper, the problems of design of the parallel space switching systems is considered. The shortcomings of crossbar switches are analyzed as well as the possibilities of design of parallel switching in multistage systems. There is also a description of the structure of parallel cross switch, which is the basic one in building the ladder circuits. The structure of the switching elements of the parallel space switching systems is described as well. The parallel space switching systems based on such switch cabins will allow to reduce the connection time and losses caused by the congestion of the general control unit.
{"title":"Parallel switching in multistage systems","authors":"D. Kutuzov, A. Osovskiy, E. Motorina, O. Stukach","doi":"10.1109/IFOST.2012.6357631","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357631","url":null,"abstract":"In the paper, the problems of design of the parallel space switching systems is considered. The shortcomings of crossbar switches are analyzed as well as the possibilities of design of parallel switching in multistage systems. There is also a description of the structure of parallel cross switch, which is the basic one in building the ladder circuits. The structure of the switching elements of the parallel space switching systems is described as well. The parallel space switching systems based on such switch cabins will allow to reduce the connection time and losses caused by the congestion of the general control unit.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"340 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114003901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357522
E. Khlebnikova, I. Dolganov, E. Ivanchina
Computer modeling system has been created, based on the physical-chemical model of the linear alkyl benzenes production, to predict the activity and stability of dehydrogenation catalysts - rate-limiting step of the base products production, evaluate numerical effect of process parameters on the product chemical composition, that allows to predict the efficiency of chemical-engineering system devices of dehydrogenation and optimize this process.
{"title":"Optimization of linear alkyl benzene production","authors":"E. Khlebnikova, I. Dolganov, E. Ivanchina","doi":"10.1109/IFOST.2012.6357522","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357522","url":null,"abstract":"Computer modeling system has been created, based on the physical-chemical model of the linear alkyl benzenes production, to predict the activity and stability of dehydrogenation catalysts - rate-limiting step of the base products production, evaluate numerical effect of process parameters on the product chemical composition, that allows to predict the efficiency of chemical-engineering system devices of dehydrogenation and optimize this process.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357561
You-Dong Li, Limin Dong, Zongyuan Li, Lin Sun, Xianyou Zhang
We have successfully prepared the luminescent material of Sr2(P2O7):Ce3+, Tb3+ by the method of the chemical co-precipitation. The phase structure, surface morphology and fluorescence properties were investigated by the scanning electronic microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL). It showed that the luminescent material is composed of the pure Sr2(P2O7) phase, and there no phases of rare earth phosphate appeared. The SEM micrographs showed uniform particles with good crystallinity of luminescent material synthesized at 1100°C. PL spectrum showed the luminescent material fluorescence effect best with nSr: nTb= 100: 1, nTb: nCe=2:3, sintering at 1100°C, the optimal heat preservation time was 3h.
{"title":"Preparation and luminescent properties of Sr2(P2O7):Tb3+, Ce3+","authors":"You-Dong Li, Limin Dong, Zongyuan Li, Lin Sun, Xianyou Zhang","doi":"10.1109/IFOST.2012.6357561","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357561","url":null,"abstract":"We have successfully prepared the luminescent material of Sr<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>):Ce<sup>3+</sup>, Tb<sup>3+</sup> by the method of the chemical co-precipitation. The phase structure, surface morphology and fluorescence properties were investigated by the scanning electronic microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL). It showed that the luminescent material is composed of the pure Sr<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>) phase, and there no phases of rare earth phosphate appeared. The SEM micrographs showed uniform particles with good crystallinity of luminescent material synthesized at 1100°C. PL spectrum showed the luminescent material fluorescence effect best with n<sub>Sr</sub>: n<sub>Tb</sub>= 100: 1, n<sub>Tb</sub>: n<sub>Ce</sub>=2:3, sintering at 1100°C, the optimal heat preservation time was 3h.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122643078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357740
Luangsod Somchai, T. Anan, F. Thongchai, C. Prakorb
This research is an analysis of stiffener plate dimensions at the column base of the overhanging traffic sign post under effect on vehicle-induced gusts. The finite element analysis (FEA) result is compared with the result form computation using mathematical equation and an experimental result which cited from Fongsamootr T. and Chartpuk P. [2006]. It is found that the FEA result has deviation about 1% and 8% respectively. Traffic sign post structure is exerted by three forces in the same time; body force, Vehicle-Induced Gusts and wind load. The higher stiffener plate leads to decrease of maximum stress at the column base. Height extension of stiffener plate from 250 to 350 mm with fixed thickness and base width leads to increase in the safety factor of column and stiffener plate. Rectangular stiffener plate with cut off a corner (type C) is the best type for supporting the base of traffic sign post column. Cutting of a corner of rectangular stiffener plate results increase of stress in itself but less than maximum stress in traffic sign post column.
本文研究了车辆阵风作用下悬挑交通标志柱基础加劲板尺寸的影响。采用数学方程和引用Fongsamootr T. and Chartpuk P.[2006]的实验结果，将有限元分析(FEA)结果与计算结果进行比较。结果表明，有限元分析结果偏差分别为1%和8%左右。交通标志立柱结构受三种力量同时作用;车身力，车辆诱导阵风和风荷载。加劲板越高，柱底最大应力越小。在固定厚度和基础宽度的情况下，加筋板高度由250 mm增加到350 mm，使柱和加筋板的安全系数增加。截角矩形加筋板(C型)是支撑交通标志立柱底座的最佳型式。矩形加劲板截角后，其本身应力增大，但小于交通标志柱的最大应力。
{"title":"Stress analysis of stiffener plate at the base of the overhanging traffic sign post under effect of vehicle-induced gusts","authors":"Luangsod Somchai, T. Anan, F. Thongchai, C. Prakorb","doi":"10.1109/IFOST.2012.6357740","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357740","url":null,"abstract":"This research is an analysis of stiffener plate dimensions at the column base of the overhanging traffic sign post under effect on vehicle-induced gusts. The finite element analysis (FEA) result is compared with the result form computation using mathematical equation and an experimental result which cited from Fongsamootr T. and Chartpuk P. [2006]. It is found that the FEA result has deviation about 1% and 8% respectively. Traffic sign post structure is exerted by three forces in the same time; body force, Vehicle-Induced Gusts and wind load. The higher stiffener plate leads to decrease of maximum stress at the column base. Height extension of stiffener plate from 250 to 350 mm with fixed thickness and base width leads to increase in the safety factor of column and stiffener plate. Rectangular stiffener plate with cut off a corner (type C) is the best type for supporting the base of traffic sign post column. Cutting of a corner of rectangular stiffener plate results increase of stress in itself but less than maximum stress in traffic sign post column.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"463 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121168675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357633
V. I. Reyzlin, E. A. Tartakovsky
In this paper we consider the possibility of using NVIDIA CUDA technology for the construction of parallel algorithms for solving problems of adaptive optics.
在本文中，我们考虑了使用NVIDIA CUDA技术构建并行算法来解决自适应光学问题的可能性。
{"title":"Solving problems of adaptive optics using parallel algorithms based on the CUDA technology","authors":"V. I. Reyzlin, E. A. Tartakovsky","doi":"10.1109/IFOST.2012.6357633","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357633","url":null,"abstract":"In this paper we consider the possibility of using NVIDIA CUDA technology for the construction of parallel algorithms for solving problems of adaptive optics.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128754058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357612
Ming-song Sun, Wenfu Wu
In recent years, VPN (Virtual Private Network) technology has become one of the most important services in multinational companies around the world because of its security, convenience, real-time and low construction cost. However in traditional VPN technology including overlay VPN (ATM, Frame-Relay) and Peer-to-Peer VPN (IP-routing), more and more disadvantages have emerged such as complex management and implementation, lack of availability and expansibility, customer address-overlapping, etc. Compared to traditional VPN, MPLS VPN (Multi-Protocol Label Switching VPN) is a real good solution and has its own technology features and functions such as FEC, VRF, MPBGP, VPNv4 address and so on to overcome the disadvantages above. In this paper we analyze and research the features and functions of MPLS VPN as well as the weaknesses of traditional VPN mentioned in detail, later a vivid experiment is given to demonstrate the excellent performance of MPLS VPN.
{"title":"Engineering analysis and research of MPLS VPN","authors":"Ming-song Sun, Wenfu Wu","doi":"10.1109/IFOST.2012.6357612","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357612","url":null,"abstract":"In recent years, VPN (Virtual Private Network) technology has become one of the most important services in multinational companies around the world because of its security, convenience, real-time and low construction cost. However in traditional VPN technology including overlay VPN (ATM, Frame-Relay) and Peer-to-Peer VPN (IP-routing), more and more disadvantages have emerged such as complex management and implementation, lack of availability and expansibility, customer address-overlapping, etc. Compared to traditional VPN, MPLS VPN (Multi-Protocol Label Switching VPN) is a real good solution and has its own technology features and functions such as FEC, VRF, MPBGP, VPNv4 address and so on to overcome the disadvantages above. In this paper we analyze and research the features and functions of MPLS VPN as well as the weaknesses of traditional VPN mentioned in detail, later a vivid experiment is given to demonstrate the excellent performance of MPLS VPN.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116103992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357638
Hong Zhang, Xuhui Liu
Coal mine underground work is a high risk of work. To guarantee the safety of miners' life and the positioning of a miner's location exactly on real time are important tasks. ZigBee technique, for its low power consumption, low cost and convenience, is proper to be used in the positioning system for underground coal mine [1]. In this paper, a new positioning algorithm for coal mine underground based on ZigBee technology is proposed, in which NNSS (Nearest Neighboring signal strength) is adopted for preliminary location, and then DTM (dynamic triangular measurement) locating method is employed for precise ranging and position. The system with the algorithm for coal mine enterprises provides personnel tracking, monitoring and other functions [2]. When an accident happens, the system can determine positions of miners and numbers of miners in time, to ensure emergent rescues and guarantee the life safety with high efficiency.
{"title":"A localization algorithm for miners underground of coal mines based on ZigBee technology","authors":"Hong Zhang, Xuhui Liu","doi":"10.1109/IFOST.2012.6357638","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357638","url":null,"abstract":"Coal mine underground work is a high risk of work. To guarantee the safety of miners' life and the positioning of a miner's location exactly on real time are important tasks. ZigBee technique, for its low power consumption, low cost and convenience, is proper to be used in the positioning system for underground coal mine [1]. In this paper, a new positioning algorithm for coal mine underground based on ZigBee technology is proposed, in which NNSS (Nearest Neighboring signal strength) is adopted for preliminary location, and then DTM (dynamic triangular measurement) locating method is employed for precise ranging and position. The system with the algorithm for coal mine enterprises provides personnel tracking, monitoring and other functions [2]. When an accident happens, the system can determine positions of miners and numbers of miners in time, to ensure emergent rescues and guarantee the life safety with high efficiency.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115254813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-26DOI: 10.1109/IFOST.2012.6357523
Andrey Malyshev
For the first time a dielectric hysteresis is observed in a polycrystalline lithium-titanium ferrite in the temperature range 475-575 K. A thermal Barkhausen effect is detected during heating and cooling of ferrite specimens prepolarized in an electric field. The results provide evidence on the formation of properties similar to ferroelectricones in lithium-titanium ferrites under certain conditions.
{"title":"Anomalies of dielectric properties in a lithium-titanium ferrite ceramic","authors":"Andrey Malyshev","doi":"10.1109/IFOST.2012.6357523","DOIUrl":"https://doi.org/10.1109/IFOST.2012.6357523","url":null,"abstract":"For the first time a dielectric hysteresis is observed in a polycrystalline lithium-titanium ferrite in the temperature range 475-575 K. A thermal Barkhausen effect is detected during heating and cooling of ferrite specimens prepolarized in an electric field. The results provide evidence on the formation of properties similar to ferroelectricones in lithium-titanium ferrites under certain conditions.","PeriodicalId":319762,"journal":{"name":"2012 7th International Forum on Strategic Technology (IFOST)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115521168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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