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Articles 1 - 7 of 7
Full-Text Articles in Engineering
Thin Strip Profile Control Capability Of Roll Crossing And Shifting In Cold Rolling Mill, Abdulrahman Aljabri, Zhengyi Jiang, Dongbin Wei, Xiaodong Wang, Hassan Tibar
Thin Strip Profile Control Capability Of Roll Crossing And Shifting In Cold Rolling Mill, Abdulrahman Aljabri, Zhengyi Jiang, Dongbin Wei, Xiaodong Wang, Hassan Tibar
Abdulrahman Daifullah Aljabri
Controlling cold strip profile is a difficult and significant problem has been found in industry during thin strip rolling. At present choosing the new type of strip rolling mill is the one of main methods to control the strip shape quality in cold rolling. The influences of rolling process parameters such as the work roll cross angle and work roll shifting on the strip shape and profile of thin strip are recognised throughout this study. The results show that the roll crossing and shifting is efficient way to control the strip shape. The increase of the work roll crossing angle …
Use Of The Soil Modulus For Compaction Control Of Compacted Soils, Ana Heitor, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Use Of The Soil Modulus For Compaction Control Of Compacted Soils, Ana Heitor, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Buddhima Indraratna
Insufficient compaction conditions can cause significant roadway infrastructure maintenance costs. Conventional compaction control, using nuclear methods, is based on the discrete in situ determination of the dry density and moisture content. Recently, there has been an increase interest in alternative methods for compaction control using intelligent compaction technologies. This method enables the continuous measurement of the soil modulus and the degree of compaction on the layer that is being compacted. Thus, the efficiency of the compaction process can be maximized. Although the adoption of this method is very promising, it constitutes a change of project specification for the contractors (i.e. …
Reaction Method Control Of Impurity Scattering In C-Doped Mgb2: Proving The Role Of Defects Besides C Substitution Level, S K. Chen, K Y. Tan, A S. Halim, X Xu, K S. B De Silva, W K. Yeoh, S X. Dou, A Kursumovic, J L. Macmanus-Driscoll
Reaction Method Control Of Impurity Scattering In C-Doped Mgb2: Proving The Role Of Defects Besides C Substitution Level, S K. Chen, K Y. Tan, A S. Halim, X Xu, K S. B De Silva, W K. Yeoh, S X. Dou, A Kursumovic, J L. Macmanus-Driscoll
Shi Xue Dou
In this study, Si and C were incorporated into polycrystalline MgB2 via in situ reaction of Mg and B with either SiC or with separate Si and C (Si+C). The electrical transport and magnetic properties of the two series of samples were compared. The corrected resistivity at 40K, pA(40K), is higher for the SiC reacted samples regardless of carbon (C) substitution level, indicating larger intragrain scattering because of the simultaneous reaction between Mg and SiC and carbon substitution during the formation of MgB2. In addition, because of the cleaner reaction route for the SiC reacted samples, the calculated active area …
Maritime Traffic Management: A Need For Central Coordination?, Fulko Van Westrenen, Gesa Praetorius
Maritime Traffic Management: A Need For Central Coordination?, Fulko Van Westrenen, Gesa Praetorius
Gesa Praetorius
Traffic management is not formally organised in the maritime domain. Ships are autonomous and find their own way. Traffic is organised through rules, regulations, and “good seamanship”; it is a distributed system. In areas of high traffic-density support is proved by vessel traffic service (VTS) to promote traffic safety and fluency. VTS does not take control. This organisational structure has proven itself in situations with sufficient resources. When resources become insufficient (e.g. not enough sailing space), the traffic needs an organising mechanism. In this article, the authors argue that the most promising way to do this is by organising centralised …
Effect Of Using Adjusted Parameters, Local And Global Optimums, For Phase Equilibrium Prediction On The Synthesis Of Azeotropic Distillation Columns, Claudia Gutierrez-Antonio, Andrea Ojeda-Gasca, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernández, Abel Briones-Ramírez
Effect Of Using Adjusted Parameters, Local And Global Optimums, For Phase Equilibrium Prediction On The Synthesis Of Azeotropic Distillation Columns, Claudia Gutierrez-Antonio, Andrea Ojeda-Gasca, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernández, Abel Briones-Ramírez
Adrian Bonilla-Petriciolet
We analyze the effect of using adjusted parameters, corresponding to local and global optimums, in the NRTL thermodynamic model on the complete process synthesis (design, optimization and control) of homogeneous azeotropic distillation columns. The adjusted parameters that corresponding to a global optimum were obtained with simulated annealing technique, while the adjusted parameters that corresponding to a local optimum were taken from Dechema Collection. Both sets of parameters were used to design a conventional sequence, a side-stream column and a Petlyuk sequence. These designs were used as initial solution to a multiobjective genetic algorithm with constraints handling, coupled to a processes …
Situation Awareness And Maritime Traffic: Having Awareness Or Being In Control?, Fulko Van Westrenen, Gesa Praetorius
Situation Awareness And Maritime Traffic: Having Awareness Or Being In Control?, Fulko Van Westrenen, Gesa Praetorius
Gesa Praetorius
Situation awareness (SA) is generally seen as a mental representation of the system state, an objective measure of the ‘situation out there’. In this article, the authors make an argument that SA can only have a meaning in relation to the task of the user and characteristics of the system. This will be argued with the help of a specific environment: vessel traffic monitoring. The long-time constants and the complex constraints imposed on the ship require that the operator monitoring the traffic has a good SA: the operator must make long-term predictions about possible traffic developments. For this, being in …
Wind Power Electric Systems: Modelization, Control And Optimization, Djamila Rekioua Pr
Wind Power Electric Systems: Modelization, Control And Optimization, Djamila Rekioua Pr
REKIOUA Djamila Dr
The book is organized through seven chapters as follows: • Chapter 1 is intended as an introduction to the subject. It defines the wind process, introduces the main meteorological elements, the wind velocity, and presents an overview of wind systems (stand-alone systems and grid connected systems). This chapter includes also pre-sizing and maintenance of wind systems. • Chapter 2 focuses on wind energy conversion and power electronics modeling. The different structures of converters used in wind systems are presented. Some applications are given under Matlab/Simulink. • In Chapter 3, a detailed review on the most used algorithms to track the …