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72 articles for “Mechanical Systems”

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Research ArticleOpen accessIn the abstractStochastic Prognostic Paradigm for Petrochemical Pipelines Subject to FatigueAbdo Abou Jaoude, Khaled El-TawilThe most important aim for industrialists is the prevention and the evaluation of their products state since non-predicted failure is very expensive in some cases. This can be done mainly by the evaluation of the &#34Remaining Useful Lifetime&#34 (RUL) by the means of prognostic approaches compensating the inconveniences of classical maintenance strategies. A proposed analytic prognostic methodology based on damage … …American Journal of Engineering and Applied Sciences, Vol. 6, Issue 2 · 15 Apr 2013 · 7,561 accessesView PDFCite
Research ArticleOpen accessIn the abstractMethodical Tuning of Proportional Plus Integral Controllers for Cascade Control of Separately Excited DC MotorsIbrahim Al-AbbasThe cascade control of DC motors by PI controllers was extensively used in industry. Approximation rules based on plotting the output of the system or on computer simulation were used to determine the parameters of these controllers. This study was done to develop mathematical expressions to calculate the parameters of these controllers. Output time functions of the system and there … …American Journal of Applied Sciences, Vol. 9, Issue 11 · 12 Sep 2012 · 7,013 accessesView PDFCite
Research ArticleOpen accessIn the abstractAdvances in Electromyogram Signal Classification to Improve the Quality of Life for the Disabled and Aged PeopleMd. R. Ahsan, Muhammad I. Ibrahimy, Othman O. KhalifaProblem statement: The social demands for the Quality Of Life (QOL) are increasing with the exponentially expanding silver generation. To improve the QOL of the disabled and elderly people, robotic researchers and biomedical engineers have been trying to combine their techniques into the rehabilitation systems. Various biomedical signals (biosignals) acquired from a specialized tissue, organ, or cell system like the … …Journal of Computer Science, Vol. 6, Issue 7 · 31 Jul 2010 · 8,817 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign and Simulation of Microelectromechanical System Capacitive Shunt SwitchesHaslina Jaafar, Othman Sidek, Azman Miskam, Shukri KorakkottilProblem statement: RF MEMS switch is one of MEMS area that creates devices that have great potential to improve the performance of communication circuits and systems and enables the realization of micro size mechanical switches embedded in electronics devices. The low voltage switches are necessary due to their compatibility of standard IC technology in RF application and microelectronics systems. In … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,718 accessesView PDFCite
Research ArticleOpen accessIn the abstractReduced Order Models of a Current Source Inverter Induction Motor DriveIbrahim K. Al-AbbasProblem Statement: The current source inverter induction motor (CSI-IM) drive was widely used in various industries. The main disadvantage of this drive was nonlinearity and complexity. This work was done to develop a simple drive systems models. Approach: The MATLAB/SIMULINK software was used for system modeling. Three reduced models were developed by choosing specific frame, neglecting stator transients and ignoring … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 7,869 accessesView PDFCite
Research ArticleOpen accessIn the abstractCurrent Stage in the Field of Mechanisms with Gears and RodsRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.The development and diversification of machines and mechanisms with applications in all fields require new scientific researches for the systematization and improvement of existing mechanical systems by creating new mechanisms adapted to modern requirements, which involve increasingly complex topological structures. The modern industry, the practice of designing and building machinery is increasingly based on the results of scientific and applied … …Journal of Mechatronics and Robotics, Vol. 1, Issue 2 · 13 Dec 2017 · 6,852 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeometry Modification of Flywheels and its Effect on Energy StorageShenel Bankston, Changki MoThis paper examines the influence of various geometric configurations of flywheels on kinetic energy storage performance using finite element analysis. Historically flywheels have been used in various applications. From such applications as pottery wheels to steam engines, flywheels have been used to store mechanical energy. Currently, in the ever expanding world of green energy development, flywheel energy storage systems provide … …Energy Research Journal, Vol. 6, Issue 2 · 28 Sep 2015 · 8,419 accessesView PDFCite
Research ArticleOpen accessIn the abstractDegradation of Power Generation Performance due to Effects of Various Ice Shapes and Accretions on Wind Turbine BladesAditya Bagade, Changki Mo, Abdelhamid MazherIn today’s world, green energy has become a key initiative as an alternative energy resource. Wind turbines are widely used to harvest wind energy in seasonal and cold environments. Although efficient, cold weather conditions negatively affects wind turbine operations due to ice formation. Damage from icing is seen on blade-tips when super-cooled water droplets that form in colder environments rapidly … …Energy Research Journal, Vol. 6, Issue 2 · 11 Sep 2015 · 7,818 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Process of Porous Tantalum Implants Osseous Integration a ReviewChristos G. Paganias, George A. Tsakotos, Stephanos D. Koutsostathis, George A. MacherasPorous tantalum is a biomaterial that was recently introduced in orthopaedics in order to overcome problems of the past related to implant loosening. Its use has led to very good results, especially in difficult cases where severe bone defect is present, as it is found to have osteoconductive and possibly, osteoinductive properties. So, it is of great interest to shed … …Current Research in Medicine, Vol. 5, Issue 2 · 22 Apr 2015 · 7,849 accessesView PDFCite
Research ArticleOpen accessIn the abstractTHE USAGE OF ANIMAL AND VEGETABLE ORIGIN RAW MATERIALS COMBINATORICS IN MEAT PRODUCTS OF &#34HALAL&#34 CATEGORY DEVELOPMENTIvan F. Gorlov, Oksana B. Gelunova, Tatiana M. Giro, Ekaterina P. MirzayanovaIntegrated researches aimed to develop technologies and recipes for meat products of &#34Halal&#34 category using seed fat and Milk Protein-Carbohydrate Concentrate (MPCC) represent a new generation of scientific and practical interest. In this connection, the authors propose technologies and recipes for meat products of &#34Halal&#34 category, designed on the basis of rational combinatorics of animal and vegetable origin raw materials, … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 4 · 15 Oct 2014 · 7,654 accessesView PDFCite