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Role of compositional changes on thermal,magnetic,and mechanical properties of Fe-P-C-based amorphous alloys

Chinese Physics B 2022年第1期31卷 472-479页

作者： Indah Raya Supat Chupradit Mustafa M Kadhim Mustafa Z Mahmoud abduladheem turki jalil Aravindhan Surendar Sukaina Tuama Ghafel Yasser Fakri Mustafa Alexander N Bochvar Chemistry Department Faculty of Mathematics and Natural ScienceHasanuddin UniversityMakassarSouth Sulawesi90245Indonesia Department of Occupational Therapy Faculty of Associated Medical SciencesChiang Mai UniversityChiang Mai50200Thailand Department of Dentistry Kut University CollegeKutWasit52001Iraq College of Technical Engineering The Islamic UniversityNajafIraq Department of Pharmacy Osol Aldeen University CollegeBaghdadIraq Department of Radiology and Medical Imaging College of Applied Medical SciencesPrince Sattam Bin Abdulaziz UniversityAl-Kharj 11942Saudi Arabia Faculty of Health University of CanberraCanberraACTAustralia Faculty of Biology and Ecology Yanka Kupala State University of Grodno230023 GrodnoBelarus Department of Pharmacology Saveetha Dental College and HospitalSaveetha Institute of Medical and Technical SciencesChennaiIndia Scientific Research Center Al-Ayen UniversityThi-Qar64001Iraq Department of Pharmaceutical Chemistry College of PharmacyUniversity of MosulMosulIraq Department of Materials Physics Eotvos Lorand UniversityPázmány Péter sétány 1/ABudapest1117Hungary

This work aimed to tune the comprehensive properties of Fe-P-C-based amorphous system through investigating the role of microalloying process on the crystallization behavior,glass forming ability(GFA),soft magnetic features,and mechanical *** minor addition of elements into the system,it was found that the simultaneous microalloying of Ni and Co leads to the highest GFA,which was due to the optimization of compositional heterogeneity and creation of near-eutectic ***,the FeCoNiCuPC amorphous alloy exhibited the best anelastic/viscoplastic behavior under the nanoindentation test,which was owing to the intensified structural fluctuations in the ***,the improved plasticity by the extra Cu addition comes at the expense of magnetic properties,so that the saturation magnetization of this alloying system is significantly decreased compared to the FeCoPC amorphous alloy with the highest soft magnetic *** total,the results indicated that a combination of added elemental constitutes,i.e.,Fe69Co5Ni5Cu1P13C7 composition,provides an optimized state for the comprehensive properties in the alloying system.

关键词： Fe-based alloy saturation magnetization glass forming ability viscoplastic

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Improving the transition capability of the low-voltage wind turbine in the sub-synchronous state using a fuzzy controller

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Clean Energy 2022年第4期6卷 682-692页

作者： Ngakan Ketut Acwin Dwijendra abduladheem turki jalil Azher MAbed Bashar SBashar Ahmed Kateb Jumaah Al-Nussairi Ali Thaeer Hammid Ali Shamel Khusniddin Fakhriddinovich Uktamov Faculty of Engineering Udayana UniversityBaliIndonesia80361 Faculty of Biology and Ecology Yanka Kupala State University of Grodno230023 GrodnoBelarus College of Technical Engineering The Islamic UniversityNajafIraq Department of Air Conditioning and Refrigeration Al-Mustaqbal University CollegeBabylonIraq Al-Nisour University College BaghdadIraq Al-Manara College for Medical Sciences MaysanIraq Computer Engineering Techniques Faculty of Information TechnologyImam Ja’afar Al-Sadiq UniversityBaghdadIraq Department of Chemistry Ardebil BranchIslamic Azad UniversityArdebilIran ‘Economic Security’Department Tashkent State University of EconomicsTashkent CityUzbekistan

The main problem of wind turbines is associated with induction generators in their power supply during short circuits in the *** this research,a new method is presented for the uninterrupted operation of a wind turbine equipped with an induction generator fed on both sides of feeding during network *** farms equipped with a doubly-fed induction generator(DFIG)require two abilities to allow system operators to increase *** capabilities include fault ride-through and synchronization of output force fluctuations,especially when these generators generate significant electrical power.A MATLAB®software environment has been used to evaluate and improve the performance of these turbines.A fuzzy complement(FC)controller is used to improve the performance of the *** results demonstrate that this controller limits the operation of the turbine current and voltage in the short-circuit mode *** results obtained from comparing two different modes,it can be said that ripple is 4%in the FC mode,while this parameter is equal to 10%for the proportional-integral controller.

关键词： wind turbine sub-synchronous performance fuzzy controller MATLAB

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Application of Vortex Generators to Remove Heat Trapped in Closed Channels

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Fluid Dynamics & Materials Processing 2023年第1期19卷 15-24页

作者： Alim Al Ayub Ahmed Salim Oudah Mezan Binyamin Murtadha Doghiam Abdullah Elena Tesleva Linar G.Akhmetov Rustem Zalilov Mustafa M.Kadhim abduladheem turki jalil School of Accounting Jiujiang UniversityJiujiang332000China General Directorate of Education in Al-Muthanna Governorate Ministry of EducationSamawah66001Iraq Department of Mechanical Engineering Faculty of Science and TechnologyUniversitas Muhammadiyah Kalimantan TimurSamarinda75124Indonesia College of Petroleum Engineering Al-Ayen UniversityThi-Qar64001Iraq National Research Tomsk Polytechnic University Tomsk634050Russia Kazan Federal University Kazan420008Russian Nosov Magnitogorsk State Technical University Magnitogorsk455000Russia Department of Dentistry Kut University CollegeKutWasit52001Iraq College of Technical Engineering The Islamic UniversityNajaf7003Iraq Department of Pharmacy OsolAldeen University CollegeBaghdad993P+PWXIraq Faculty of Biology and Ecology Yanka Kupala State University of GrodnoGrodno230023Belarus

The utilization of vortex generators to increase heat transfer from cylinders installed inside a duct is *** particular,a channel containing eight cylinders with volumetric heat sources is considered for different values of the Reynolds *** effective possibility to use vortex generators with different sizes to increase heat transfer and,consequently,reduce the surface temperature of the cylinders is ***,the amount of pressure drop inside the channel due to the presence of vortex generators is considered and compared with the cases without vortex *** results show that although the addition of generators increases the pressure drop,it strongly contributes to increase the heat transfer coefficient inside the duct(up to 80–90%).

关键词： Vortex generators heat trapped temperature of hot surfaces heat transfer

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