Sökning: "Mihai Nicolescu"

Visar resultat 11 - 15 av 23 avhandlingar innehållade orden Mihai Nicolescu.

  1. 11. Joint Interface Effects on Machining System Vibration

    Författare :Qilin Fu; Cornel-Mihai Nicolescu; Tomas Beno; KTH; []
    Nyckelord :Joint Interface; Vibration; Damping; Chatter; Machining; Carbon NanoComposite; PECVD; HiPIMS; SRA - Production; SRA - Produktion; Järnvägsgruppen - Ljud och vibrationer; Järnvägsgruppen - Ljud och vibrationer;

    Sammanfattning : Vibration problems are still the major constraint in modern machining processes that seek higher material removal rate, shorter process time, longer tool life and better product quality. Depending on the process, the weaker structure element can be the tool/tool holder, workpiece/fixture or both. LÄS MER

  3. 12. Process Control and Simulation of Ferromagnetic Strip in the Power Transformers and Electrical Machines Applications : Electric power systems

    Författare :Kourosh Mousavi Takami; Jafar Mahmoudi; Örjan Danielsson; Mihai Nicolescu; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strip; electrical machines; transformer; cold rolling mills; process; automation; control; Band; elektriska maskiner; transformatorer; kallvalsningsverk; processautomation; reglerteknik; Electric power engineering; Elkraftteknik; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : This thesis investigates optimization of the control of electrical and thermal equipment by using FEM and CFD modeling in combination with dynamic simulation models. The thesis focuses on the production of electrical strips and the control system with the aim of reducing losses and improving magnetic properties. LÄS MER

  4. 13. Investigation Cooling and Lubrication Strategies for Sustainable Machining of Titanium Alloys

    Författare :Salman Pervaiz; Cornel Mihai Nicolescu; Ibrahim Sadik; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Titanium alloys; Machinability; Energy consumption; Production Engineering; Industriell produktion;

    Sammanfattning : The manufacturing sector is one of the most rapidly growing sectors in the industrialized world today. Manufacturing industry is concerned with being more competitive and profitable. LÄS MER

  5. 14. Numerical and Experimental Investigations of the Machinability of Ti6AI4V : Energy Efficiency and Sustainable Cooling/ Lubrication Strategies

    Författare :Salman Pervaiz; Cornel Mihai Nicolescu; Hazim El-Mounayri; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Titanium alloys; Energy consumption; Wear mechanisms; Finite element analysis; computational fluid dynamic analysis; Production Engineering; Industriell produktion;

    Sammanfattning : Titanium alloys are widely utilized in the aerospace, biomedical,marine, petro-chemical and other demanding industries due to theirdurability, high fatigue resistance and ability to sustain elevateoperating temperature. As titanium alloys are difficult to machine, dueto which machining of these alloys ends up with higher environmentalburden. LÄS MER

  7. 15. On passive and active control of machining system dynamics : analysis and implementation

    Författare :Amir Rashid; Cornell Mihai Nicolescu; Drogos A. Axinte; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; machining system; chatter; productivity; palletised workholding; damping; tuned viscoelastic damper; Manufacturing engineering; Produktionsteknik;

    Sammanfattning : .... LÄS MER