Sökning: "resonance frequencies"

Visar resultat 21 - 25 av 84 uppsatser innehållade orden resonance frequencies.

  1. 21. Comparative Study of Vision Camera-based Vibration Analysis with the Laser Vibrometer Method

    Master-uppsats, KTH/Industriell produktion

    Författare :Pradeep Kumar Muralidharan; Hemanth Yanamadala; [2021]
    Nyckelord :OpenCV; Motion tracking; motion magnification; vision camera method; FFT; tracker; OpenCV; Rörelsesspårning; Rörelseförstoring; Synkamera -metod; FFT; Spårare;

    Sammanfattning : Vibration analysis is a method that studies patterns in vibration data and measures vibration levels. It is usually performed on time waveforms of the vibration signal directly and on thefrequency spectrum derived by applying the Fourier Transform on the time waveform. LÄS MER

  3. 22. HVDC transformer core resonance calculation

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Axel Thorstrand; [2021]
    Nyckelord :HVDC; High Voltage Direct Current; Transformer core; Natural frequencies; Energy method-based equation; HVDC; Högspänning likström; Transformatorkärna; Naturliga frekvenser; Energimetod;

    Sammanfattning : Transformers emit a characteristic humming noise due to magnetostriction which is the continuous change in dimensions during magnetization. The noise is amplified if the induced frequencies match the core’s natural frequencies, consequently avoiding geometries that create resonance is critical in order to fulfill customer sound level requirements. LÄS MER

  4. 23. Numerical and Experimental Modal Analysis of CNC Machine

    Master-uppsats, Blekinge Tekniska Högskola

    Författare :Pacifique Uwajambo; Nisha Thakur; [2021]
    Nyckelord :;

    Sammanfattning : Numerical and Experimental Modal Analysis of RAW CNC milling machine was performed in this project. The RAW CNC machine's lightweight, easy assembling, and operation features make it a good choice for hobbyists and professionals. LÄS MER

  5. 24. Refined model for calculating the dynamic amplification factor for road bridges

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Jens Bergenudd; [2020]
    Nyckelord :Dynamics; Dynamic amplification factor; Dynamic impact factor; Platooning; Soil-structure interaction; Vehicle-bridge interaction; Technology and Engineering;

    Sammanfattning : The objective of the thesis is to simulate and evaluate vehicle-bridge interaction (VBI) due to road surface irregularities and soil-structure interaction (SSI) with different vehicle models and suspension properties. Parameter studies will be carried out for integral and slab bridges. LÄS MER

  7. 25. Field uniformity and isotropy investigation of Halmstad University's reverberation chamber : In collaboration with Halmstad University and Ericsson AB, Lund

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Khaled Ads; [2020]
    Nyckelord :Reverberation chamber;

    Sammanfattning : This thesis is the final module of the Master's program in Electronics Design at Halmstad University. The Master Thesis work is a part of an ongoing development of Halmstad University's reverberation chamber (RC), which is aimed at frequencies in the low GHz range. The development process has been passing in several phases. LÄS MER