Essays about: "mechanical vibrations"

Showing result 21 - 25 of 58 essays containing the words mechanical vibrations.

  1. 21. High Temperature Tribology in Hot Stamping

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Evan Kurnia; [2019]
    Keywords : high temperature tribology; hot stamping; acoustic emission; condition monitoring; hardfacing;

    Abstract : Many automotive components are made of Al-Si coated ultra-high strength boron steel (UHSS) and are produced by hot stamping process. In this process, the workpiece is heated to an austenitizing temperature and is then formed and quenched simultaneously between the tools to achieve the desired shape and high strength. READ MORE

  3. 22. Remote control of mechanical rat traps based on vibration and audio sensors

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Denis Solak; Amin Storani; [2019]
    Keywords : Technology and Engineering;

    Abstract : The main aim with this master’s thesis was to study the possibilities of detecting an event (rat trap going off) by analyzing audio streams from a MEMS (micro-electromechanical systems) microphone or movement patterns from a MEMS accelerometer. To achieve this goal, a small, power efficient and cost efficient embedded system was built with the help of a development board, a MEMS accelerometer, a MEMS microphone and a metal box where the equipment and the rat traps were placed and positioned. READ MORE

  4. 23. Vibration analysis of a fast response brushless excitation system

    University essay from Uppsala universitet/Elektricitetslära

    Author : Emma Pålsson; [2019]
    Keywords : vibrations; frequency analysis; FRBE; controlled rectification; hydropower; exciter; generator; fast response;

    Abstract : The aim of this study is to measure and analyze vibrations on a fast response brushless exciter (FRBE) at a real hydropower plant and identify vibration origins through frequency analysis. Moreover, the observed vibrations are evaluated in relation to generator vibration standards and estimated tangential eigenfrequencies of the studied FRBE. READ MORE

  5. 24. Semi-active suspension seats in High speed crafts

    University essay from KTH/Marina system

    Author : Victor Ekström; [2019]
    Keywords : ;

    Abstract : The working environment of a high-speed-craft (HSC) can be uncomfortable and hazardous for the crew and passengers on board. This due to the repeated exposure to high levels of vibration and shocks, that can lead to reduced performance and severe injuries to the back and neck. READ MORE

  6. 25. Vibration Testing of Short Fibre Reinforced Polymer Composites

    University essay from KTH/Lättkonstruktioner

    Author : Ben Morrissey; [2019]
    Keywords : ;

    Abstract : Applications of short fibre reinforced polymer composites (SFRPCs) have been rapidly increasing and most of the components made of these materials are subjected to cyclic loading. In automotive applications, “under the hood” is the harshest environmental condition for plastic-based materials with temperatures ranging from -40°C to 120°C. READ MORE