Sökning: "PTFE"

Visar resultat 1 - 5 av 24 uppsatser innehållade ordet PTFE.

  1. 1. Test and Calibration of CUBES: a CubeSat X-ray Detector

    Master-uppsats, KTH/Fysik

    Författare :Caroline Holmberg; [2022]
    Nyckelord :Applied Physics; Astroparticle Physics; Tillämpad fysik; Astropartikelfysik;

    Sammanfattning : CUBES is an X-ray detector that will be placed aboard the KTH 3U CubeSat mission, MIST. Its purpose is to detect high energy X-rays as well as to test various components in a space environment. Two CUBES will be placed on the satellite. Each CUBES consists of a printed circuit board (PCB) with three multi pixel photon counters (MPPCs). LÄS MER

  3. 2. A study of the triboelectricity of 2D materials: MoS2, WS2 and MoO3 : Analyzing measurements from a triboelectric nanogenerator

    Kandidat-uppsats, Mittuniversitetet/Institutionen för naturvetenskap

    Författare :Simon Kilman; [2022]
    Nyckelord :2D-material; MoS2; WS2; MoO3; triboelektrisk nanogenerator; TENG; triboelektrisk effekt; triboelektrisk serie; kontaktelektrifiering.;

    Sammanfattning : Detta projekts mål har varit att undersöka tre olika 2D-materials triboelektriska egenskaper och därmed placera dem i en triboelektrisk serie. Detta utfördes genom att använda en triboelektrisk nanogenerator (TENG) och mäta den resulterande spänningen. Tio stycken motmaterial applicerades mot varje 2D-material på nanogeneratorn. LÄS MER

  4. 3. Preparation and Experimental Investigation of the Tribological Properties of Conductive Grease Containing Ionic Liquids

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Gabriella Johansson Segervall; [2022]
    Nyckelord :Ionic liquids; bearing current; tribology; conductive grease;

    Sammanfattning : This thesis project was executed at ABB AB. The purpose of the thesis was to formulate aselection of ionic liquids with different thickeners as greases and experimentally understand thetribological characteristics and electrical properties. LÄS MER

  5. 4. Design of a filament fuser : Reducing 3D-printer filament waste

    Magister-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Omar Kanbour; [2022]
    Nyckelord :3D-printer; splicing filament; firmware; sustainability; mechatronics; 3D-printer; filamentsvetsning; mjukvara; hållbarhet; Mekatronik;

    Sammanfattning : There has been a significant rise of users in the 3D-printer community. A common dilemma amongst users is how to handle spools of plastic filament that does not contain enough filament for an arbitrary print. LÄS MER

  7. 5. A 3D sliding bearing finite element based on the Bouc-Wen model : Implementation in Abaqus

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Rémi Lantoine; [2020]
    Nyckelord :Railway bridge; dynamics; resonance; sliding bridge bearings; finite element; Abaqus; friction; steel; Teflon; PTFE; Bouc-Wen model; friction coefficient; temperature; heating;

    Sammanfattning : As rail transportation is significantly more virtuous than airplanes or cars in terms of greenhousegases emissions, its development is being encouraged in several European countries, includingSweden. In addition, the development of railway lines on which trains can travel at higher speeds ismade in Sweden with the integration of existing infrastructure. LÄS MER