Sökning: "characterisation factor"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden characterisation factor.

  1. 1. Characterisation of an Additively Manufactured Self-Sensing Material Using Carbon Fibre Sensors

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Alain Williamson; [2023]
    Nyckelord :Additive Manufacturing; Self-Sensing Material; Carbon Fibre Sensors; Structural Health Monitoring; Space Applications; 3D-Printed Continuous Carbon Fibre Filament; Strain Sensor; Mechanical Properties; Electromechanical Properties; Tensile Strength; Failure Strain; Base Resistance; Gauge Factor; Linearity; Systematic Literature Review; Material Selection; Mechanical Design; Material Development; Feasibility Study;

    Sammanfattning : Increasing demand for structural health monitoring in space highlights the need to make the creation of these systems more accessible. This study investigates the potential of additive manufacturing to achieve this goal by characterizing a self-sensing material made of a commercially available 3D-printed continuous carbon fibre filament. LÄS MER

  3. 2. Characterisation of Ionic Liquid doped Polybenzimidazole Membranes for Application in High-Temperature Proton Exchange Membrane Fuel Cells

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Adam Jacobsson Trönndal; [2023]
    Nyckelord :Fuel cells; Phosphoric acid; Polybenzimidazole; PA-PBI; Ionic liquid; IL; High temperature proton exchange membrane fuel cell; HT-PEMFC; Electrochemical impedance spectroscopy; EIS; IL-PBI; Chemical engineering; Technology and Engineering;

    Sammanfattning : In this study four membranes were tested and evaluated against each other for use in high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications. A phosphoric acid (PA) doped polybenzimidazole (PBI) membrane, was used as a reference as the current state-of-the-art. LÄS MER

  4. 3. Phase and Interface Design in Potential Earth-Abundant Multi-Component Photocatalysts

    L3-uppsats, Lunds universitet/Kemiska institutionen

    Författare :David Llorens Rauret; [2022]
    Nyckelord :Facet control; in-situ TEM; nanoparticle heterostructures; phase transformation; transition metal phosphides; inorganic nanomaterials; Chemistry;

    Sammanfattning : Transition metal phosphides are low-cost, earth-abundant semiconductors with promising properties for photocatalysis, including water-splitting. When combined with other semiconductors or noble metals in nanoparticles, their photocatalytic performance can be drastically enhanced. LÄS MER

  5. 4. Principal Component Analysis for STEM-EDS images: Optimal collection parameters

    Kandidat-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Isac Lazar; [2020]
    Nyckelord :Principal Component Analysis; PCA; STEM; data analysis; machine learning; metal machining; materials; materials chemistry; materialkemi; Technology and Engineering;

    Sammanfattning : STEM-EDS is a common technique used for compositional mapping in materials. The vasts amounts of raw data produced by STEM EDS is suitable for advanced analysis using methods in unsupervised machine learning. One powerful method is Principal Component Analysis (PCA) which can automatically discover significant chemical correlations in a sample. LÄS MER

  7. 5. Unified theory and experimental approach for measuring restricted diffusion and water exchange

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Arthur Chakwizira; [2020]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Fifteen million people lose their lives to stroke and cancer every year. This amounts to one in every four deaths worldwide, making these among the deadliest diseases affecting humankind. Fruitful attempts at containing stroke- and cancer-related mortality hinge on early detection. LÄS MER