Sökning: "Non destructive technologies"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden Non destructive technologies.

  1. 1. Decision framework for maintenance activities in water pipelines: repair or replace? : A literature review and a decision framework proposal

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Letty Fiorella Mora Chirito; [2023]
    Nyckelord :;

    Sammanfattning : The research provides a tool for decision making concerning maintenance activities in water pipelines. The thesis aims to bring attention to the fact that use of modern and faster non-destructive technologies can improve conventional maintenance strategies as long as the results can be interpreted. LÄS MER

  3. 2. Battery Capacity Prediction Using Deep Learning : Estimating battery capacity using cycling data and deep learning methods

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens universitet/Framtidens energi

    Författare :Josefin Rojas Vazquez; [2023]
    Nyckelord :Battery management system; Lithium-ion batteries; battery degradation mechanisms; battery cycle life; Electrical impedance spectroscopy; Capacity estimation; Incremental capacity analysis; Deep learning models; Equivalent circuit model; Long short-term memory; Feedforward neural network; Conventional neural network; multi-channel data; Incremental capacity analysis;

    Sammanfattning : The growing urgency of climate change has led to growth in the electrification technology field, where batteries have emerged as an essential role in the renewable energy transition, supporting the implementation of environmentally friendly technologies such as smart grids, energy storage systems, and electric vehicles. Battery cell degradation is a common occurrence indicating battery usage. LÄS MER

  4. 3. Simulation of Quantum Cascade Lasers

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Zakaria Mohamed; [2023]
    Nyckelord :Quantum Cascade Lasers; Simulations; Numerical Methods; Computational Models; Heterostructures; Physics and Astronomy;

    Sammanfattning : This thesis aimed to contribute to the improvement of Quantum Cascade Lasers (QCLs) by focusing on the effective determination of quantum levels in these devices. The current method relies on an outdated Fortran code, which poses challenges when integrating into optimization schemes. LÄS MER

  5. 4. The use of hyperspectral sensors for quality assessment : A quantitative study of moisture content in indoor vertical farming

    Master-uppsats, Mälardalens universitet/Akademin för innovation, design och teknik

    Författare :Arezo Ahaddi; Zeineb Al-Husseini; [2023]
    Nyckelord :Hyperspectral Imaging; lettuce; moisture content; NIR; near-infrared spectroscopy; shelf life; quality assessment; vertical farming; MicroNIR;

    Sammanfattning : Purpose: This research will study how hyperspectral sensoring can assess the moisture content of lettuce by monitoring its growth in indoor vertical farming. Research questions: “What accuracy can be achieved when using hyperspectral sensoring for assessing the moisture content of lettuce leaves grown in vertical farming?” “How can vertical farming contribute to sustainability in conjunction with integration of NIR spectroscopy?” Methodology: This study is an experimental study with a deductive approach in which experiments have been performed using the hyperspectral technologies singlespot sensor and the hyperspectral camera Specim FX17 to collect spectral data. LÄS MER

  7. 5. Gasket Quality Control

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Chinthan Rai; Shashank Bhanuprakash; [2021]
    Nyckelord :Quality-control; Gasketed plate heat exchangers GPHE ; Cross-section measurement; Laser line triangulation LLT ; Blue laser; Handheld 3D scanning; MCDM; AHP.; Technology and Engineering;

    Sammanfattning : The heat exchanger is a system where heat gets transferred between oil and other forms of lubricants from one system to another without mixing through conduction. The hot liquid is cooled by passing through the heat exchangers plates, which act as a wall between them. LÄS MER