Sökning: "Acoustic emission"

Visar resultat 1 - 5 av 35 uppsatser innehållade orden Acoustic emission.

  1. 1. A Machine Learning Approach to Skin Cancer Delineation on Photoacoustic Imaging

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

    Författare :Alice Fracchia; [2023]
    Nyckelord :Skin cancer; carcinoma; photoacoustic imaging; ultrasound imaging; machine learning; dimensionality reduction; sandpiles algorithm; active contour; multilayer perception MLP ; convolutional neural networks CNN ; autoencoder; Physics and Astronomy;

    Sammanfattning : Skin cancer is a growing public health concern due to its prevalence among the population. Current clinical procedures require high invasiveness and multiple surgeries, which are responsible for patient discomfort and high medical expenses. LÄS MER

  3. 2. Acoustic Characterization of Catalyst

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Surachit Dokson; [2023]
    Nyckelord :;

    Sammanfattning : The WHO has set a sound level threshold of 55 dB, beyond which noise is considered harmful to humans when exposed for an extended period of time. It is, however, estimated by the European Environmental Agency that over 110 million people in the EU are regularly exposed to levels of traffic noise above 55 dB. LÄS MER

  4. 3. Konceptmätsystem i en Husqvarna motorsåg : Utveckling och design för integrering av mätsystem i en 540 iXP motorsåg

    M1-uppsats,

    Författare :Lucas Andersson; Sara Heikkilä; [2023]
    Nyckelord :Produktutveckling; integrering; AE-sensor;

    Sammanfattning : Denna rapport genomgår ett produktutvecklingsarbete för Husqvarna genom ett examensarbete på Jönköpings Tekniska Högskola. Projektet var att integrera ett datainsamlingssytem (H-DAS), Akustisk emissions sensor (AE-sensor) samt en display in i motorsågen 540 iXP. LÄS MER

  5. 4. Modulation of the optical properties of quantum dots by surface acoustic waves

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Tanguy Schetelat; [2023]
    Nyckelord :Nanophotonics; Quantum dots; Surface acoustic waves; Interdigital tansducers; Optomechanical coupling; Nanofotonik; Kvantprickar; Akustika yt-vågor; Interdigital tansducers; Optomekanisk koppling;

    Sammanfattning : Semiconductor quantum dots (QDs) are considered to be a crucial part of future quantum technologies due to their enormous potential as efficient sources of single and indistinguishable photons. Single photons are necessary to transport quantum information over large distances through the existing global fibre optic network. LÄS MER

  7. 5. Operando detection of Li-plating by online gas analysis and acoustic emission monitoring

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Strukturkemi

    Författare :Inti Espinoza Ramos; [2023]
    Nyckelord :Li-ion batteries; graphite; solid electrolyte interphase; lithium plating; online gas analysis; operando acoustic emission monitoring;

    Sammanfattning : Lithium ion batteries (LIBs) are widely used for storing and converting chemical energy into electrical energy. During battery operation, lithium ions move between electrode materials, enabling energy storage. However, aging mechanisms like lithium plating can negatively impact battery performance and lifetime. LÄS MER