Sökning: "Crack control"

Visar resultat 1 - 5 av 31 uppsatser innehållade orden Crack control.

  1. 1. Image analysis of Light Optical Microscopy (LOM) images of metallurgical samples

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :David Håkansson; [2023]
    Nyckelord :;

    Sammanfattning : Processing metals in different ways often requires stringent quality control to ensure the quality of the processed metal. This master's thesis aims to develop methods for evaluating the quality of metals via image analysis rather than inspecting images manually as it traditionally has been done. LÄS MER

  3. 2. Life extension of welded steel details in bridges

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Zhelei Jin; [2023]
    Nyckelord :Welded joints; Fatigue; Pre-fatigue; Life extension; Fracture mechanics; Finite element analysis; HFMI; ; Svetsade fogar; utmattning; förutmattning; livsförlängning; frakturmekanik; finit elementanalys; HFMI; ;

    Sammanfattning : High-Frequency Mechanical Impacts (HFMI) is a surface treatment technique utilized to introduce residual stresses and extend the service life of structures. This project primarily focuses on studying the life extension effects of HFMI on welded structures that have undergone fatigue and have existing cracks. LÄS MER

  4. 3. I en liten spricka i strukturen… : En observationsstudie av förskolebarns aktörskap genom platsskapande

    Uppsats för yrkesexamina på grundnivå, Malmö universitet/Institutionen för barndom, utbildning och samhälle (BUS)

    Författare :Carina Andersson; [2022]
    Nyckelord :agency; creating space; interpretive reproduction; peer cultures; preschool; time space; aktörskap; platsskapande; tolkande reproduktion; kamratkulturer; förskola;

    Sammanfattning : The preschool is often looked upon as an institution for the parents and guardians, with an aim to influence the children. If we change the perspective, from the adult to the child´s perspective, we might find that the preschool with its places and activities is created by the children who live their everyday lives there. LÄS MER

  5. 4. Development of a System to Quantify Coking in Rocket Nozzle Cooling Channels

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

    Författare :Adam Parks; [2022]
    Nyckelord :methane; pyrolysis; reusable; carbon deposition; ozone cleaning; rocket engines; cooling channels; borescope; metan; pyrolys; återanvändbar; koldeposition; ozon-rening; raketmotorer; kylkanaler; boreskop;

    Sammanfattning : Liquid methane is becoming an increasingly attractive rocket propellant due to its high performance characteristics and potential to support in-situ resource utilisation. Methane, however, when heated, can thermally decompose in a process known as pyrolysis. LÄS MER

  7. 5. Understanding the correlation between molecular structure of chilled dairy creams and the risk of environmental stress cracking in Tetra Pak® carton packages

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Alejandra Fernandez Castaneda; [2022]
    Nyckelord :Cream; microestructure; environmental stress cracking; food technology and nutrition; Agriculture and Food Sciences;

    Sammanfattning : Multilayer food packaging are lined with an inner layer of plastic and has excellent barrier properties. However, plastics lose their mechanical properties after being exposed to certain conditions; the combination of factors generates failures in the material such as the appearance of cracks, this phenomenon is known as environmental stress cracking (ESC). LÄS MER