Sökning: "fracture growth"

Visar resultat 1 - 5 av 33 uppsatser innehållade orden fracture growth.

  1. 1. Fatigue Crack Growth Analysis in Python algorithm with Finite Element Methods : Numerical Simulation of Fatigue Crack Growth

    Master-uppsats, Karlstads universitet

    Författare :Hasan Majid; [2022]
    Nyckelord :;

    Sammanfattning : The goal of this thesis was to construct and develop a python-based finite element computer program for the evaluation of fatigue crack growth rate in notched metallic rods. The simulation was done by implementing elastic stress theory and linear elastic fracture mechanics techniques. LÄS MER

  3. 2. Characterization methodology to assess the mechanical properties of delignified birch/PMMA transparent wood biocomposites

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Nicolò Arcieri; [2022]
    Nyckelord :Transparent wood; mechanical properties; fracture toughness; in situ experiments; cohesive zone model; Transparent trä; mekaniska egenskaper; brottsstyrka; in situ-experiment; modell för kohesionszonen;

    Sammanfattning : Transparent trä biokompositer (TW) är en ny attraktiv klass av biokomposit. De är uppbyggda av delignifierat trä som impregnerats med en polymer med matchande brytningsindexet.  TW kan skräddarsys för inom ett brett spektrum av funktionella, optiska och mekaniska egenskaper. LÄS MER

  4. 3. Transformation of In-Flight Measured Loads to a Fatigue Test Spectrum

    Master-uppsats, Linköpings universitet/Mekanik och hållfasthetslära

    Författare :Patrick Dümig; [2022]
    Nyckelord :Aerospace engineering; Aircraft load spectra; ASIP; Crack growth; Fatigue testing; Flight loads; Flight test; Fracture mechanics; FSFT; In-flight measurements; Load spectrum reduction; Racetrack filtering; Strain gauge measurements;

    Sammanfattning : Fatigue is a well-recognized issue in lightweight and high-performance aircraft structures. As fatigue failures have led to serious accidents and caused significant economic impact in the past, design against fatigue is crucial. LÄS MER

  5. 4. Fatigue and microstructural study of a 316L austenitic stainless steel marine component produced by Wire Arc Additive Manufacturing (WAAM)

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

    Författare :Oskar Bremler; [2022]
    Nyckelord :Fatigue; steel; 316L; waam; wire arc additive manufacturing; AM; additive manufacturing;

    Sammanfattning : In this study, the fatigue- and fracture properties and microstructure of a marine component of austenitic stainless steel 316L manufactured with the novel method Wire Arc Additive Manufacturing were investigated and compared with data from literature. The purpose was to find a critical flaw size in the material related to its fatigue life. LÄS MER

  7. 5. Design of passively loaded specimen for constant KI during crack growth

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Liisa Tofferi; [2021]
    Nyckelord :constant KI; passively loaded specimen; konstant KI; passivt belastad provstav;

    Sammanfattning : Passive loading of a specimen is a relatively cheap method to use in fracture mechanical testing compared to an actively loaded specimen. For stress corrosion cracking testing it is easier to use a passively loaded specimen since the specimen easily can be placed in a specific corrosive environment. LÄS MER