Sökning: "sprickinitiering"
Visar resultat 1 - 5 av 11 uppsatser innehållade ordet sprickinitiering.
1. Fracture simulation with a hyperelastic phase field model
Master-uppsats, KTH/HållfasthetsläraSammanfattning : The phase field method is a versatile tool to study crack initiation and propagation in systems with complex geometries. Based on a variational formulation of the equilibrium equations, the sharp crack topology is regularized by a crack with diffusive edges and the damage is described by a continuous phase field variable. LÄS MER
2. Experimental Testing of EPS-foam
Master-uppsats, KTH/HållfasthetsläraSammanfattning : The aim of this master thesis was to investigate the mechanical properties of ExpandedPolystyrene (EPS) through experimental testing. The strain was measured on thespecimen’s surface with Digital Image Correlation (DIC), in order to investigate howthe first principal strain at fracture initiation depends on the loading of the material. LÄS MER
3. Micro-CT based finite element models for mechanical strength assessment of glass ceramic scaffolds obtained through the robocasting technique
Master-uppsats, KTH/HållfasthetsläraSammanfattning : In this thesis, micro computed tomography (μ−CT) scans of a bio-glass scaffold produced by the robocasting technique was used to create finite element method (FEM) models with the purpose of determining its mechanical strength. Prior to this, a Matlab script was used to create several simplified geometries of the scaffold in an effort to determine the importance of scaffold design parameters (such as the fiber compenetration between two adjacent printing planes) on the strength of the scaffold. LÄS MER
4. Impact Damage Assessment : In collaboration with Saab aerostructures
Kandidat-uppsats, KTH/MaterialvetenskapSammanfattning : This project that has been executed in collaboration with Saab aerostructures deals with how three materials, aluminum, titanium and corrosion resistant steel react when they are affected by different energy levels. These energy levels serve the purpose of representing damages that can happen in storage and handling to components used in production. LÄS MER
5. Utmattning vid svetsad anslutning mellan tväravstyvning och fläns i samverkansbro
Kandidat-uppsats, KTH/Byggteknik och designSammanfattning : Vid samverkansbroar fästes tvärförband mellan huvudbalkar med funktion att leda laster ut mot huvudbalkarna. Dessa kan fästas via s.k. livavstyvningsplåtar mot huvudbalkens liv samt flänsar. LÄS MER