Essays about: "crack direction"

Showing result 1 - 5 of 29 essays containing the words crack direction.

1. 1. Micro-CT based finite element models for mechanical strength assessment of glass ceramic scaffolds obtained through the robocasting technique

   University essay from KTH/Hållfasthetslära

   Author : Gustav Thessén; [2022]
   Keywords : µ-CT modelling; phase-field method; bio-glass scaffolds; strength assessment; Mikrotomografi; μ-CT; fasfältsmetoden; bio-glas stödstrukturer; brottgräns;

   Abstract : 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. READ MORE

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

   University essay from KTH/Fiber- och polymerteknologi

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

   Abstract : 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. READ MORE

4. 3. Embedment Behavior of Steel Dowel in Timber: Influence of Moisture Content, Assembly History, and Artificial Cracks : An experimental and numerical study of embedment strength and stiffness of steel dowel in timber with different wood moisture content and assembly history

   University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

   Author : Zijad Shehadeh; [2022]
   Keywords : Embedment strength; Embedment stiffness; Moisture content; Assembly history; Artificial cracks; Steel Dowel;

   Abstract : Timber is becoming an increasingly popular construction material particularly due to its great environmental properties. Just alone around Linnaeus University in Växjö city, dozens of multistory buildings in timber have risen. READ MORE

5. 4. Fatigue properties of Laser Powder Bed Fusion (LPBF) built 21-6-9 stainless stee

   University essay from Högskolan Väst/Avdelningen för avverkande och additativa tillverkningsprocesser (AAT)

   Author : Jayanth Krishna; [2021]
   Keywords : stainless steels; LPBF; Fatigue; 21-6-9;

   Abstract : Fatigue performance is one of the important mechanical properties which is hindering some of the additive manufacturing build structures. The main objective of this study is to investigate the fatigue life dependence of the 21-6-9 austenitic stainless-steel build using the laser powder bed fusion (LPBF) technique. READ MORE

6. 5. Energy and Strength-based Criteria for Intralaminar Crack Growth in Regions with High Stress Gradients

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Anish Niranjan Kulkarni; [2021]
   Keywords : Cross-ply composites; High crack density; Stress gradient; FEM; Stress analysis; Strain Energy Release Rate;

   Abstract : Cross-ply composite laminates can develop very high density of transverse cracks in the 90-layer under severe thermal and mechanical loading conditions. At such high crack densities, two adjacent cracks start to interact, and a stress gradient is created in the region between these cracks. READ MORE