Search for dissertations about: "Multiple crack interaction"

Showing result 1 - 5 of 10 swedish dissertations containing the words Multiple crack interaction.

2. 1. Elastic-Plastic Fracture Mechanics and RCF in Rails

   Author : Johan Tillberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RCF; elastic-plastic fracture mechanics; Material-forces; Multiple crack interaction;

   Abstract : This thesis concerns issues regarding the modeling and numerical simulation of singularcracks and their propagation in the context of Rolling Contact Fatigue (RCF) in rails.Typically, such cracks are associated with squats and head-checks in the rail head. READ MORE

4. 2. Multiphase continuum modeling of wood : A hybrid mixture theory approach

   Author : Winston Mmari; Björn Johannesson; Lynn Schreyer; Linnéuniversitetet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Moisture transport; Coupled heat and moisture; Over-hygroscopic; Hybrid mixture theory; Mixture theory; Swelling; Hygro-mechanical; Non-linear elasticity; Large deformation; Phase field crack model; Anisotropic cracking; FEM; Numerical model; Norway spruce; Wood; Porous media; Forestry and Wood Technology; Skog och träteknik;

   Abstract : Wood has been used as a construction material for a very long time. The development of efficient industrial production processes of wood has expanded the use of the material with the introduction of new products, such as engineered wood products. READ MORE

5. 3. Microcracking in fiber composites and degradation of thermo-elastic properties of laminates

   Author : Mohamed Sahbi Loukil; Janis Varna; Zoubir Ayadi; Peter Lundmark; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymeric Composite Materials; Polymera konstruktionsmaterial;

   Abstract : The macroscopic failure of composite laminates subjected to tensile increasing load is preceded by initiation and evolution of several microdamage modes. The most common damage mode and the one examined in this thesis is intralaminar cracking in layers. READ MORE

6. 4. Experimental and numerical studies of intralaminar cracking in high performance composites

   Author : Mohamed Sahbi Loukil; Janis Varna; Zoubir Ayadi; Constantinos Soutis; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymeric Composite Materials; Polymera konstruktionsmaterial;

   Abstract : The macroscopic failure of composite laminates subjected to tensile increasing load is preceded by initiation and evolution of several microdamage modes. The most common damage mode and the one examined in this thesis is intralaminar cracking in layers. READ MORE

7. 5. Numerical modelling of the rock fragmentation process by mechanical tools

   Author : Hongyuan Liu; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

   Abstract : The rock fragmentation process by mechanical tools is investigated using numerical method. The rock and tool interaction code (R-T2D) is first developed on the basis of the rock failure process analysis (RFPA) model and the finite element analysis (FEA) method. READ MORE