Sökning: "Grain Model"

Visar resultat 6 - 10 av 266 avhandlingar innehållade orden Grain Model.

1. 6. Benefits of strengthening timber with fibre-reinforced polymers

   Författare :Alann André; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental results; Carbon; Timber; Tension perpendicular to the grain; Ductility; Flax; Reinforcement; Compression failure parallel to the grain; Kinkband; Composite materials; Numerical model; Analytical model; FRP;

   Sammanfattning : As a material, timber offers a wide range of alternatives in terms of structural applications. The natural defects present in timber are, however, the source of large variations in mechanical properties. LÄS MER

3. 7. Significance of grain boundaries for transport phenomena in graphene and proton-conducting barium zirconate

   Författare :Edit Ahlberg Helgee; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; graphene; density functional theory; phonons; proton conduction; grain boundaries; BaZrO3; interatomic model potentials;

   Sammanfattning : Grain boundaries can have a significant influence on the properties of polycrystalline materials. When determining the type and extent of this influence it is frequently useful to employ computational methods such as density functional theory and molecular dynamics, which can provide models of the grain boundary structure at the atomistic level. LÄS MER

4. 8. Optimal Estimation of Grain Orientation in an Anisotropic Weld by Ultrasonic Techniques

   Författare :Qingwei Liu; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; anisotropic weld model; multi-objective genetic algorithm; nonlinear optimization; ultrasonic probe model; 2D ray tracing;

   Sammanfattning : Grain orientation in an anisotropic weld highly influences ultrasound paths and thus is a significant parameter when making simulations of ultrasonic testing of anisotropic welds. Though each weld is thought to be unique in its structure, the common procedure in modeling is to prescribe the grain orientation in a weld based on limited experience. LÄS MER

5. 9. A robust scheduling technique for fine-grain real-time computations

   Författare :Annika Olsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; real-time systems; time-deterministic communication; fine-grain parallelism; sorting memory; multiprocessor architectures; robustness; data flow; scheduling technique; jitter tolerance; data-driven execution model;

   Sammanfattning : .... LÄS MER

7. 10. Test Charge Response of a Dusty Plasma with Grain Size Distribution and Charging Dynamics

   Författare :Muhammad Shafiq; Michael A. Raadu; Jens Juul Rasmussen; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dusty plasmas; Complex plasmas; Grain size distribution; Grain charging dynamics; Lorentzian distribution; Kappa distribution; Test charge response; Delayed shielding; Energy loss; Drag force; Wake field.; Plasma physics; Plasmafysik;

   Sammanfattning : This doctoral thesis reports analytical and numerical results for the electrostatic response of a dusty plasma to a moving test charge. Two important physical aspects of dusty plasmas, namely grain size distribution and grain charging dynamics were taken into account. LÄS MER