Sökning: "anisotropic"

Visar resultat 6 - 10 av 111 uppsatser innehållade ordet anisotropic.

1. 6. Anisotropic Muscle Phantoms for Shear Wave Elastography Assessment of the Levator Ani Muscle Properties

   Kandidat-uppsats, KTH/Medicinteknik och hälsosystem

   Författare :Bleona Koxha; Melissa Jova Martinez; [2023]
   Nyckelord :pelvic floor disorder; levator ani muscle; shear wave elastography; phantom; anisotropy; polyvinyl alcohol; bäckenbottenbesvär; levator ani muskel; shear wave elastografi; fantom; anisotropi; polyvinylalkohol;

   Sammanfattning : Pelvic floor disorder is an emerging research area and is highlighted in many pelvic floor studies. Assessment methods for this type of injury are lacking and new methods for prevention and diagnosis are needed. Pelvic floor disorders are common among women and can lead to suffering for the patient. LÄS MER

3. 7. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning

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

   Författare :Julia Ibstedt; [2023]
   Nyckelord :Topology optimization; Multi-scale topology optimization; Machine learning; Gaussian process; Homogenization; Inverse homogenization; Anisotropic materials; Symmetry groups; Material property space; Topologioptimering; Flerskalig topologioptimering; Maskininlärning; Gaussian process; Homogenisering; Anisotropa material; Symmetrigrupper; Materialegenskapsrymd;

   Sammanfattning : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. LÄS MER

4. 8. Color halftoning methods for screen printing and special effect pigments : Reproducing iridescent colors

   Master-uppsats, Linköpings universitet/Institutionen för teknik och naturvetenskap

   Författare :Alfred Rundquist; [2023]
   Nyckelord :iridescence; color; halftoning; screen; printing; ink; special; effect; pigments; media technology; simulation; iriserande; färg; rastrering; metod; screentryck; silkscreentryck; raster; färgreproduktion; simulering;

   Sammanfattning : Iridescence is the property that makes colors vary by angle of observation. Technology has made it possible to print with ink that has this anisotropic property. The ink that is used contains microparticles and therefore only specific printing methods can be used, for example screen printing. LÄS MER

5. 9. Finite Element Macro-modeling of a Historical Masonry Building : Influence of Isotropic vs Anisotropic Plastic Material Model Assumption in Static Analysis

   Master-uppsats, KTH/Bro- och stålbyggnad

   Författare :Madeleine Olsson; Maja Gustavsson; [2023]
   Nyckelord :;

   Sammanfattning : In this study, a macro-modeling strategy is implemented in a bearing wall with arch openings in an existing historical masonry building. This is to investigate what differences and similarities can be observed from the assumption of an orthotropic versus an isotropic constitutive material model. LÄS MER

7. 10. En teoretisk modell för 3D-printing av fälg i kolfiber

   M1-uppsats, Malmö universitet/Fakulteten för teknik och samhälle (TS)

   Författare :Samuel Hall; [2022]
   Nyckelord :3D-printing; Carbon fiber; Carrim; Automotive wheels;

   Sammanfattning : The automotive industry faces the challenge to manufacture vehicles with reduced material usage and climate impact. To achieve this the industry has begun using other materials such as carbon fibre composite than materials such as steel and aluminium which are normally used for the manufacturing of automobile parts. LÄS MER