Sökning: "Experimentella tester"

Visar resultat 21 - 25 av 90 uppsatser innehållade orden Experimentella tester.

1. 21. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Ludvig Dahlin; Ebba Larsson Regnström; [2022]
   Nyckelord :FEM; Finite element method; bicycle helmet; impact modelling; solid mechanics; FEM; Finita element-metoden; cykelhjälm; islagsmodellering; hållfasthetslära;

   Sammanfattning : The aim with this master thesis was to set up a FE-simulation of an impact test of a bike helmet in LS-DYNA that correlates well with the peak acceleration score of a real life impact test. Furthermore, a parametric study has been performed in LS DYNA to investigate the robustness of the model, as well as to see which parameters have a great influence on the peak acceleration score. LÄS MER

3. 22. The influence of post-buckling damage on the tensile properties of single wood pulp fibers

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Raphael Andreolli; [2021]
   Nyckelord :Solid Mechanics; single fiber testing; wood pulp fibers; post-buckling damage; experiments; development of testing methods; tensile properties; tensile stiffness; tensile strength; Hållfasthetslära; enskild fiber testning; pappersmassa fiber; skada efter knäckning; experiment; utveckling av testutrustning; dragegenskaper; dragstyvhet; draghållfasthet;

   Sammanfattning : The rapid growth of plastic waste from food packaging around the world demands renewable substitutes, such as natural fibers and biocomposites. Wood fibers are natural fibers extracted from trees and are commonly used in packaging. LÄS MER

4. 23. Axial cutting force in drilling operation

   Master-uppsats, Lunds universitet/Industriell Produktion

   Författare :Heaven Frezgi; Bharath Gelli; [2021]
   Nyckelord :Axial cutting force; Drilling; Model optimization.; Technology and Engineering;

   Sammanfattning : Metal cutting has been part of industrial development since the iron age. Since then, it has changed shapes and criteria, but efficiency in metal cutting has been one of the biggest goals in the industrial world for just as long. To have maximum efficiency requires some level of process behavior prediction, which inspired the degree project. LÄS MER

5. 24. Finite Element Analysis of Stresses in the MIST CubeSat due to Dynamic Loads During Launch

   Master-uppsats, KTH/Lättkonstruktioner

   Författare :Carl Järmyr Eriksson; [2021]
   Nyckelord :Satellite; CubeSat; Nanosatellite; Dynamic Loads; Launch Loads; Finite Element Analysis; FEA; Quasi-static Acceleration; Modal Analysis; Random Vibration; Shock Loads; satellit; CubeSat; nanosatellit; dynamiska laster; uppskjutningslaster; finita elementmetoden; FEM; kvasistatisk acceleration; modalanalys; stokastiska vibrationer; chocklaster;

   Sammanfattning : A finite element model of the CubeSat MIST was created, in order to assess the stresses that occur in the satellite in response to loads during its launch. Due to size limits of thesoftware used, simplifications had to be made to the geometry of the model. LÄS MER

7. 25. Development and Scaling Up of Test Protocol to a Full-Scale Filter Rig to Investigate Soft Particle Filtration Efficiency in Biofuel Blends

   Master-uppsats, KTH/Kemiteknik

   Författare :Saurabh Shinkhede; [2021]
   Nyckelord :Heavy duty transportation; fuel filter clogging; soft particles; biofuel blends; filter test rig; Tunga transport; igensättning av bränslefilter; mjuka partiklar; biobränsleblandningar; filtertestrigg;

   Sammanfattning : Kommersiella tunga transporter står för en stor del av utsläppen av växthusgaser. För att minska det globala fotavtrycket hos kommersiella fordon är det vanligt att använda biodrivmedel som ”drop in” bränslen. LÄS MER