Sökning: "Erik Thermaenius"

Hittade 2 uppsatser innehållade orden Erik Thermaenius.

1. 1. Inverse source modeling of roll induced magnetic signature

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för beräkningsvetenskap

   Författare :Erik Thermaenius; [2022]
   Nyckelord :inverse modeling; inverse; modeling; magnetic; signature; source modeling; tikhonov; roll; magnetic silencing; regularization; regularisation; induction; dipole; dipoles; Helmholtz; inversmodellering; magnetisk; signatur; källmodellering; rullning; rullningsinducerad; regularisering; dipol; dipoler;

   Sammanfattning : Vessels constructed in electrically conductive materials give rise to frequency-dependent, induced magnetic fields when waves of water cause them to roll in the Earth's magnetic field. These fields, typically referred to as roll-induced magnetic vortex fields, are a component of the ship's overall signature, where signature refers to measurable quantities which can reveal or identify objects. LÄS MER

3. 2. Investigating strains on the Oseberg ship using photogrammetry and finite element modeling

   Kandidat-uppsats, Uppsala universitet/Tillämpad mekanik

   Författare :Andreas Eriksson; Erik Thermaenius; [2020]
   Nyckelord :Oseberg ship; strain; strain analysis; mechano-sorptive strains; Delaunay triangulation; finite element analysis;

   Sammanfattning : The Oseberg ship is known as one of the finest surviving artifacts from the Viking age, with origins dated back to the 800s. The ship has been displayed in the Viking ship museum in Oslo since 1926. The nearly 100 years on museum display along with the over 1000 years it was buried has weakened the structure of the ship. LÄS MER