Sökning: "Said Vega"

Hittade 2 uppsatser innehållade orden Said Vega.

1. 1. Research on the viability of the use of rigid gels for the cleaning of water-gilded surfaces

   Master-uppsats, Göteborgs universitet/Institutionen för kulturvård

   Författare :Ana Vega Ramiro; [2021-10-01]
   Nyckelord :Water-gilding; Gels; Agar-Agar; Borax; SEM;

   Sammanfattning : As the Getty Institute of conservation and other researchers said, studies are absent regarding cleaning gilded surfaces. These surfaces are extraordinarily complex to clean due to their water-sensitive nature. LÄS MER

3. 2. Spacecraft dynamic analysis and correlation with test results : Shock environment analysis of LISA Pathfinder at VESTA test bed

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Beata Iwona Kunicka; [2017]
   Nyckelord :FEA FEM; finite element analysis; finite element method; mechanical analysis; structural analysis; dynamic analysis; computational dynamic analysis of structures; shock analysis; shock environment; shock test; shock test campaign; spacecraft dynamic analysis; MSC Nastran; MSC Patran; Dynaworks; Shock Response Spectrum; SRS; space engineering; space science and technology; mechanical engineering; structural engineering; analysis optimisation; analysis parametrisation; mechanical wave propagation; shock propagation; damping; hysteretic damping; viscous damping; structural damping;

   Sammanfattning : The particular study case in this thesis is the shock test performed on the LISA Pathfinder satellite conducted in a laboratory environment on a dedicated test bed: Vega Shock Test Apparatus (VESTA). This test is considered fully representative to study shock levels produced by fairing jettisoning event at Vega Launcher Vehicle, which induces high shock loads towards the satellite. LÄS MER