Essays about: "residual deformations"

Found 5 essays containing the words residual deformations.

  1. 1. Minimal Deformation Methods for Loop Closure

    University essay from Lunds universitet/Matematik LTH

    Author : Erik Tegler; [2021]
    Keywords : Mathematics and Statistics;

    Abstract : This thesis proposes a method for how to find duplicated 3D points in a single Structure from Motion point cloud. Together with related articles, this forms a possible solution to the loop closure problem. The proposed method works by first selecting candidate pairs of 3D points by comparing BRIEF descriptors of all points. READ MORE

  3. 2. Effect of Induction-Heat Post-Curing on Residual Stresses in Fast-Curing Carbon Fibre Reinforced Composites

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Mercedes Amelia Bettelli; [2020]
    Keywords : Carbon Fibres Reinforced Polymer Composite; epoxy resins; cure behaviour; residual stress and shape distortions;

    Abstract : Manufacturing induced shape distortions is a common problem for composite materials. Due to the non-isotropic nature of carbon fibre reinforced polymers (CFRP) unavoidable deformations occur during part production. During fabrication of polymer composites, the material obtains its final shape at elevated temperatures. READ MORE

  4. 3. Simulation of laser welding in sandwich rocket nozzle

    University essay from Karlstads universitet/Avdelningen för maskin- och materialteknik

    Author : Filip Elfving; [2015]
    Keywords : FEM; Sandwich; T-joint; residual deformations; residual stresses; Laser;

    Abstract : This bachelor thesis has been carried out at GKN Aerospace. GKN is a member of European Space Agency, designing and manufacturing rocket-nozzles for the Ariane rockets. The manufacturing process entails many welds. Weld-simulations have been made to investigate stresses and plastic strains on simplified geometries. READ MORE

  5. 4. Managing distortion in welded structures using FEM

    University essay from KTH/Lättkonstruktioner

    Author : Mehdi Ghanadi; [2013]
    Keywords : ;

    Abstract : Welding as high productive joining method is widely employed in automotive, aerospace and shipbuilding industries. In practice, welding distortion brings about undesirable effects on production accuracy, appearance and strength of welded components. READ MORE

  6. 5. Characterization of Hard Metal Surfaces after Various Surface Process Treatments

    University essay from Institutionen för fysik, kemi och biologi

    Author : Ali Hakim; [2008]
    Keywords : WC-Co; cermet; grinding; blasting; polishing; residual stress; surface roughness; surface deformations; cross section; adhesion;

    Abstract : The aim of this thesis is to investigate how material surfaces are affected by various surface treatments and how this relates to the adhesion of the coating. The materials that were studied were WC-Co and Cermets and the surface treatments used were polishing, grinding with coarser and finer abrasive grains, and finally wet blasting and dry blasting. READ MORE