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Blar i NTNU Open på forfatter "Elverum, Christer Westum"

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    • A new method for assessing anisotropy in fused deposition modeled parts using computed tomography data 

      Tronvoll, Sigmund Arntsønn; Vedvik, Nils Petter; Elverum, Christer Westum; Welo, Torgeir (Journal article; Peer reviewed, 2019)
      Voids in fused deposition modeled (FDM) parts are assumed to be a key driver for their anisotropic behavior. However, these assumptions are based on investigations of voids using only 2D data (microscopy images). This paper ...
    • Dimensional accuracy of threads manufactured by fused deposition modeling 

      Tronvoll, Sigmund Arntsønn; Elverum, Christer Westum; Welo, Torgeir (Journal article; Peer reviewed, 2018)
      For parts manufactured by fused deposition modeling (FDM), helical threads drawn in accordance with normal standards (e.g. ISO 68-1), tend to end up deformed when manufactured. These dimensional imperfections typically ...
    • Eliciting unknown unknowns with prototypes: Introducing prototrials and prototrial-driven cultures 

      Jensen, Matilde Bisballe; Elverum, Christer Westum; Steinert, Martin (Journal article; Peer reviewed, 2017)
      This paper maps and describes how prototypes are used to elicit requirements of unknown unknowns in industry. Eight engineering design companies serve as a dataset for a multi-case investigation. By semi-quantitatively ...
    • Investigating pressure advance algorithms for filament-based melt extrusion additive manufacturing: theory, practice and simulations 

      Tronvoll, Sigmund Arntsønn; Popp, Sebastian; Elverum, Christer Westum; Welo, Torgeir (Journal article; Peer reviewed, 2019)
      Purpose – This paper aims to present the mathematical foundation of so-called advance algorithms, developed to compensate for defects during acceleration and deacceleration of the print head in filament-based melt extrusion ...
    • Novel in-situ residual strain measurements in additive manufacturing specimens by using the Optical Backscatter Reflectometry 

      Wang, Shaoquan; Lasn, Kaspar; Elverum, Christer Westum; Wan, Di; Echtermeyer, Andreas (Journal article; Peer reviewed, 2020)
      Material extrusion (MEX) is a well established production method in additive manufacturing. However, internal residual strains are accumulated during the layer-by-layer fabrication process. They bring about shape distortions ...
    • Prototype Experiments: Strategies and Trade-offs 

      Tronvoll, Sigmund Arntsønn; Elverum, Christer Westum; Welo, Torgeir (Journal article; Peer reviewed, 2017)
      Throughout the whole product development process, there is always a question on whether the proposed product is “up to its task”, and often it is up to the engineer or designer to answer these questions. In many cases, ...
    • Structural and Biomedical Properties of Common Additively Manufactured Biomaterials: A Concise Review 

      Ødegaard, Kristin Sirnes; Torgersen, Jan; Elverum, Christer Westum (Peer reviewed; Journal article, 2020)
      Biomaterials are in high demand due to the increasing geriatric population and a high prevalence of cardiovascular and orthopedic disorders. The combination of additive manufacturing (AM) and biomaterials is promising, ...
    • The effects of voids on structural properties of fused deposition modelled parts: a probabilistic approach 

      Tronvoll, Sigmund Arntsønn; Welo, Torgeir; Elverum, Christer Westum (Journal article; Peer reviewed, 2018)
      In the search to understand the functional capabilities and limitations of fused deposition modelling (FDM) manufactured components, control over their structural behaviour is crucial. For example, voids introduced during ...

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