Browsing NTNU Open by Author "Onstein, Ingrid Fjordheim"

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    • Adaptive Robotic Deburring of Sand Cast Parts 

      Onstein, Ingrid Fjordheim (Doctoral theses at NTNU;2024:401, Doctoral thesis, 2024)
      This thesis presents a one-of-a-kind adaptive tool path generation for automatic deburring of sand cast parts using robots. Sand cast parts have geometric variations and excess material around the edges formed by the casting ...

    • Additive Manufacturing Path Generation for Robot Manipulators Based on CAD Models 

      Onstein, Ingrid Fjordheim; Evjemo, Linn Danielsen; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2020)
      Traditional extrusion based additive manufacturing (AM) is realized using a 3 degrees of freedom (DOF), translation only, 3D printer. It then follows that the printer must be larger than the printed part. One way of enabling ...

    • An Additive Manufacturing Path Generation Method Based on CAD Models for Robot Manipulators 

      Onstein, Ingrid Fjordheim (Master thesis, 2018)
      Traditional extrusion based Additive Manufacturing (AM) is realized using a 3 Degrees of Freedom (DOF), translation only, 3D printer. Here, the printer must be larger than the printed part. One way of enabling AM in ...

    • Automated 3D burr detection in cast manufacturing using sparse convolutional neural networks 

      Mohammed, Ahmed Kedir; Kvam, Johannes; Onstein, Ingrid Fjordheim; Bakken, Marianne; Schulerud, Helene (Peer reviewed; Journal article, 2022)
      For automating deburring of cast parts, this paper proposes a general method for estimating burr height using 3D vision sensor that is robust to missing data in the scans and sensor noise. Specifically, we present a novel ...

    • Automated Tool Trajectory Generation for Robotized Deburring of Cast Parts Based on 3D Scans 

      Onstein, Ingrid Fjordheim; Bjerkeng, Magnus Christian; Martinsen, Kristian (Peer reviewed; Journal article, 2023)
      Manual removal of burrs on castings introduces health, safety, and environmental concerns. Automated removal of highly variable casting burrs could improve safety, but requires a solution based on robots, smart sensors, ...

    • Cascading trade-off studies for robotic deburring systems 

      Onstein, Ingrid Fjordheim; Haskins, Cecilia; Semeniuta, Oleksandr (Peer reviewed; Journal article, 2022)
      Advanced manufacturing technologies play an important role in keeping production in high-cost countries. Due to their flexibility, robot-based solutions have been one of the major enablers in establishing advanced manufacturing ...

    • Deburring Using Robot Manipulators: A Review 

      Onstein, Ingrid Fjordheim; Semeniuta, Oleksandr; Bjerkeng, Magnus Christian (Chapter, 2020)
      Deburring of cast parts can be a very challenging task. Today, large burrs on large casting are mostly removed manually. Workers are exposed to hazardous working conditions through, among other things, high noise and ...

    • Possibilities and challenges of using robot manipulators in additive manufacturing (AM) 

      Evjemo, Linn Danielsen; Hassel, Trond Arne; Njaastad, Eirik B; Adel, Salar; Onstein, Ingrid Fjordheim; Arbo, Mathias Hauan; Brøtan, Vegard; Cibicik, Andrej; Gravdahl, Jan Tommy (Chapter, 2024)
      In this chapter, we present a review of the possibilities and challenges of using robotic manipulators in additive manufacturing (AM). The review summarises the research done in the Centre for Research-based Innovation ...

    • Reduksjon av støpeskjegg med automatisert etterarbeid 

      Engtrø, Espen; Lien, Per-Henrik Audestad (Bachelor thesis, 2023)
      Oppgaven tar utgangspunkt i å utvikle samt utforske verktøy som brukes til å redusere støpeskjegg, samtidig som en samarbeidende robot fra UR blir benyttet for generering av verktøybaner. Testene ble utført på en evakueringsbåre ...

    • Sensor‑guided motions for manipulators in manufacturing 

      Grøtli, Esten Ingar; Brandt, Martin Albertsen; Arbo, Mathias Hauan; Onstein, Ingrid Fjordheim; Mohammed, Ahmed Kedir; Gravdahl, Jan Tommy (Chapter, 2024)
      Sensors, particularly 2D and 3D sensors, as well as force-torque sensors, have enabled several new ways for motion planning and motion control of industrial manipulator arms. Although manual programming is still common, ...