Sökning: "Per Bergström"

Visar resultat 1 - 5 av 33 avhandlingar innehållade orden Per Bergström.

  1. 1. Computational methods for on-line shape inspection

    Författare :Per Bergström; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Scientific Computing; Teknisk-vetenskapliga beräkningar;

    Sammanfattning : This licentiate thesis describes computational methods that solve problems occurring in industrial on-line shape quality inspection of produced items. These items are measured and compared with their corresponding CAD object. The meaning of on-line is that the inspection is done on-line in the production line, i.e. LÄS MER

  3. 2. Computational methods for shape verification of free-form surfaces

    Författare :Per Bergström; Mårten Gulliksson; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Teknisk vetenskapliga beräkningar; formverifiering; online; formmätning; Scientific Computing; Teknisk-vetenskapliga beräkningar;

    Sammanfattning : Beräkningsmetoder för formverifiering av friformsytor utgör huvudinnehållet i denna doktorsavhandling. En gemensam egenskap för dessa metoder är att de möjliggör formverifiering online direkt i produktionslinan. Av den anledningen måste metoderna vara snabba och robusta. LÄS MER

  4. 3. Modelling Mechanics of Fibre Network using Discrete Element Method

    Författare :Per Bergström; Tetsu Uesaka; Charlotta Hanson; Kaarlo Niskanen; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Low-density fibre networks are a fundamental structural framework of everyday hygiene products, such as baby diapers, incontinence and feminine care products, bathroom tissue and kitchen towels. These networks are a random assembly of fibres, loosely bonded and oriented in the plane direction. LÄS MER

  5. 4. Blue Oceans with Blue Mussels - Management and planning of mussel farming in coastal ecosystems

    Författare :Per Bergström; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coastal management; Mytilus edulis; Growth; Planning; Modelling; Predict; Restoration; Mitigation; Aquaculture; Bioturbation;

    Sammanfattning : Eutrophication is one of the largest and most serious global threats to the marine environment. The effect of eutrophication has become increasingly clear during recent time, and major economic and political efforts are being made to tackle its causes and consequences in Sweden and its surrounding seas. LÄS MER

  7. 5. On the mechanics of pulp fibre networks - a combined numerical, theoretical and experimental study

    Författare :Per Bergström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This work explores mechanics of fibre networks, especially for pulp fibre networks commonly found in hygiene products, such as baby diapers, incontinence and feminine care products, bathroom tissue and kitchen towels. Given that the main functionalities of these products are directly dependent on network configuration, designing these complex network structures for better performance, better utilisation of materials and less resources used requires in-depth knowledge and understanding of the structure and properties on the fibre level. LÄS MER