Sökning: "Artificial Ageing"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Artificial Ageing.

  1. 1. Heat treatment of Al-Si-Cu-Mg casting alloys

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Emma Sjölander; Högskolan i Jönköping.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cast aluminium alloys; Heat treatment; Solution treatment; Artificial ageing; Tensile properties; Plastic deformation; Microstructure; Modelling; Plastic Deformation; Tensile Properties; Heat Treatment; Solution Treatment; Artificial Ageing;

    Sammanfattning : Environmental savings can be made by increasing the use of aluminium alloys in the automotive industry as the vehicles can be made lighter. Increasing the knowledge about the heat treatment process is one task in the direction towards this goal. The aim of this work is to investigate and model the heat treatment process for Al-Si casting alloys. LÄS MER

  2. 2. Flow-induced Surface Defects and Ageing Behaviour of Injection-moulded Polymers

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Giovanna Iannuzzi; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PP; surface defects; flow marks tiger stripes ; ageing; Injection moulding; ABS; rheological properties; degradation; surface topography; discolouration;

    Sammanfattning : Injection moulding is one of the most commonly used manufacturing methods for the production of polymer-based components such as car bumpers and other automotive details. The surface appearance of these products is of great importance since it is directly connected to the perceived quality. LÄS MER

  3. 3. Influence of Ageing on Material Properties at Interfaces in Composite Insulators

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Johan Andersson; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; composite insulators; ageing; silicone rubber; salt fog test; Outdoor insulation; inclined plane test; interfaces;

    Sammanfattning : High quality of internal interfaces in composite insulators for high voltage applications is necessary for securing durability of their functionality. Weak macroscopic interfaces between the glass fibre reinforced (FRP) epoxy core and the silicone rubber (SIR) housing, such as spots with reduced bonding or a loss of the adhesion as well as presence of foreign contaminants, can appear to have an accelerating effect on the evolution of ageing processes, though it may take years before the first signs of processes endangering the insulator function appear. LÄS MER

  4. 4. In Search of Scientific Methods for Conservation of Historic Silk Costumes

    Detta är en avhandling från Göteborg : Acta Universitatis Gothoburgensis

    Författare :Johanna Nilsson; Göteborgs universitet.; Gothenburg University.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; silk; artificial ageing; Queen Christina; historic costumes; conservation; ATR-FTIR; SEC; DRIFTS; tensile tests;

    Sammanfattning : The general aim of this dissertation is to lay ground for the evaluation of conservation methods for historic costumes. The Royal Armoury, Stockholm has a large number of 17th century men’s garments, many of them made of silk and in need of conservation. LÄS MER

  5. 5. Ageing and Conservation of Silk. Evaluation of Three Support Methods Using Artificially Aged Silk

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :Johanna Nilsson; Göteborgs universitet.; Gothenburg University.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Artificial ageing of silk; textile conservation; historic silk costumes; stitching techniques; aesthetics;

    Sammanfattning : The general aim of this thesis is to evaluate common remedial conservation support methods used in the conservation treatments of fragile silk costumes that have experienced physical damage. It is based on five papers. LÄS MER