Sökning: "1997"

Visar resultat 16 - 20 av 4097 avhandlingar innehållade ordet 1997.

  1. 16. Resin transfer moulded composite materials : processing, structure, property relationships

    Författare :J. Anders Holmberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : This thesis contains analysis of the performance of polymer composites manufactured by resin transfer moulding (RTM). The thesis consists of six papers, where the first two deals with the tensile strength of composites reinforced with randomly oriented glass fibres, which still is the most common reinforcement in RTM manufacturing. LÄS MER

  3. 17. Critical noise factors and their relation to annoyance in working environments

    Författare :Kjell Holmberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

    Sammanfattning : Noise is one of the most widespread problems in working environments. Besides the obvious risk of hearing damage and masking of warning signals and speech, the effects on concentration, performance, behaviour and general well-being are serious consequences of annoying noise in the working environment. LÄS MER

  4. 18. Application of artificial neural networks to rock engineering problems

    Författare :Yi Huang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : This thesis is intended to apply artificial neural network models to different rock engineering problems, such as the determination of aggregate quality parameters, rock indentation depth, ore boundaries and ore grades. The thesis deals with attempts at predictions of these various features from factors that are known or assumed to have an influence on them using artificial neural networks. LÄS MER

  5. 19. Distributed connectivity algorithms

    Författare :Esther Jennings; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dependable Communication and Computation Systems; Kommunikations- och beräkningssystem;

    Sammanfattning : The goal of this research is to design efficient distributed algorithms which execute on an arbitrary network to recognize special connectivity structures within that network. In some cases, we also consider the maintenance of these special structures in dynamically changing networks. LÄS MER

  7. 20. Computer integrated design systems in concurrent engineering

    Författare :Peter Jeppsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : This thesis comprises six papers dealing with implementations and techniques for linking computer-aided applications for design and analysis into a concurrent engineering environment. Each paper deals with a part of the environment - together they constitute an integrated design system for concurrent engineering. LÄS MER