Sökning: "Materiallära"

Visar resultat 1 - 5 av 53 avhandlingar innehållade ordet Materiallära.

  1. 1. Intermittenta flereggsprocesser : modeller och metoder för belastningsanalys

    Detta är en avhandling från Department of Production and Materials Engineering, LTH, Lund University

    Författare :Carin Adolfsson; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; materialteknik; Materiallära; Material technology; FEM; Milling; Sawing; Measurement; Model; Cutting; Force;

    Sammanfattning : This thesis presents the developement and verification of cutting force models for multi-toothed cutting processes. The scope of the thesis includes the modelling and measuring of factors that affect the mechanical load variation between individual cutting edges in the process. LÄS MER

  2. 2. Automatic Quality Monitoring in GMA Welding using Signal Processing Methods

    Detta är en avhandling från Department of Production and Materials Engineering, LTH, Lund University

    Författare :Stefan Adolfsson; Lund University.; Lunds universitet.; [1998]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material technology; F; Signal Processing; Automatic Quality Monitoring; GMA welding; Materiallära; materialteknik;

    Sammanfattning : An ongoing continuous process of automatization of the production lines is used in industry to reduce production costs. Automatization of quality control should be seen as part of a cost reduction process, as well as of quality control of the welding. LÄS MER

  3. 3. Modelling of Granular Materials

    Detta är en avhandling från Department of Production and Materials Engineering, LTH, Lund University

    Författare :Aylin Ahadi; Lund University.; Lunds universitet.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydraulic engineering; Civil engineering; materialteknik; Materiallära; Material technology; binary mixture model; simulations; material modelling; finite element; granular materials; offshore technology; soil mechanics; Väg- och vattenbyggnadsteknik;

    Sammanfattning : The aim of this doctoral study is to develop and implement a material model for granular materials. The course of this work was concentrated upon a non-associated plasticity model with yield surface and the flow potential expressed in terms of the mean stress p and the third stress invariants I3. LÄS MER

  4. 4. Studies of moisture and alkalinity in self-levelling flooring compounds

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Anders Anderberg; Lund University.; Lunds universitet.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alkalinity; SLC; floor screed; moisture transport; self-levelling flooring compound; Material technology; diffusion coefficient; materialteknik; Materiallära; secondary emissions; sorption isotherm;

    Sammanfattning : In recent decades there has been an increasing interest in the indoor environment and its connections with public health. One important topic discussed has been the relation between the moisture in buildings and health. Cementitious materials, when cast, contain excess water since this is necessary for workability and for flow properties. LÄS MER

  5. 5. Macro-Geometric Defects, A numerical and experimental study of springback and surface defects

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Alf Andersson; Lund University.; Lunds universitet.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Simulation; Sheet-metal forming; Finite element analysis; Information exchange; Springback; Surface defects; Drawbead; Process analyse; Optimisation; materialteknik; Materiallära; Material technology;

    Sammanfattning : Today, shortened lead-times in the automotive industry have dramatically increased the need for more efficient development methods at every stage of the process development chain. In order to decrease the long lead-time for producing a forming tool, sheet-metal-forming simulation was introduced. LÄS MER