Sökning: "lars-erik andersson"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden lars-erik andersson.

  1. 1. Process planning of resistance spot welding

    Författare :Oscar Andersson; Arne Melander; Lars-Erik Svensson; KTH; []
    Nyckelord :;

    Sammanfattning : Manufacturing engineering in general has experienced an increased demand of process planning in order to optimize processes to reduce costs, environmental impact and increase time efficiency. Resistance spot welding (RSW) is a common and large-scale joining method in several manufacturing industries indicating significant potentials of efficient process planning. LÄS MER

  3. 2. Fega pojkar pussar aldrig vackra flickor : Könsrelaterade ordspråk i nordnorrländsk agrarmiljö belysta ur språkligt och kulturellt perspektiv

    Författare :Daniel Andersson; Ann-Catrine Edlund; Lars-Erik Edlund; AnnaMalin Karlsson; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Ordspråk; kön; genus; hegemonisk maskulinitet; hegemonisk femininitet; kulturell modell; blending; metaforer; liknelser; norrland; jordbrukssamhälle; agrarmiljö; Scandinavian languages; Nordiska språk;

    Sammanfattning : This dissertation deals with 199 gender related proverbs that were collected in northern Sweden and were used in an agrarian environment, approximately between the beginning of the 19th century and the beginning of the 20th. The conceptions of gender which these proverbs convey also belong to the same time range and place. LÄS MER

  4. 3. Reconstruction of a stationary flow from boundary data

    Författare :Tomas Johansson; Lars-Erik Andersson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Cauchy problem; Generalized Stokes system; Ill-posed problems;

    Sammanfattning : We study a Cauchy problem arising in uid mechanics, involving the socalled stationary generalized Stokes system, where one should recover the ow from boundary measurements. The problem is ill-posed in the sense that the solution does not depend continuously on data.Two iterative procedures for solving this problem are proposed and investigated. LÄS MER

  5. 4. Process Understanding and Weldability of Laser-Powder Bed Fusion Manufactured Alloy 718

    Författare :Tahira Raza; Joel Andersson; Lars-Erik Svensson; Boris Alexandrov; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser-Powder Bed Fusion; Alloy 718; Process Parameters; Heat Treatments; Weldability; Hot Cracking; Varestraint Testing; Laser-pulverbäddmetoden; Legering 718; Processparametrar; Värmebehandlingar; Svetsbarhet; Varmsprickor; Varestraintprovning; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Laser-powder bed fusion (L-PBF) is an additive manufacturing (AM) process that involves building components by fusing fine metal powders using laser. There is no universal set of process parameters that can yield optimum results for all the different materials, geometries, and L-PBF machines. LÄS MER

  7. 5. Existence theorems for noncoercive incremental contact problems with Coulomb friction

    Författare :Andreas Rietz; Lars-Erik Andersson; Jaroslav Haslinger; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Coulomb friction; noncoercive; normal compliance; mollification; MATEMATIK; MATHEMATICS; MATEMATIK;

    Sammanfattning : Friction is a phenomenon which is present in most mechanical devices and frequently encountered in everyday life. In particular, understanding of this phenomenon is important in the modelling of contact between an elastic object and an obstacle. LÄS MER