Search for dissertations about: "maintenance of variation"

Showing result 1 - 5 of 112 swedish dissertations containing the words maintenance of variation.

  1. 1. How to Reduce Geometrical Variation in Assembled Products

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Johan S Carlson; Göteborgs universitet.; Gothenburg University.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; assembled products; body-in-white BIW ; dimensional variation; geometrical variation; fixtures; fixture diagnosis; locating schemes; multivariate analysis; rigid body motion; robust design; root cause; quality;

    Abstract : Vehicle problems, such as wind noise, water leakage and door closing effort are examples of quality and functionality defects that are controlled by the dimensional accuracy of the structural frame of an auto body. The aim of this thesis is towards methods for reducing geometrical variation in assembled products in the automotiv other industries. READ MORE

  2. 2. Managing Geometrical Variation through Optimization and Visualization

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Johan Lööf; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; variation simulation; tolerancing; Tolerance allocation; locating scheme optimization; geometry assurance; visualization of variation; tolerance analysis;

    Abstract : All manufacturing processes are afflicted by variation that causes deviations in critical dimensions in the final product. Geometrical variation results in form and size deviation in individual parts. Assembly variation comes from defects in assembly equipment, and influence how parts are mounted together. READ MORE

  3. 3. Visualizing the Effects of Geometrical Variation on Perceived Quality in Early Phases

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Ola S Wagersten; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometrical variation; geometry assurance; non-rigid; product development; tolerance analysis; variation simulation; visualization and evaluation.; perceived quality;

    Abstract : In a perfect world, geometrical variation in a manufacturing process would not exist. Every component produced in a series would have the exact same dimensions and, when observed by a trained eye, look exactly identical. However, the world is not perfect and neither are manufacturing processes. READ MORE

  4. 4. Studying ageing: experiences, description, variation, prediction and explanation

    University dissertation from Göteborg : University of Gothenburg

    Author : Bo G. Eriksson; Göteborgs universitet.; Gothenburg University.; [2010]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Gerontology; Demography; Longevity; Health promotion; Social facts; Sense of cohesion; Population; Random sample.;

    Abstract : The study follows a line of experiences, description, variation, prediction and explanation concerning ageing, health promotion and longevity. The experiences of aging were acquired during my studies of conversations, participation in longitudinal population studies in Gothenburg, and working with the Centre for Development of Home help services. READ MORE

  5. 5. Managing the Effect of Manufacturing Variation in Medical Treatments

    University dissertation from Göteborg : University of Gothenburg

    Author : Timo Kero; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioengineering; Variation simulation; biomedicine; medicine; geometrical quality; virtual verification; mass-customization.; robust design;

    Abstract : To stay competitive in the market today, biomedical manufacturing companies must shorten their product realization time. These companies also deal with an increased demand for medical applications of high quality, from both the perspectives of user, government and internal requirements. READ MORE