Search for dissertations about: "geometrical variation"

Showing result 21 - 25 of 54 swedish dissertations containing the words geometrical variation.

  2. 21. Individualizing assembly processes for geometric quality improvement

    Author : Abolfazl Rezaei Aderiani; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Selective Assembly; Individualization of production; Locator Adjustments; sheet metal assembly processes; Variation Simulations; Geometry Assurance;

    Abstract : Dimensional deviations are a consequence of the mass production of parts. These deviations can be controlled by tightening production tolerances. However, this solution is not always desired because it usually increases production costs. READ MORE

  4. 22. Design For Manufacturing and Producibility in Fabricated Aerospace Structures

    Author : Julia Madrid; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DFM; Producibility; Process Capability Data; Welding.; Variation Management;

    Abstract : Aircraft component suppliers must adopt new design strategies in order to absorb market growth and become more competitive at the same time as they satisfy environmental demands. To deal with this situation, weight reduction has been the key to success and have made jet engines more fuel efficient. READ MORE

  5. 23. Computational Methods for Design, Planning and Verification regarding Deformable 1D Objects

    Author : Tomas Hermansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; production planning; simulation of deformable 1D objects; variation analysis; non-linear optimization; path planning; assembly verification; routing design;

    Abstract : The industry of today is focused on using virtual tools in the realization of new products. As late changes in a design and planning concept can be extremely costly, there are many benefits to discovering and addressing problems as early as possible: fewer iterations between the different product realization phases and shorter lead-times, reduced numbers of physical prototypes and test series, fewer on-line adjustments in the production system and, in the end, a product of a higher quality. READ MORE

  6. 24. Exploring Probabilistic Reasoning : A Study of How Students Contextualise Compound Chance Encounters in Explorative Settings

    Author : Per Nilsson; Inger Wistedt; Lennart Hellström; Dave Pratt; Växjö universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Probabilistic reasoning; randomness; compound chance encounters; contextualisation; differentiation; elaborative variation.; MATHEMATICS; MATEMATIK; Matematikdidaktik; Mathematical Education;

    Abstract : This thesis aims at exploring how probabilistic reasoning arises in explorative learning situations that are random in nature. The focus is especially on what learners with scant experience of formal theories of probability do and can do when dealing with compound random situations in which they are offered opportunities to integrate different probabilistic lines of reasoning. READ MORE

  7. 25. Increased Visual Quality through Robust Split-Line Design

    Author : Andreas Dagman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Split-Line; Simulation; Visual Quality Appearance; Quality; Tolerance Analysis;

    Abstract : In the early phases of the product development process, the initial product geometry can be a non-divided shape, just a shell. This initial product geometry has to be divided into individual parts in order to manufacture and fulfil the functionality of the product. In the case of automobiles, these parts can be fenders, doors, hoods, etc. READ MORE