Search for dissertations about: "Geometrical variation"

Showing result 1 - 5 of 54 swedish dissertations containing the words Geometrical variation.

2. 1. Variation simulation of sheet metal assemblies for geometrical quality : parameter modeling and analysis

   Author : Stefan Dahlström; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tolerancing; geometrical variation; variation simulation; sheet metal assembly; virtual verification; geometrical quality;

   Abstract : The automotive industry deals with an increased demand for virtual verification of the geometrical quality of the product. The aim is to reduce the need for adjusting the assembly process to deliver a product with high quality. READ MORE

4. 2. How to Reduce Geometrical Variation in Assembled Products

   Author : Johan Carlson; Göteborgs universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; 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; root cause;

   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

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

   Author : Ola S Wagersten; Chalmers tekniska högskola; []
   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

6. 4. Managing Geometrical Variation through Optimization and Visualization

   Author : Johan Lööf; Chalmers tekniska högskola; []
   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

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

   Author : Timo Kero; Chalmers tekniska högskola; []
   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