• Martin Munk Søndergaard
  • Kasper Mygind Madsen
4. semester, Virksomhedsteknologi, Kandidat (Kandidatuddannelse)
The objective of the master thesis is to develop a framework for the laser forming process, which enables the production of a set of desired single and double curved geometries. The framework is based on a feedback loop which utilises the required amount of strain to go from current geometry to the desired geometry. A scan path algorithm is developed, which determines the placement of the scan paths. As the laser forming process induces compressive strains perpendicular to a given scan path, it is desirable to place the scan paths perpendicular to the orientation of the minimum principal strains. Based on a ratio between bending and in-plane strains, a suited forming mechanism is selected for the scan path. The forming mechanisms are predefined with regards to laser power and laser beam diameter, while the scan speed is selected as the control variable and adjusted as a function of the required strains. The ramework iterates until a stop criterion is met, which is based on the sum of absolute error between the obtained geometry and the desired geometry. The geometries obtained by use of the framework exert the appearance of the chosen set of desired single and double curved geometries. Thereby, validating the potential of the developed framework. However, deviations between the obtained and the desired geometries are present, why improvements are required. The developed framework allows the production of double curved geometries. However, further work is required to ensure that the process limitations are properly established and that the developed framework functions correctly in a physical setup.
Udgivelsesdato3 jun. 2014
Antal sider79
ID: 198478092