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Modelling by size effects on the time constant at the scaled laser beam forming (Vo 530/25-1)
A scaling according to the similitude theory is due to the not scalable material properties and the large influence of the boundary conditions for thermal forming processes in general not possible. The temperature development and the result of the forming process depend highly on the local thermal and mechanical resistances. This applies especially to micro alignment elements e.g. bridge actuators. In order that such units can be disposes in the mass production, it should be shown, which influences result in an optimal high forming reaction per process time and how this forming behaviour is affected by a geometrical scaling. Particularly, the cooling period till another thermal upsetting is possible take a central role. It could be shown that smaller actuators can be irradiated faster than it may be expected by conventional scaling rules. For large actuators the influential mechanism is the two-dimensional thermal conduction. In contrast to that, the influence of the linear scaled bridge distance is deciding for the temperature balance of the small actuators.
Funded by
DFG
Timeframe
2007/04/01 - 2009/07/31
Department Manager
Dipl.-Phys. Haiko von Rebenstock
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