Zusammenfassung
To achieve sustainable development in today's
production facilities, quality assurance of
manufacturing processes, such as laser welding is very
important. In particular, online monitoring for direct
detection of defective products is especially important.
To develop a method for detecting pores during the
process, this paper investigates the influence of pores on
the temperature field during laser beam welding of
AlMg3.
Numerical simulations were carried out to theoretically
investigate the influence of the pores in the weld seam
on the temperature field and experiments were carried
out to validate the simulations.
The simulations show a clear influence of the pores on
the temperature field, making the measurement of the
temperature field suitable as a detection method. The
detection of the pores from the measured thermal
radiation turned out to be difficult because of the huge
influence of the seam surface geometry on the
emissivity. Especially for an automatic data evaluation,
further research on sophisticated evaluation algorithms
is required.
Nutzer
