Project details

Optimization of selective laser sintering process

Published by: Sharebot

Status: CLOSED


Application domain: Manufacturing

Budget (EUR): UP TO 15000

Project description

Selective laser sintering (SLS) is a 3D printing technique based on the sintering of powdered material. A laser beam is pointed to a plane layer of powder to bind the material into a solid structure in selected points.
After the current layer of powder has been sintered, a new layer is deposed above. During the printing process, all the material is kept warmed by an additional source of thermal radiation and air ventilation is forced.

An accurate calibration of the process (laser power, external thermal source, ventilation etc.) is essential to guarantee the quality of the printed object. For instance, an excess of laser power will melt the powder while a lack of power compromises the structural properties of the final object. Moreover the thermal process may lead to non-plain layers, that bend the printed object. The power needed depends on the parts that are printed: the border requires a different power with respect to the inner parts.

The objective is to optimize the process to ensure the quality of the printed objects.

Project goal

The objective of the project is to optimize the process with respect to the quality of the printed objects.
An intermediate goal is to understand how the process parameters and the shape of the objects are related to the quality of the final product. A model of the physics of the process seems to be the way to achieve the project goals.