Internship LPBF Slicing and downskin improvement
NLR - Netherlands Aerospace Centre · NL
Development of an advanced Laser Powder Bed Fusion build file generation tool for producing homogeneous and predictable material Graduation project or intern...
Job description
Development of an advanced Laser Powder Bed Fusion build file generation tool for producing homogeneous and predictable material Graduation project or internship: Background: Additive Manufacturing (AM) technologies build products layer by layer using data directly from 3D CAD models. AM has high potential for improving the performance and reducing the weight of parts which is especially beneficial for aerospace applications. Reliable and predictable behaviour is essential for safety in aerospace applications. This internship project focuses on Laser Powder Bed Fusion (L-PBF) technology. With L-PBF, complex products are constructed layer-by-layer within a powder bed (see Figure 1). The metal powder is selectively molten by a laser beam. Dedicated software tools are used to generate a build file in which the applied process parameters and the laser scan pattern for each layer are defined. The complex design can easily cause large temperature variations during LPBF production which can result in variation of material properties, for example in overhanging structures and sharp corners trapping heat. Currently available software tools do not offer the required flexibility in generating...