Powder Bed Fusion (PBF), auch als Selektives Lasersintern (SLS) bezeichnet, ist eine Technologie zum schichtweisen Aufbau von 3D-Objekten, bei der ein Laserstrahl selektiv über einen vordefinierten Bereich der Pulverschicht fährt. Eines der dabei am häufigsten verwendeten Materialien ist PA12.
Powder Bed Fusion (PBF), also called Selective Laser Sintering (SLS), is the layer-by-layer construction technology of 3D objects, where a laser beam selectively traces over a predefined area on the powder layer. One of the most widely used materials is PA12.
In Powder bed fusion there is no flow and no shear rate. For powder coalescence, the local molecular motions and entanglements across the layers are important. So today, Dr. Natalie Rudolph will be focusing on the rotational rheometry.
Today, Dr. Natalie Rudolph will talk about the refreshing strategy for Powder Bed Fusion powders using Differential Scanning Calorimetry. In this episode, not the part properties, but the properties of the powder will be investigated.
Today, Dr. Natalie Rudolph will explain how the thermal diffusivity of a powder bed fusion part can be measured using Laser Flash Analysis (LFA) and how it can be computed in thermal conductivity.
Residual stress can lead to warpage of a 3D-printed part. Both Dynamic Mechanical and Thermomechanical Analysis are capable to estimate warpage. In this video, Dr. Natalie Rudolph explains, how the coefficient of thermal expansion (CTE), measured with Thermomechanical Analysis, can be used to predict and calculate warpage.
In our last episodes, we focused mainly on thermal material behavior measured with Differential Scanning Calorimetry (DSC). Today, Dr. Nathalie Rudolph will talk about how residual stresses can be estimated using Dynamic Mechanical Analysis (DMA).
In our previous episode, Dr. Natalie Rudolph informed about the isothermal measurements and their importance for process simulation. Today, we talk about measuring the specific heat capacity of Powder Bed Fusion Powder and what it is needed for.
Today’s focus is on the crystallization behavior in Polymer Powder Bed Fusion using Differential Scanning Calorimetry (DSC). Find out more about the time dependence of crystallization with the example of a semi-crystalline thermoplastic and learn about isothermal crystallization of Nylon PA12 powder.
Powder Bed Fusion (PBF) is one of the most used Additive Manufacturing technologies to produce structural plastic parts. Learn today how to determine the process window of Polymer PBF using thermal analysis.