Material Science in Additive Manufacturing: Melt Rheology in Material Extrusion Using Capillary Rheometry

In this episode, will correlate the results that are relevant for the filament extrusion to the melt rheology inside the material extrusion head using the capillary rheometer.

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Material Science in Additive Manufacturing: Relevant parameters for production of filament

Based on our past episode about analysis methods used in material extrusion (ME), we are going to talk about the relevant parameters for production of the filament used in ME today. Learn how to measure the shear-dependent viscosity using the ROSAND capillary rheometer.

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Material Science in Additive Manufacturing: Analysis Methods Used in Material Extrusion

Material extrusion is an additive manufacturing process in which material is selectively dispensed through a nozzle or orifice. Today, Dr. Natalie Rudolph will be focusing on analysis methods used in material extrusion (ME).

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Material Science in Additive Manufacturing: Melt Rheology in PBF Using Rotational Rheometry

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.

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Material Science in Additive Manufacturing: Evaluation of Refreshing Strategy of PBF Powder using DSC

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.

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Why the Effect of Anisotropic Fillers on Thermal Expansion is Process-Dependent

Fillers are added to a polymer matrix to improve the mechanical performance of the finished product. The orientation of such fillers depends on the processing conditions. Learn how the overall content, shape and orientation of copper fibers influence the coefficient of thermal volume expansion.

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Material Science in Additive Manufacturing: Measuring Thermal Diffusivity using LFA

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.

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How Fillers Increase Isotropic or Anisotropic Behavior of SLS Parts through Their Alignment

In general, the addition of fillers leads to an increase in mechanical performance. While a critical length of the fillers is needed to have an effect on the strength of components, the stiffness is already increased with fillers with small aspect ratios. To understand how the stiffness or modulus change as a function of the filler geometry and filler content, Dynamic Mechanical Analysis (DMA) can be used. Learn more in our article!

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Material Science in Additive Manufacturing: Warpage Prediction of PBF Parts Using CTE

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.

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Material Science in Additive Manufacturing: Estimating Residual Stresses in PBF Parts Using Dynamic Mechanical Analysis

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).

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