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.

In the last videos, residual stress and warpage were investigated using the thermal analysis methods of DMA and TMA. Now, we move to thermal diffusivity of parts printed with the Additive Manufacturing technology Polymer Powder Bed Fusion (PBF).

This week’s topic: Measuring Thermal Diffusivity using Laser Flash Analysis (LFA)

In the LFA, a light pulse heats the front surface of a plane-parallel sample and the resulting temperature rise at the sample´s rear face is recorded as a function of time. The higher the thermal diffusivity, the faster the temperature rise reaches the rear face.

Learn about:

  • The Laser Flash analysis method and the effects that can be studied with this method
  • How fillers enhance thermal conductivity
  • How to prepare samples for LFA 467 HyperFlash® measurements
  • How to compute the thermal conductivity of parts printed with Polymer PBF

More Additive Manufacturing applications by NETZSCH

Missed an episode? Learn more about Additive Manufacturing by watching our series on YouTube: #ambynetzsch – YouTube
In our next video, we will talk about the evaluation of refreshing strategy of PBF powder using DSC.

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