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Additive Manufacturing of Functional Materials and Active Structures to Enable 4-D Printing

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  • access_time 11:00 - 11:25 AM CT
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Laser Powder Bed Fusion (LPBF) is increasingly being used to create smart materials such as Shape Memory Alloys (SMA) in aerospace, automotive, and medical applications. Additive Manufacturing (AM) of these materials allows for the creation of novel geometries that would be impossible to create using standard methods while the fabrication of SMA using LPBF allows for the optimization of SMA behavior. Using Functionally Graded Materials (FGMs), on the other hand, has the potential to create superior SMA material properties. In FGMs the material is synthesized by gradually varying the material properties per layer to achieve varying material composition or microstructure.

FGMs in SMA produced by LPBF can be achieved by varying the processing parameters and temperature that significantly change the microstructure of SMA resulting in a different SME temperature. AM enables combining SMA with geometries that can be activated upon stimuli which paves the path for advancements in 4D-Printing, where materials and structure design are enabled. This talk will examine alternative ways for defining a practical AM processing routine for SMA with FGMs as well as offer insight into the type of active geometries enabled by LPBF.

Learning Objectives:

  • Upon completion, participants will be able to describe the effect of the AM processing parameters on the final shape memory alloy material properties.
  • Upon completion, participants will be able to define the role of functionally graded materials and active geometries in accelerating 4D Printing as a path spanning from AM.