Скачать или смотреть Experiment on Shape Memory of PETG, UNL, Nov. 1, 2024 (2)

We programmed a deformation into a PETG bar by heating it in 80℃ water, and then bending it. We then froze the shape by rapidly moving it into room temperature water. Then we initiated the shape recovery by taking the bent sample and putting it into water at 75℃ and observed it unbend.

PETG 3D-printed samples are rectangular samples of dimensions 2mmx10mmx40mm. They are filled concentrically.

Temperature was controlled using Sous Vides in a 12L container.

Programming Jig: We 3D-printed an ABS Plastic jig to hold the sample and allow us to bend the sample into a specific shape.

Recovery Jig: We 3D-printed an ABS Plastic Jig to hold the sample as it recovers. There are degree markings to measure the shape recovery.

This was funded by NSF Project # (will update with the number at a later time.)

PETG:
Creality, CR Series 3D Printing Filaments, Black, 1.75mm Diameter, 230-250 ℃ Print Temp

3D-Printer:
Bambu Lab X1-Carbon

#shapememory