Abstract
Improvements in multifunctional materials have led researchers to reinvigorate traditional textile structures by integrating emerging material technologies to offer novel solutions to diverse industries. However, there exist few multifunctional materials capable of being produced with micrometer diameters that can be spun into yarns for textile manufacturing, limiting the wearability and tunability of multifunctional textiles. Here, the creation of nickel-titanium (NiTi) smart material-based yarns is enabled by the availability of small diameter (≤10 µm) NiTi filaments that can survive the yarn spinning manufacturing process. NiTi microfilament yarns exhibit traditional superelastic and shape memory properties, and afford additional improvements to mechanical performance such as a tunable structural stiffness, plateau strength, and actuation contractions through the introduction of controllable geometric parameters—yarn count, surface twist angle, and manufacturing strains. This work concludes in a densely knitted, closed-form textile with shape memory actuation and superelastic recovery. NiTi microfilament yarns and textiles have promising impacts in actuating and energy-absorbing technologies for medical, robotics, aerospace, and defense applications.
| Original language | English (US) |
|---|---|
| Article number | 1901146 |
| Journal | Advanced Materials Technologies |
| Volume | 5 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 1 2020 |
Bibliographical note
Funding Information:This work was supported by an Industrial Partnership Grant with Fort Wayne Metals and Minnesota's Discovery, Research, and InnoVation Economy Robotics, Sensors, and Advanced Manufacturing (MnDRIVE RSAM) Initiative. The authors thank the Wearable Technology Laboratory at the University of Minnesota for the use of their Instron machine for the mechanical experiments, the Polymer Characterization Facility at the University of Minnesota for the use of their DMA, and P. Sims and T. Hamilton at Fort Wayne Metals for their help on developing NiTi microfilaments.
Funding Information:
This work was supported by an Industrial Partnership Grant with Fort Wayne Metals and Minnesota's Discovery, Research, and InnoVation Economy Robotics, Sensors, and Advanced Manufacturing (MnDRIVE RSAM) Initiative. The authors thank the Wearable Technology Laboratory at the University of Minnesota for the use of their Instron machine for the mechanical experiments, the Polymer Characterization Facility at the University of Minnesota for the use of their DMA, and P. Sims and T. Hamilton at Fort Wayne Metals for their help on developing NiTi microfilaments.
Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Keywords
- NiTi
- actuators
- energy absorbers
- multifunctional yarns
- shape memory alloys
