Abstract:To further improve the Z-direction tensile properties of flexible oriented 3D braided composites, we proposed a new process for twisting Z-fibers. We found a pattern of increasing and then decreasing tensile strength after twisting fibers with different K-numbers, and the four bundles of 3K fiber with 20 twists/m had the strongest tensile performance, which increased by 29.06% compared with the untwisted. Scanning electron microscopy was used to observe the twisting morphology and hairiness statistics of fiber… Show more
“…This configuration amplifies the volume expansion of fibers when the fibers are exposed to external stimuli. [83][84][85] The fibers also become more compact, and a torque is generated in the fiber or yarn. 86 For twisted-fiber artificial muscles, a significant issue is preserving the torque and twist within the fiber; the preservation of this torque/twist determines whether the actuation of the artificial muscle is reversible or irreversible.…”
This review summarizes the recent progress in twisted-fiber artificial muscles with different methods for preserving the torque and the inserted twist, and explores the relevant applications.
“…This configuration amplifies the volume expansion of fibers when the fibers are exposed to external stimuli. [83][84][85] The fibers also become more compact, and a torque is generated in the fiber or yarn. 86 For twisted-fiber artificial muscles, a significant issue is preserving the torque and twist within the fiber; the preservation of this torque/twist determines whether the actuation of the artificial muscle is reversible or irreversible.…”
This review summarizes the recent progress in twisted-fiber artificial muscles with different methods for preserving the torque and the inserted twist, and explores the relevant applications.
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