Results 121 to 130 of about 105,348 (313)

Multifunctional Position and Stiffness Control of Soft Fluidic Actuators Using Supercooled Liquid

open access: yesAdvanced Intelligent Systems, EarlyView.
This work explores the use of supercooled liquid as a multifunctional working fluid for soft actuators to allow independent control of position and stiffness; the solution is used to both inflate the elastomer chambers while in liquid state and to achieve a dramatic increase in stiffness (up to 13 times) with rapid, reversible crystallization.
Hoseung Seo, Michael T. Tolley
wiley   +1 more source

Strengthening by softening: Rigidity increase of a curved sheet from nonlinear regime of deformation [PDF]

open access: yesarXiv
It is well-known that a thin sheet held in a rigid circular clamp has a larger flexural strength than when it is flat. Here, we report that the flexural strength of curved sheets is further increased with a softening of the clamping condition. This unexpected compliance effect relates to the geometrical properties of curvature-induced rigidity that we ...
arxiv  

Monolithic Desktop Digital Fabrication of Autonomous Walking Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
A soft, monolithic, air‐powered walking robot is designed for autonomous operation. Fabricated in a single step using a desktop (FFF) fused filament fabrication 3D printer, the robot requires no manual postassembly and becomes immediately operational with a constant‐pressure air supply.
Yichen Zhai   +5 more
wiley   +1 more source

Personalized Kirigami Strain Sensors for in vivo Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
Rapid prototyping of strain sensors is demonstrated using a laser cutter that both converts carbon‐based material to strain responsible graphene and generates cuts in a kirigami‐style pattern that allows enhanced substrate flexibility. This method is used to generate wearable sensors for monitoring heart rate, limb/finger motion, and abdominal ...
Siheng Sean You   +7 more
wiley   +1 more source

The Influence of Excitation Method on the Strength of Glass Powder High-Strength Cementitious Materials

open access: yesBuildings
Recycling economy and the re-utilization of solid waste have become important parts of sustainable development strategy. To improve the utilization rate of waste glass, glass powder high-strength cementitious material (GHSC) was prepared by replacing ...
Bixiong Li   +3 more
doaj   +1 more source

Decreasing the Cost of Morphing in Adaptive Morphogenetic Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
Shape‐morphing propulsive limbs enhance locomotion across land‐to‐water transitions, but prior designs rely on thermally responsive components, coupling performance to environmental temperature. This study introduces a pressure‐responsive mechanism that reduces morphing energy costs, enables rapid transitions, and minimizes failure modes.
Luis A. Ramirez   +3 more
wiley   +1 more source

4D Printing of Polyethylene Glycol‐Grafted Carbon Nanotube‐Reinforced Polyvinyl Chloride–Polycaprolactone Composites for Enhanced Shape Recovery and Thermomechanical Performance

open access: yesAdvanced Intelligent Systems, EarlyView.
This study introduces polyethylene glycol‐functionalized carbon nanotubes (CNTs) to enhance dispersion, interfacial bonding, and 4D printability in polyvinyl chloride‐PCL nanocomposites. The optimized 4D composite (0.5 wt% CNT) achieves a 25% increase in tensile strength, 95.78% shape fixity, and 5‐s recovery time.
Davood Rahmatabadi   +6 more
wiley   +1 more source

Modeling heat transfer and transcrystallization kinetics during processing of polymer‐based composites materials

open access: yesPolymers for Advanced Technologies, Volume 34, Issue 2, Page 655-675, February 2023., 2023
Abstract Transcrystallization phenomena is a key issue to master for better understanding the role on the fiber‐matrix interface in composites materials behavior during and after processing. In this paper, a non‐isothermal kinetics model is presented to consider crystallization in fiber‐based composite with thermoplastic matrix.
Nicolas Bigot   +3 more
wiley   +1 more source

Spray binder for automated preforming: Spray process and preform properties

open access: yesPolymer Composites, Volume 44, Issue 1, Page 432-443, January 2023., 2023
Spray binder for automated preforming Abstract A closer look was taken at a spray binder and the properties of the preforms made with said binder and non‐crimp carbon fiber textiles. First the spray process was analyzed, then T‐peel and three point flexural tests were carried out to compare the spray binder to other binder systems.
Hendrik Möllers   +2 more
wiley   +1 more source

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