Design Analysis of a Shape Memory Alloy Bias-Spring Linear Actuator

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The influence of post-heat treatment on the microstructure and properties of 4D printed Fe-17Mn-5Si-10Cr-4Ni (wt. %) shape memory alloy (SMA) produced via a laser powder bed fusion process is investigated in this study. It is shown that heat-treatment temp ...

In the modern age of miniaturisation, Smart Materials, a type of material that reacts mechanically to a certain stimulus, have become an integral part of this revolution. Among these materials, Shape Memory Alloys (SMAs), which have the highest volumetric ...

This paper presents the proof-of-concept for a 4D printed active compliant hinge with a selectively variable stiffness for the deployment and reorientation of satellite appendages. We use 4D printing to create an active compliant hinge capable of bending t ...

Smart Materials such as Shape Memory Alloys (SMA) play a major role in creating Smart Actuators that are compact and high performing. Traditional SMA bias-spring actuators are only capable of a single linear output. Using topology optimization, compliant S ...

Shape Memory Alloys (SMA) are a class of Smart Materials that are ideal for creating compact actuators. The complex nature of their behavior results in the use of these materials in simple geometries (wires, sheets) limiting their performances. A design me ...

Shape memory alloys (SMAs) have gained considerable attention in a broad range of engineering applications. In particular, iron-based SMAs (Fe-SMAs) have been recently developed and used as a cost-effect method for prestressed-strengthening of civil struct ...

Thermally activated shape memory alloy (SMA) actuators are direct-driven and produce high power density with design versatility. However, beyond their linear actuation in spring forms there is little variety and their application in robotics is limited by ...

This paper presents a hybrid FEM-analytical model for the magnetic flux density, the force and torque of a Reaction Sphere (RS) actuator for satellite attitude control. The RS is a permanent magnet synchronous spherical actuator whose rotor is magnetically ...

The aim of this thesis has been to investigate the use of heat-activated shape memory polymers (SMPs) as novel smart actuators for the controlled delivery of fluids and their suitability for applications such as low-cost drug delivery. On heating to temper ...

The biomedical industry has an increasing demand for dissimilar metal joining processes, which are used for complex configuration designs, such as guidewires and other intravascular interventional devices. Their production becomes more and more challenging ...

We report the first measurements of a self-healing polymer that combines a microencapsulated liquid healing agent and shape memory alloy (SMA) wires. When a propagating crack ruptures the embedded microcapsules, the liquid healing agent is automatically re ...

Shape Memory Alloys (SMA) have been used in sculptures for quite some time. But only very few of these sculptures have gone on to earn wide recognition, mainly because the working conditions of the SMA must be carefully respected when sculptures are made. ...

Using the combinatorial material synthesis approach, materials libraries can be produced in one experiment that contain up to several thousand samples on a single substrate. In order to identify optimized materials in an efficient way using screening metho ...

Design Analysis of a Shape Memory Alloy Bias-Spring Linear Actuator

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Effect of post-heat treatment conditions on shape memory property in 4D printed Fe-17Mn-5Si-10Cr-4Ni shape memory alloy

Synthesis of Novel Integrated Actuators Powered by Shape Memory Alloys

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

Multi-Output Compliant Shape Memory Alloy Bias-Spring Actuators

Shape Memory Effect of Benchmark Compliant Mechanisms Designed With Topology Optimization

Behavior of iron-based Shape Memory Alloys under Cyclic Loading Histories

Modeling, Characterization and Control of a Novel Torsional Shape Memory Alloy (SMA) Actuator

Hybrid FEM-analytical force and torque models of a reaction sphere actuator

Shape memory polymers with controlled time-dependent shape recovery

Laser Welding of Nickel-Titanium and Stainless Steel Wires : Processing, Metallurgy and Properties

Performance of self-healing epoxy with microencapsulated healing agent and shape memory alloy wires

"The Unbearable Lightness of the Cube": Using SMA to Express Lightness, Movement and Memory in Sculptures

MEMS tools for combinatorial materials processing and high-throughput characterization