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

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

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 ...

2022

Synthesis of Novel Integrated Actuators Powered by Shape Memory Alloys

Sean Thomas

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 ...

EPFL2022

Multi-Output Compliant Shape Memory Alloy Bias-Spring Actuators

Yves Perriard, Sean Thomas, Adrien Jean-Michel Thabuis, Thomas Guillaume Martinez

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 ...

IEEE2020

Shape Memory Effect of Benchmark Compliant Mechanisms Designed With Topology Optimization

Yves Perriard, Sean Thomas, Adrien Jean-Michel Thabuis, Thomas Guillaume Martinez

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 ...

IEEE2020

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

Yves Perriard, Sean Thomas, Morgan Almanza

This paper aims to adapt the well established Brinson model for the thermoelastic behaviour of the Shape Memory Effect (SME) so as to compare it to a custom shape memory material modelled using an finite element modelling software. In this work, the Brinso ...

IEEE2019

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

Albano António De Abreu E Presa De Castro E Sousa, Diego Isidoro Heredia Rosa, Masoud Motavalli, Dimitrios Lignos, Alexander Riley Hartloper

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 ...

2019

Shape memory polymers with controlled time-dependent shape recovery

Charly David Azra

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 ...

EPFL2013

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

Jonas Vannod

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 ...

EPFL2011