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Keywords: Shape Memory Alloys
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Proceedings Papers

Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T01A005, September 14–15, 2021
Paper No: SMASIS2021-67651
... coordinates, m geometric nonlinearity and superelasticity, the use of a new pseudo-rigid body model is proposed. The model incorporates x1, x2 phase transition points in x-direction, m the mechanics of shape memory alloy (SMA) behavior in a folding C3M design. The combined application of pseudo-rigid ytr,1...
Proceedings Papers

Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T05A016, September 14–15, 2021
Paper No: SMASIS2021-68259
... Proceedings of the ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems SMASIS2021 September 14-15, 2021, Virtual, Online SMASIS2021-68259 DEVELOPMENT OF A RELEASABLE SNAP-FIT CONNECTOR BASED ON SHAPE MEMORY ALLOY ACTUATORS Kenny Pagel Arne Wiechmann Welf-Guntram...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T03A013, September 15, 2020
Paper No: SMASIS2020-2396
...Abstract Abstract A phenomenological model is proposed for shape memory alloys considering the presence of uniformly distributed voids. The model is developed within a modified generalized standard materials framework, which considers the presence of constraints on the state variables...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A012, September 15, 2020
Paper No: SMASIS2020-2255
..., and in addition to high costs. The main objective of this paper is to prove that pseudoelastic shape memory alloys (SMA) are potentially suitable for use in sports and rehabilitation equipment and offer additional value in the area of training flexibility combined with high training resistance. Therefore...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A016, September 15, 2020
Paper No: SMASIS2020-2280
...Abstract Abstract In this paper, a shape memory alloy (SMA) based handling system is presented. The gripping system consists of two different actuator systems based on SMA wires. The first one is a reconfigurable end-effector with four independent gripping arms. The second SMA actuator system...
Proceedings Papers

Proc. ASME. SMASIS2019, ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T08A006, September 9–11, 2019
Paper No: SMASIS2019-5661
... to impact or variable air permeability. Active textiles are traditional textile structures that integrate smart materials, such as shape memory alloys, shape memory polymers, or carbon nanotubes, to enable spatial actuation behavior, such as contraction for on-body compression or corrugation for haptic...
Proceedings Papers

Proc. ASME. SMASIS2013, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A012, September 16–18, 2013
Paper No: SMASIS2013-3183
... The effect of precipitation on the thermo-mechanical properties of Ni-rich near-equiatomic NiTi Shape Memory Alloys (SMAs) is investigated via the finite element method. The thermo-mechanical response is simulated using a Representative Volume Element (RVE), which takes into account...
Proceedings Papers

Proc. ASME. SMASIS2013, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A014, September 16–18, 2013
Paper No: SMASIS2013-3187
... In this work, the effect of thermo-mechanically-induced global phase transformation (actuation) on the crack driving force in Shape Memory Alloys (SMAs) is investigated by means of the finite element method. The prototype problem of an infinite center-cracked SMA plate is analyzed during...
Proceedings Papers

Proc. ASME. SMASIS2013, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A024, September 16–18, 2013
Paper No: SMASIS2013-3337
... Shape memory alloy (SMA) actuator wires promise substantial size, weight, and potential cost advantages over their solenoid and electric motor counterparts. Designing actuators which fully realize these advantages is hampered by a limited understanding of how interactions between wires...
Proceedings Papers

Proc. ASME. SMASIS2013, Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T02A016, September 16–18, 2013
Paper No: SMASIS2013-3200
... Shape Memory Alloy (SMA) composites are being increasingly investigated to address a variety of engineering problems. An application of growing interest is an SMA-MAX phase ceramic composite for use in extreme environments. By joining these two constituents, it is intended that the martensitic...
Proceedings Papers

Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 69-77, September 19–21, 2012
Paper No: SMASIS2012-7969
... A new hybrid shape memory alloy (SMA)-ceramic composite is being developed for use in extreme environments. The proposed composition is intended to address past issues with brittle failure in the ceramic phase by generating a compressive residual stress state in that phase. This biasing load...
Proceedings Papers

Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 1-7, September 19–21, 2012
Paper No: SMASIS2012-7912
... A finite-element analysis of stable crack growth in superelastic Shape Memory Alloys (SMAs) is carried out for plane strain, mode I loading. The small-scale transformation assumption is employed in the calculations using displacement boundary conditions on a circular region that encloses...
Proceedings Papers

Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 237-248, September 19–21, 2012
Paper No: SMASIS2012-8188
... In this work, the influence of the latent heat of transformation and heat transfer on the performance of shape memory alloy (SMA) actuators is numerically explored. A 1D analytical model is first considered and used to perform parametric studies on the effects of geometry and heat transfer...
Proceedings Papers

Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 441-450, September 18–21, 2011
Paper No: SMASIS2011-5083
... The capability of using recoverable martensitic transformation to modify the residual stress-state of hybrid Shape Memory Alloy (SMA) composites is explored. It is shown that through careful selection of a thermomechanical loading path the composite can be “processed” such that the constituent...
Proceedings Papers

Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 659-664, September 18–21, 2011
Paper No: SMASIS2011-5199
... Nickel-titanium shape memory alloys (SMA) are utilized to achieve a multi-band RF (radio frequency) antenna through reconfiguration. Switches made from shape memory alloys electronically connect together a planar antenna arrangement, creating several electrical signal pathways...