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Keywords: actuator
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Proceedings Papers

Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T02A007, September 12–14, 2022
Paper No: SMASIS2022-90970
... Abstract Integration of shape memory alloys (SMA) into actuator systems is still challenging, since mechanically and electrically anchoring are needed to provide stroke and trigger the shape memory effect (SME) in a controlled manner. A direct connection of SMA wires with printed circuit boards...
Proceedings Papers

Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A012, September 12–14, 2022
Paper No: SMASIS2022-91015
... Abstract The concept of a new piezoelectric actuator design is the focus of an ongoing smart structures research at DLR. It envisages actuator geometries, that have their template in nature and are aimed at optimally transfering their mechanical power to the structure in which...
Proceedings Papers

Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A011, September 12–14, 2022
Paper No: SMASIS2022-91002
... effectiveness depends on the needle’s ability to travel on a curved path, avoid obstacles, and maintain high targeting accuracy. Conventional needles are passive and have limited steerability and trajectory correction capability. This has motivated researchers to develop actuation mechanisms to create active...
Proceedings Papers

Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A004, September 12–14, 2022
Paper No: SMASIS2022-90573
... Abstract Today, Nickel-Titanium (NiTi)-based shape memory alloy (SMA) wires are already used in a wide range of commercial actuator applications. The combination of their unique properties, such as their high energy density as well as their biocompatibility provides a broad range...
Proceedings Papers

Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A003, September 12–14, 2022
Paper No: SMASIS2022-90552
... Abstract For repeated actuation in shape memory alloy (SMA) actuators, a restoring force is needed to return to the initial starting position after activation. Therefore, SMA wires are often coupled with mechanical springs, which lengthen said wires again after activation through heating...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T02A001, September 15, 2020
Paper No: SMASIS2020-2214
...Abstract Abstract This paper presents a novel shape memory alloy (SMA) valve actuator concept for active venting in injection molding applications. The developed system can be used to expel air which is trapped during the injection molding process. If such air bubbles are not properly removed...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T03A016, September 15, 2020
Paper No: SMASIS2020-2427
...DEADBANDS TELL NO TAILS: X-56A DYNAMIC ACTUATION REQUIREMENTS Alexander M. Pankonien1, Peter M. Suh2, Jacob R. Schaefer2, Robert M. Mitchell1 1Air Force Research Laboratory, WPAFB, OH, USA 2NASA Armstrong Flight Research Center, Edwards, CA, USA ABSTRACT Following significant effort over the past...
Proceedings Papers

Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A015, September 15, 2020
Paper No: SMASIS2020-2260
...DATA ANALYTICS SUPPORTED QUALITY CONTROL OF SERIAL-PRODUCED SMA- ACTUATORS FOR SPACE APPLICATIONS Robin Roj1, Ralf Theiß, Peter Dültgen Forschungsgemeinschaft Werkzeuge und Werkstoffe e.V. Remscheid, Germany Florian Schummer, Jakob Bachler, Roland Konlechner, Sebastian Würl Lehrstuhl für...
Proceedings Papers

Proc. ASME. SMASIS2019, ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T02A002, September 9–11, 2019
Paper No: SMASIS2019-5503
... are of great interest for unlocking mechanisms or other kinds of actuators. One of the challenges of the application of shape memory alloys (SMA) is the small deformation factor that prevents actuations with large travels. A second property that is usually seen as a disadvantage is the thermal dependence...
Proceedings Papers

Proc. ASME. SMASIS2019, ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T01A009, September 9–11, 2019
Paper No: SMASIS2019-5685
... of the paper actuation and results using continuous CNTs of a CNT-array. For the first test series specimens are cut off a paper manufactured of single-walled, μ-long CNTs working in series. The second test series uses specimens which are prepared of free standing multi-walled CNTs. Their CNT lengths reach...
Proceedings Papers

Proc. ASME. SMASIS2019, ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T03A010, September 9–11, 2019
Paper No: SMASIS2019-5627
... NACA profile in composite material is discussed and the simulations results coming from finite element analyses in frequency and time domains are presented. Keywords: De-icing, composite, piezoelectric, leading edge, impedance, actuator. 1. INTRODUCTION The ice accretion on aircraft surfaces represents...
Proceedings Papers

Proc. ASME. SMASIS2008, Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 19-29, October 28–30, 2008
Paper No: SMASIS2008-373
... 24 08 2009 nI m tu lp un a e sure for the material: the R-Curve. On top, the dynamic response of the system was evaluated in different states of the actuator. A model was ge system. At last built and tested, in aqueous elect Keywords: act 1 Introductio An essentia ator, which indu change...