Shape memory actuators - potentials and specifics of their technical use and electrical activation

• Autorzy: Strittmatter J. , Gümpel P. , Gheorghita V.
• Języki publikacji: EN

Abstrakty

EN

Due to a martensitic phase change shape memory alloys can revert to their original shape by heating when they undergo an appropriate treatment. Actuator elements with this shape memory effect can show a significant design change combined with a considerable force. Therefore they can be used to solve many technical tasks in the field of actuating elements and mechatronics. These intelligent materials will play an increasing role in the next years, especially within the automotive technology, energy management, power and mechanical engineering as well as medical technology. In order to use the potential of these materials in an optimal way it is necessary to know and understand the extraordinary and unconventional properties of shape memory alloys. This paper will present the commonly used systems of shape memory alloys of today including their performance characteristics and will explain the basics of the shape memory effect in a vivid way. A multitude of application possibilities of shape memory actuators will be presented, in particular the research and development projects that have been carried out at the Konstanz University of Applied Sciences during the last years. In this way a solid state heat engine and an intramedullary nail for bone elongation will be presented as well as various adaptive systems for automotive safety and comfort systems, driven by shape memory elements. Regarding the applications in the automotive field a special focus will be given to different electrical activations to enable very fast contraction times of the shape memory components.

Słowa kluczowe

EN

shape memory actuators; shape memory alloys; NiTi; shape memory applications

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 368--377
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Strittmatter J.

• HTWG - Hochschule Konstanz University of Applied Sciences, Konstanz, Germany
• WITg - Institut für Werkstoffsystemtechnik Thurgau an der Hochschule Konstanz, Tägerwilen, Switzerland

autor

Gümpel P.

• HTWG - Hochschule Konstanz University of Applied Sciences, Konstanz, Germany
• WITg - Institut für Werkstoffsystemtechnik Thurgau an der Hochschule Konstanz, Tägerwilen, Switzerland

autor

Gheorghita V.

• HTWG - Hochschule Konstanz University of Applied Sciences, Konstanz, Germany
• University Transilvania of Braşov, Braşov, Romania

Bibliografia

• [1] J. Strittmatter, Formgedächtnis-legierungen und ihre Einsatzmöglichkeiten in der Praxis - Allgemeine Anwendungsbeispiele in der Technik und ausgewählte Forschungsprojekte der FH-Konstanz, P. Gümpel (Ed.), Formgedächtnislegierungen - Einsatzmöglichkeiten in Maschinenbau, Medizintechnik und Aktuatorik, expertverlag Renningen, Kontakt&Studium, 2004 (in German).
• [2] D. Stöckel, Formgedächtnis-legierungen, D. Stöckel (Ed.), E. Hornbogen, Legierungen mit Formgedächtnis, expertverlag, Ehningen, 1988 (in German).
• [3] M. Mertmann, The physical properties of nitinol, http://www.memry.com/nitinol-iq/nitinol-fundamentals/physical-properties, 31.07.2012.
• [4] S. Langbein, Potential von standardisierten Formgedächtniskomponenten, Expertenforum des FGL-Netzwerks, Einblicke in die Formgedächtnistechnologie, Dresden, 2012 (in German).
• [5] P. Gümpel, J. Strittmatter, A. Walter, Prüfanlage für Bauelemente aus Formgedächtnislegierungen (FGL), Proceedings of the „DGM-Tagung Werkstoffprüfung“, Neu-Ulm, 2007, 305-310 (in German).
• [6] Memry Corporation, http://www.memry.com/nitinol-iq/nitinol-fundamentals, 31.07.2012.
• [7] T. Boes, P. Gümpel, J. Strittmatter, A. Walter, Entwicklung einer Prüfanlage zur Prüfung von Bauelementen aus Formgedächtnismetallen (FGL), Hochschule Konstanz Technik Wirtschaft und Gestaltung Forum (2006/2007) 24-31 (in German).
• [8] S. Gläser, P. Gümpel, H. Kilpert, J. Strittmatter, Investigation of the mechanism of the stress-induced martensitic phase transformation of superelastic shape memory alloys, Proceedings of the International Conference on “Shape Memory and Superelastic Technologies” SMST’2004, BadenBaden, 2004, American Society for Metals ASM International, Materials Park, Ohio, 2006, 57-68.
• [9] J. Strittmatter, P. Gümpel, Investigation of long-time aged niti shape memory actuator wires for future use in automotive safety systems, Proceedings of the 12th International Conference “New Actuators and Drive Systems” ACTUATOR’2010, Bremen, 2010, 921-924.
• [10] J. Strittmatter, V. Gheorghita, P. Guempel, Shape memory wires with activation times less than one second, Proceedings of the XXVI International Scientific Conference “microCAD”, University of Miskolc, Hungary, 2012.
• [11] V. Gheorghita, P. Guempel, A.E. Ceron, J. Strittmatter, Controlling the stroke of shape memory actuator wires, B. Katalinic (Ed.), Danube Adria Association For Automation & Manufacturing International Scientific Book, Vienna, 2011, 563-572.
• [12] J. Strittmatter, P. Gümpel, Long-time stability of Ni-Ti-shape memory alloys for automotive safety systems, Journal of Materials Engineering and Performance 20/4 (2011) 506-510.
• [13] T. Kotitschke, Experimentelle Untersuchung eines NiTiCu-Drahtes zur thermodynamischen Betrachtung einer Wärmekraftmaschine mit Formgedächtnis-metallen, Diploma thesis at the Hochschule für Technik, Wirtschaft und Gestaltung, 1998 (in German).
• [14] U. Berg, Weiterentwicklung des SchrägscheibenFormgedächtnismotors, Diploma thesis at the Hochschule für Technik, Wirtschaft und Gestaltung, 1999 (in German).
• [15] P. Gümpel, J. Strittmatter, A. Walcher, Wärmekraftmaschine und System, Patent application 10 2009 040 523.2, 2009 (in German).
• [16] A. Rüter, D. Kohn, J. Corell, R. Brutscher, Kallusdistraktion, Urban und Schwarzenberg-Verlag, 1998 (in German).
• [17] A. Betz, Voll implantierbarer aktiver Marknagel, A. Rüter (Ed.) Kallusdistraktion, Urban und Schwarzenberg-Verlag, 1998 (in German).
• [18] P. Gümpel, H. Hütterer, H. Kühn, J. Strittmattter, Antriebseinrichtung mit einem aus einer Formgedächtnislegierung geformten Element sowie deren Verwendung, patent application DE 198 10 640 C 2, 2000 (in German).
• [19] T. Boes, P. Gümpel, J. Strittmatter, Implantatvorrichtung zur Gewebe- und/oder Knochendistraktion sowie Verfahren zum Betreiben einer solchen, patent application 10 2007 036 359.3, 2007 (in German).
• [20] P. Gümpel, R. Storz-Irion, J. Strittmatter, Marknagel zur Knochenverlängerung mit intelligenter Sensorik, patent application 10 2008 035 517.8, 2008 (in German).
• [21] R. Storz-Irion, P. Gümpel, J. Strittmatter, I. Irion, J. Keller, F. Schiedel, Aktives Marknagelimplantat mit intelligenter Sensorik zur Knochendistraktion, Proceedings of the Internationales Forum Mechatronik ifm, Stuttgart, Tagungsband, 2008, 116-125 (in German).
• [22] K. Pagel, Einsatz von Formgedächtnislegierungen im Automobil, Proceedings of the Expertenforum des FGL-Netzwerks, Einblicke in die Formgedächtnistechnologie, Dresden, 2012 (in German).
• [23] http://mercedes-benz-blog.blogspot.de/2010/03/new-mercedes-benz-e-class-cabriolet_6980.html, accessed on 31.07.2012.
• [24] V. Gheorghita, P. Gümpel, T. Heitz, M. Senn, J. Strittmatter, Shape memory alloys open new possibilities in automotive safety systems, Proceedings of the 13th “European Automotive Congress” EAEC’2011, Valencia, 2011.
• [25] T. Heitz, Analysis of using CFK-Material for steering column components in passenger vehicles, Proceedings of Conferences on “Automotive and Transport Engineering” CONAT’2010, Brasov, 2010, 245-253.