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New cutting processes for single crystalline Ni-Mn-Ga actuator elements

Neue Schneidverfahren für einkristalline Ni-Mn-Ga Aktorelemente
: Böhm, Andrea; Groß, Stefan; Schneider, Jörg; Drossel, Welf-Guntram; Pagounis, Emmanouel; Laufenberg, Markus

Borgmann, Hubert ; Wirtschaftsförderung Bremen GmbH -WFB-:
Actuator 2014, 14th International Conference on New Actuators & 8th International Exhibition on Smart Actuators and Drive Systems. Conference Proceedings : 23-25 June 2014, Bremen, Germany
Bremen: Messe Bremen, 2014
ISBN: 978-3-933339-23-2 (CD-ROM)
ISBN: 978-3-933339-22-5 (Print)
ISBN: 978-3-933339-24-9 (Print + CD-ROM)
International Conference on New Actuators <14, 2014, Bremen>
International Exhibition on Smart Actuators and Drive Systems <8, 2014, Bremen>
Fraunhofer IWU ()
Ni-Mn-Ga; cutting; actuator elements; surface roughness; magnetic-field induced strain

For the production of Ni-Mn-Ga single crystalline actuator elements dicing technique was applied and compared to wire erosion technology. In the present paper a cutting strategy and different possible technologies for machining of Ni-Mn-Ga actuator elements are introduced. The quantitative determination of the surface roughness for the cutting technologies used was performed. The different cutting technologies are classified with regard to applicability for different Ni-Mn-Ga material thicknesses. The results of magnetic-field induced strain measurements in wire eroded and diced Ni-Mn-Ga actuator elements are shown and discussed with respect to cutting edge quality.