Digitale Medien
s.l. ; Stafa-Zurich, Switzerland
Advanced materials research
Vol. 47-50 (June 2008), p. 262-265
ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
In this research permendur (49Fe-49Co-2V) and nickel were used to make a novelbimetal actuator. The actuator consists of a main body and core with energizing coil. The main bodyof actuator is made of annealed permendur with two magnetostrictive bimetal arms. Themagnetostrictive bimetal technique is used to enhance the small displacement of permendur. Staticand dynamic behaviors of the actuator are investigated at both, room temperature (RT) and 77 K.The actuator magnified the small displacement of permendur strip (1.8 µm) and large displacementof 9 and 5 µm are achieved at RT and 77 K, respectively when the coil was energized by ± 5 Acurrent. Additionally, it is found that resonance frequency of actuator is 1240 Hz at 77 K and 1125Hz at RT. Since the stiffness of actuator increases at 77 K, the displacement of actuator is reduced33-50% when the coil is energized with different amplitudes at cryogenic environments
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.262.pdf
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