Shape-memory metallic alloy damping body

Details Shape-memory metallic alloy damping body Shape-memory metallic alloy damping body

1993-08-17

1995-03-21

Oberleitner, Robert J.

Spring devices

Elastic extension devices

Compression spring

267182, 148402, F16F 100

Patent

active

053989163

ABSTRACT:
A metallic damping body for damping shock-type and/or periodically changing stresses, consists of a shape-memory alloy material for effecting the damping. In order to be able to achieve a high damping effect even under a high mechanical stress on the damping body, the shape-memory alloy is selected such that it is in a state of austenitic microstructure at the operating temperature of the damping body. A sufficiently high mechanical prestress is applied to the damping body so that the damping working range is within the range of the pseudoelastic strain which starts below the proportionality limit in the stress/strain diagram of the shape-memory alloy. When the damping body is compressively stressed, a multiplicity of closely adjacent, small, uniformly distributed voids are present in the interior thereof, which together make up at least about 5%, preferably about 15 to 40%, of the total volume of the damping body. This allows free movement of the material particles in the region of the individual grain boundaries even in the interior of the damping body.

REFERENCES:
patent: 3698264 (1972-10-01), York
patent: 4450616 (1984-05-01), Morita
patent: 4505767 (1985-03-01), Quin
patent: 4654092 (1987-03-01), Melton
patent: 4704968 (1987-11-01), Davis, Jr.
patent: 4874215 (1989-10-01), Montagu
Dampfungsvermogen von Formgedachtnis-Legierungen, pp. 215-217, ZwF 84 (1984)4, Dr. P. Tautzenberger.
Sensor, Stellglied und Antrieb, Erhard Hornbogen, Maschinenmarkt, Wurzburg 931198719, pp. 58-61.
Shape-Memory Materials, Technical File No. 179, P. H. Miles, Jul.-Aug. 1989, pp. 29-30.
Der Formgedachtnis-Effekt von Nickel-Titan-Legierungen, Dieter Stockel, Feinwerktechnik & Messtechnik 95 (1987), pp. 332-334.
Martensitic .beta..sub.1 .revreaction..beta.'.sub.1 and .beta..sub.1 .revreaction.'.sub.1 transformations in Cu-Al-Ni alloys under pressure V. V. Korin, V. V. Martynov and V. A. Chernenko, 1990 American Institute of Physics, pp. 379-380.
Die martensitische Phasenumwandlung und deren werkstofftechnische Anwendungen, Herausgegeben von E. Hornbogen und M. Thumann, Informationsgesellschaft, pp. 75-94.
Technische Rundschau, Feb. 1, 1991, pp. 30-37 and 39.
Damfungsvermogen von Formgedachtnis-Legierungen, Dr. P. Tautzenberger, Carl Hanser Verlag, Munchen 1989, pp. 215-217.
Metall Internationale Zeitschrift fur Technik und Wirtschaft, Dec. 1977, pp. 1325-1331.

Affiliated with

Also associated with

Rating

Shape-memory metallic alloy damping body does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shape-memory metallic alloy damping body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shape-memory metallic alloy damping body will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1144487