Daimler Chrysler Ag

Daimlerchrylser Ag

J&uuml;rgen Schnur

Silvia Tomaschko

Martin Hartweg

Rolf-Dirc Roitzheim

Ingo Borchers

Josef Michel

Ping Wang

J&uuml;rgen Frey

Ulrike-Christiane Huber

In a component having vibration-damping properties, a mixture for manufacturing the component, and a method of manufacturing such a component, the component has granular and/or grain- and/or flake-shaped piezoelectric particles which are embedded in a polymer matrix in a proportion of at least 10 volume %. In order to improve the damping effect, at least some of the piezoelectric particles have a polarization which is different from zero.

Component having vibration-damping properties, mixture for manufacturing the component, and method of manufacturing such a component

A method and a shaft bearing for influencing machine background noise emitted by at least by one rotating part of the machine, especially for influencing the background noise within a passenger compartment of a motor vehicle. The amplitudes and/or the frequencies of primary vibrations which cause the background noise are preferably lessened and/or supplemented by controlled external interventions. The mounting conditions between the shaft bearing and a rotating part held in the machine shaft bearing, especially a shaft, is varied by a radial adjustment unit having piezo elements. The transfer function of the vibrations, especially the vibrations producing the sound waves, present between the rotating part and the shaft bearing or a component in contact with the shaft bearing, is varied.

Method and apparatus for influencing background noise of machines having rotating parts

A sound generating or emitting machine having a component comprising a material with a high internal damping and tensile strength, the material comprising (1) a metallic base material, and (2) a metallic second phase with an at least partially martensitic structure. The material may also be an alloy comprising a base material in which additional alloy elements have a very low solubility.

Use of a material with a high internal damping for a component of a sound-emitting machine

Growing community of inventors

Ditzingen, Germany

Jürgen Schnur

Growing community of inventors

Ditzingen, Germany

J&uuml;rgen Schnur

Jürgen Schnur