Eads Deutschland Gmbh

Daimler Chrysler Ag

Daimlerchrysler Corporation

Airbus Deutschland Gmbh

Deutsche Aerospace Ah

Airbus Operations Gmbh

Airbus Corporation

Werner Zimmermann

Juergen Silvanus

Peter Jänker

Wolfgang Lauer

Juergen Halm

Hans-Friedrich Siegling

Didier Simonet

Willi Martin

Ulrich Leinweber

Klaus Raether

Klaus Drechsler

Rolet Sebastien

In a method of measuring stress/strain by detecting Barkhausen noise, an exciting/sensing device is arranged at least adjacent to a magnetic or magnetizable element, and passing an increasing magnetizing current through the exciting device. The start of the Barkhausen noise in the element, as a function of the magnetizing current is detected by the sensing device, and the magnetizing current at that time represents a measurement of the stress/strain condition of the element.

Method for measuring stress/strain using Barkhausen noises

A friction welding tool for friction welding can be controlled with respect to measuring accuracy based upon the temperature in the weld zone. This is attained by determining the temperature values of the weld zone by way of a temperature sensor, which is arranged with its measuring point in the pin of the stir welding tool.

Friction stir tool for friction welding

A radome having for a RWR in a motor vehicle, upon which layers of snow or ice are prevented from forming. Thin metals layers of the radome exhibit an ohmic resistance, an electric current source for heating the radome injects an electric current into the metal layers which flows laterally through the metal layers . The radome is suitable for use in a motor vehicle for visually adapting the radome to its surrounding motor vehicle surface.

Radome for a range warning radar

A radome for a range warning radar system has metallic structures, such as a manufacturer's symbol or a characteristic structure, formed therein. Surfaces of the characteristic structure are coated with a metallic or metallically glossy layer which is transparent to electromagnetic radiation of the radar system and reflects visible light.

Process for manufacturing a radome for a range warning radar

A stiff elongated hollow structural member has a double-walled structure in the shape of a tube made of an interior tube which has an annular cross-section and an exterior tube which has a different cross-section, in a concentric arrangement. The interior and exterior tubes bound a hollow space filled with an incompressible liquid. Responsive to pressure increases in the liquid, the exterior tube in the elastic material range is bendingly deformable in the direction of a ring-circular cross-section or to a ring-circular cross-section. This hollow structural member can be used as an adjustable stiffness torsion member such as a vehicle steering shaft. Another disclosed adjustable stiffness hollow structural member includes a flat plate facing a corrugated plate to form a hollow space for the incompressible liquid. Increases in pressure of the liquid forces the corrugated member to a more flattened configuration.

Hollow structural member

Growing community of inventors

Putzbrunn, Germany

Werner Zimmermann