HIGH-TEMPERATURE PRESSURE SENSOR ELEMENT, PARTICULARLY FOR MEASURING PRESSURES INSIDE POWER UNITS, METHOD OF PRODUCING IT AND COMPONENT FOR POWER UNITS

• Main Authors: MULLER GERHARD, FRICKE SOREN, ZIEMANN THOMAS, ZIEGENHAGEN STEFAN, FRIEDBERGER ALOIS, ROSE EBERHARD, SCHMID ULRICH, TELITSCHKIN DIMITRI
• Format: Patent
• Language: English
• Published: 31.12.2008
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TESTING

The invention relates to a high temperature pressure sensor element (10; 20), in particular for jet engines, comprising a substrate (11) with an inner region (12) configured therein, a defomable membrane (13) which separates the inner region (12) from the outer region and deforms during operation in the event of a change of pressure, and a strain gauge element (14a, 14b, 14c) disposed on the membrane (13) for measuring the deformation of said membrane (13). The substrate (11), the membrane (13) and the strain gauge element (14a, 14b, 14c) are all made of the same high temperature stable material, particularly an alloy, such as a nickel-based alloy. A component for a jet engine, such as for example a turbine blade for an aircraft or a rocket engine, comprises such an integrated high temperature pressure sensor element (10; 20). ® KIPO & WIPO 2009