Method for the ultrasonic measurement of a wall thickness in hollow valves

US10139222B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Peter Kroos · Rutesheim, DE
• Christoph Luven · Stuttgart, DE
• Holger Schnell · Leinfelden, DE
• Thomas Strelow · Leutenbach, DE
• Richard Wlassa · Stuttgart, DE

Key dates

• Filing date: Nov 20, 2014
• Grant date: Nov 27, 2018
• Expiry date: Apr 3, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/101
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for measuring a wall thickness in hollow valves may include determining a wall thickness in a region of a valve stem using at least one ultrasonic sensor, wherein the one ultrasonic sensor may be oriented with respect to a surface on the valve stem in such a manner that an emitted ultrasound may be introduced into the surface in a perpendicular manner. The method may additionally or alternatively include determining a wall thickness in a region of a chamfer using the at least one ultrasonic sensor, wherein the at least one ultrasonic sensor may be positioned at a location on the chamfer at which an inner tangent in a cavity runs parallel to an outer tangent on the chamfer, and wherein the ultrasonic sensor is oriented with respect to the tangents in such a manner that an emitted ultrasound is introduced into the surface in a perpendicular manner.