Process for the determining the vibration characteristics of a body

US5841030A · kind A · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Wolfram Honsberg · Dorfen, DE
• Raymond Freymann · Birkenfeld, DE
• Franz Winter · Mainz, DE
• Hans Steinbichler · Neubeuern, DE

Key dates

• Filing date: Apr 14, 1997
• Grant date: Nov 24, 1998
• Expiry date: Apr 14, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G01H9/002
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process is disclosed for determining the vibration characteristics of a body by modal analysis. The body is made to vibrate at different frequencies and optical interference images of the body are recorded for the different frequencies. The interference images are analyzed on the basis of a mathematical/physical model, in view of the vibration characteristics at predetermined points, and the thus obtained information about the vibration characteristics of said points is subjected to a modal analysis.