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ID 118031
Author
Ooya, Satoshi Tokushima University
Shigenai, Yuka Tokushima University
Keywords
Operational modal estimation
Normalized eigenmodes
Mass change method
Content Type
Book
Description
Several studies have been attempted to grasp the modal characteristics in machine operation. Derivation of the scaling factor for normalized eigenmodes is one of the important issues in operational modal analysis. In this study, we propose a procedure with the mass of piezoelectric acceleration transducers. Then the vibration testing for the mass change method is performed without using additional masses. We obtain the modal characteristics from the acquired acceleration responses by the transducers that is less than all measurement points. That is, the measurement is performed multiple times by changing the measurement locations. A modified procedure is proposed to calculate the scaling factor for normalized eigenmodes and proper natural frequencies by removing the influence of the mass of the added piezoelectric accelerometer. The validity of the proposed method is verified by numerical calculations and experiments of a rectangular plate.
ISBN
9783030481520
9783030481537
Journal Title
Experiments, Materials and Signal Processing
NCID
BC08642983
Publisher
Springer Nature
Start Page
175
End Page
182
Published Date
2021-04-23
Remark
Vibration Engineering for a Sustainable Future Vol.2
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Science and Technology