Static Misalignment Effects is a Self-Tracking Laser Vibrometry System for Rotating Bladed Disks

The application of laser Doppler vibrometry to high speed rotating structures has been hampered by technical limitations. Whereas full-field three-dimensional velocity measurements can be made on stationary structures, the capability on rotating structures is limited to low speed, one-dimensional, steady state operation. This work describes the implementation of a self-tracking laser vibrometry system which overcomes many of the limitations of current techniques for vibration measurements on rotating structures. A model of the self-tracker is developed and used to predict the effects of static misalignments on the position and velocity errors. These predictions are supported by experimental results and simplified models of the self-tracker. NOTE: (02/2011) An updated copy of this ETD was added after there were patron reports of problems with the file.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1998

Author dc:creator

• Lomenzo, Richard Allan Jr.

Chair dc:contributor.committeechair

• Wicks, Alfred L.

Committee members dc:contributor.committeemember

• Robertshaw, Harry H.
• Kirk, R. Gordon
• Barker, Andy
• Lopez-Dominguez, Jose Carlos

• bladed disks
• laser vibrometry
• vibration measurement
• turbomachinery

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

etd-10298-151423

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/29398