Preliminary Observations Regarding LDV Scans of Panels Excited by Broadband Actuators at the US Capitol

Abstract

Experiments were conducted on frescos and wall paintings at the U.S. Capitol Building in order to determine the effectiveness of an electro-magnetic shaker-based approach of evaluating the condition of the substructure. A scanning laser Doppler vibrometer (LDV) was used to measure the vibratory response of the work of art subjected to the shaker excitation. This report contains a representative sample of the data obtained on two panels as well as a short synopsis of several observations and conclusions made regarding this data. Processed velocity data, in conjunction with data derived from traditional methodologies, indicate that the shaker-based LDV approach is an effective method for the efficient mapping of areas of structural deficiencies in need of amelioration by a conservation engineer.

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Document Details

Document Type
Technical Report
Publication Date
Nov 07, 2003
Accession Number
ADA418869

Entities

People

  • A. J. Romano
  • Brian H. Houston
  • J. A. Bucaro
  • Justin N. Vignola

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Actuators
  • Algorithms
  • Broadband
  • Cross Correlation
  • Equations Of Motion
  • Frequency
  • Frequency Bands
  • Laser Doppler Vibrometers
  • Long Wavelengths
  • Measurement
  • Military Research
  • Modulus Of Elasticity
  • Observation
  • Scanning
  • Secondary Waves
  • United States
  • Wave Propagation

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.
  • Systems Analysis and Design

Technology Areas

  • Directed Energy