Structural Health Monitoring Considering Internal Beam Damage

Abstract

The present study establishes a nondestructive method of damage detection and assessment in cantilever beams. The specimens used are twelve-inch aluminum 2024-T3 beams with machined notches of varying lengths and locations. Laser Doppler vibrometry is used to obtain the frequency response of vibrating beams. Experimental methods are developed to detect the presence, location and extent of damage by direct observation of the eigenvector in the third through eighth modes. Models in MATLAB and ABAQUS are used to predict and validate the observed data. With this experimental method developed, the validity of the method is tested for specimens that have been exposed to a destructive corrosive environment. A corrosion experiment is developed and used to determine the validity of the damage detection method for corroded structures.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2006
Accession Number
ADA449311

Entities

People

  • Jessica B. Chronister

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Acquisition
  • Air Force
  • Cameras
  • Cantilever Beams
  • Climate Change
  • Corrosion
  • Damage Detection
  • Data Acquisition
  • Detection
  • Detectors
  • Doppler Effect
  • Frequency Response
  • Measurement
  • Mechanics
  • Resonant Frequency
  • Structural Health Monitoring
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.

Technology Areas

  • Directed Energy