Structure Dynamic Theories of Fracture Diagnosis.

Abstract

Two modal theories of damage diagnosis are presented. The modal frequency theory, based on the changes in a modal frequencies of a structure due to damage, can identify both the location and the intensity of a crack for simple fracture configurations. The transmissibility theory, which uses the changes in transmissibilities across a structure, is proposed as a feasible method for large structures. The report reveals the uncertainties of the modal frequency theory. The transmissibility theory is illustrated with a frame structure in localizing a fracture damage.

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Document Details

Document Type
Technical Report
Publication Date
Mar 03, 1986
Accession Number
ADA172732

Entities

People

  • Frederick D. Ju

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Cantilever Beams
  • Computations
  • Damage Detection
  • Detection
  • Engineering
  • Intensity
  • Materials
  • Measurement
  • Modal Analysis
  • Modulus Of Elasticity
  • Nondestructive Testing
  • Resistance
  • Resonant Frequency
  • Stress Intensity Factors
  • Two Dimensional
  • Welded Joints

Fields of Study

  • Physics

Readers

  • Medical Imaging.
  • Structural Dynamics.
  • Structural Health Monitoring of Composite Structures.