Stress Analysis Combining Speckle Metrology with Finite Element Modeling,

Abstract

Work was conducted to demonstrate the validity of the hybrid approach to the analysis of structural deformation. Mathematical modelling was incorporated into the process of reducing data from a digital correlation analysis of a speckled surface. The experimental data was collected both by directly imaging the surface onto a digitizing vidicon system and by transmitting the image through a coherent optical fiber bundle. Considerable savings of time and resources can be realized through the hybrid approach and the strengths of the theoretical and experimental procedures complement each other beautifully. The final results agreed within a few percent of each other and with values obtained by another independent method (high frequency moire), demonstrating the accuracy of the procedure. Keywords: Hybrid stress analysis; Digital image processing.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1985
Accession Number
ADA158349

Entities

People

  • D. R. Matthys
  • H. S. Johnson
  • J. A. Gilbert
  • M. A. Taher
  • T. D. Dudderar

Organizations

  • University of Wisconsin–Milwaukee

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Cameras
  • Correlation Analysis
  • Correlation Techniques
  • Digital Image Processing
  • Digital Images
  • Experimental Data
  • Fibers
  • Finite Element Analysis
  • Image Processing
  • Images
  • Mainframe Computers
  • Mathematical Analysis
  • Metrology
  • Models
  • Optical Fibers
  • Stress Analysis

Readers

  • Image Processing and Computer Vision.
  • Life Cycle Cost Analysis
  • Structural Health Monitoring of Composite Structures.