A Method for Determining Dynamic Stress Intensity Factors from Cod Measurement at the Notch Mouth in Dynamic Tear Testing.

Abstract

A formula is derived for determining dynamic stress intensity factors directly from crack mouth opening displacements in dynamic tear test specimen. The results obtained by the present estimation method for stationary as well as propagating cracks agree excellently with those directly obtained through a highly accurate moving-singularity finite element method. The present method can also be applied for other types of specimen which have a relatively short edge crack without any loading on the crack surface. The present simple estimation method should be of great value in the experimental measurement of dynamic stress-intensity factors for propagating cracks in (opaque) structural steel dynamic tear test specimens. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA103077

Entities

People

  • S. N. Atluri
  • T. Nishioka

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Civil Engineering
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Displacement
  • Engineering
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Security
  • Stationary
  • Steel
  • Stress Intensity Factors
  • Stress Waves
  • Stresses

Readers

  • Approximation Theory.
  • Materials Science (Mechanical Engineering).