THE APPLICABILITY OF A FRACTURE MECHANICS-NONDESTRUCTIVE TESTING DESIGN CRITERION

Abstract

This report describes the work conducted on a program designed to investigate the potential applicability of a combined fracture mechanics- nondestructive inspection procedure as a design approach for aircraft structures. The program consisted of three phases, conducted simultaneously: (1) a literature survey to determine if sufficient fracture toughness information exists to determine a statistically valid value of K1c; (2) a test program to determine the minimum size of a crack that can be detected by each of four NDT methods: X-ray, magnetic-particle, penetrant, and ultransonics; and (3) a test program to determine if fracture mechanics, when combined with flaw size as determined by NDT, can accurately predict the failure load of selected structures.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1968
Accession Number
AD0832042

Entities

People

  • Gloria B. Marchese
  • Hugh S. Pearson
  • John S. Owens
  • Paul F. Packman

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Chemistry
  • Data Analysis
  • Geometry
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Working
  • Mechanics
  • Tensile Strength
  • Test And Evaluation
  • Test Equipment
  • Test Methods
  • X Ray Film

Readers

  • Aerospace Test and Evaluation
  • Structural Health Monitoring of Composite Structures.