Advanced Durability Analysis. Volume 3. Fractographic Test Data

Abstract

This report contains the test results and raw fractographic data for over 180 fatigue cracks. Natural fatigue cracks were acquired in fastener holes in 7475-T7351 aluminum. Three specimen fastener hole configurations were considered: (1) open hole, (2) bolt-in-hole(passive), and (3) bolt load transfer. Both straight-bore and countersunk fastener holes were considered. Strain survey results for a double-reversed dog-bone specimen(designed for 15% bolt load transfer) are presented. The fractographic data in this report can be used to quantify the initial fatigue quality or equivalent initial flaw SIZE(EIFS) cumulative distribution for clearance-fit fastener holes. These data can be used to determine the initial flaw size for the durability and damage tolerance analyses of mechanically fastened joints.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1986
Accession Number
ADA173635

Entities

People

  • D. E. Gordon
  • K. Koepsel
  • L. E. Brubaker
  • S. B. Kirschner
  • S. D. Manning

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Aeronautical Laboratories
  • Air Force
  • Aluminum
  • Classification
  • Clearances
  • Damage Tolerance
  • Data Sets
  • Dynamics
  • Fatigue Tests (Mechanics)
  • Fractography
  • Materials
  • Materials Science
  • Photographs
  • Security
  • Strain Gages
  • Test And Evaluation

Readers

  • Structural Health Monitoring of Composite Structures.