Empirical Fatigue Crack Growth Data for a Tension Loaded Threaded Fastener

Abstract

This project was undertaken to support the recently formed ASTM task group interested in fracture related problems in threaded fasteners. The purpose of the effort is to provide empirical data that could be used in the development and validation of a standard stress intensity solution for a tension loaded thread containing a surface crack emanating from the thread root. A simulated thread test article containing three circumferential grooves was used, rather than a continuous spiraling thread so that the crack plane would always remain perpendicular to the applied load. The profile of the grooves was identical to a 1-inch 12 UN thread. The simulated thread specimens were used in generating constant amplitude fatigue crack growth rate data for a tension loaded thread containing a surface crack. Keywords: Stress intensity, Fastener fracture mechanics, Crack growth.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADA194112

Entities

People

  • Russell R. Cervay

Organizations

  • University of Dayton

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Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Aeronautical Laboratories
  • Air Force
  • Air Force Facilities
  • Classification
  • Curvature
  • Engineering
  • Equations
  • Fatigue Tests (Mechanics)
  • Governments
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Mechanics
  • Security
  • Standards
  • Stress Intensity Factors

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  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.