The United Kingdom Contribution to the AGARD 'Fatigue-Rated Fastener Systems' Programme

Abstract

This Report describes an investigation of the relative merits of a number of fastener systems. They are termed 'fatigue-rated' fastener systems since they aim to enhance the fatigue endurance of the surrounding structure. Fatigue tests were performed on a number of laboratory specimens which simulated bolted connections in aircraft wing structures. It was shown that fastener systems incorporating hold cold expansion or fasteners installed with high interference fits were significantly superior to fasteners installed with a clearance fit in plain holes under the same test conditions. The longest fatigue endurances were observed in joints which contained fastener systems incorporating both cold expansion and a high degree of fastener interference. It was noted however, that cold expansion of fastener holes in asymmetric joints, with induced bending stresses, gave no increase in fatigue endurance over joints with fasteners installed in plain holes.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1989
Accession Number
ADA224338

Entities

People

  • R. Cook

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Bending Stress
  • Chemical Composition
  • Cold Working
  • Failure Mode And Effect Analysis
  • Fasteners
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Residual Stress
  • Sealing Compounds
  • Strain Gages
  • Stresses
  • Tensile Strength

Readers

  • Structural Health Monitoring of Composite Structures.