Fatigue of Synthetic Fibers for Marine Rope Applications.

Abstract

S-N fatigue and creep-rupture data have been obtained for nylon 6,6 single fibers, interlaced yarns, and small ropes under a variety of loading conditions. The results show a similar degradation rate at each level of structure, with no apparent influence of interfiber effects. Cyclic lifetimes of single fibers of nylon 6,6 as well as polyester and aramid can be predicted from a creep rupture model. Consistent with this model, the time to failure is insensitive to frequency over a broad range. For each level of structure the strain at failure is the same whether tested in simple tension or under cyclic or creep loading. Failure modes were generally similar in creep rupture and cyclic fatigue tests; no effect of a slack load on each cycle was evident in the failure mode or specimen lifetime.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1984
Accession Number
ADA144350

Entities

People

  • F. J. Mcgarry
  • J. F. Mandell
  • M. C. Kenney

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Confidence Limits
  • Contracts
  • Department Of Defense
  • Elongation
  • Environment
  • Failure Mode And Effect Analysis
  • Fibers
  • Materials
  • Materials Science
  • Mechanics
  • Orientation (Direction)
  • Sea Water
  • Sensitivity
  • Structural Loads
  • Synthetic Fibers
  • Tensile Strength
  • Water

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials