Effect of Test Frequency and Water Content on Localized Crack-Tip Heating in Nylon 66.

Abstract

Fatigue crack propagation (FCP) tests were conducted on nylon 66 specimens equilibrated over a range of moisture levels and test frequencies to determine the crack growth rates and the crack-tip temperatures as a function of water content. Frequency-sensitivity was correlated with the amount of crack-tip heating taking place, with crack-tip temperature being found to depend strongly on the estimated loss compliance, D', of the material. The frequency-sensitivity of FCP in nylon was seen also to be affected by mean stress, suggesting that creep processes are often significant in FCP of nylon. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA124156

Entities

People

  • John A. Manson
  • M. T. Hahn
  • P. E. Bretz
  • Reinhold W. Lang
  • Richard W. Hertzberg

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • California
  • Chemical Engineering
  • Chemistry
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Engineering
  • Fatigue Tests (Mechanics)
  • Frequency
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • New Jersey
  • Surface Temperature
  • United States

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials
  • Thermal Physics or Thermal Science.