The Effect of Salt and Sea-Water Contamination on the Mechanical Properties of Cord and Webbing

Abstract

The effects of immersing a braided nylon cord, a flax webbing and a nylon webbing in salt solutions of various concentrations and in sea water have been investigated. Increases in mass per unit length were related to salt concentration and the calculated unoccupied space within the structures. No reduction in strength could be attributed to sodium chloride crystals. Reductions in the strength of nylon webbing occurred after immersion in sea water, consistent with the increased local relative humidity due to the deliquescing substances present in sea water. Washing did not remove all the contaminant from webbing. The additional loss in strength due to immersion in sea water could be of concern in parachutes near the end of their Service life.

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Document Details

Document Type
Technical Report
Publication Date
Apr 25, 1978
Accession Number
ADA060903

Entities

People

  • J. E. Swallow
  • R. B. Gilmore

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Analysis Of Variance
  • Aqueous Solutions
  • Chlorides
  • Coefficients
  • Contamination
  • Experimental Design
  • Foreign Languages
  • Humidity
  • Materials
  • Mechanical Properties
  • Physical Properties
  • Sea Water
  • Sodium Compounds
  • Specifications
  • Standards
  • Volume
  • Water

Readers

  • Environmental Engineering
  • Reinforced Composite Materials

Technology Areas

  • Space