ENCAPSULATING PROPELLANTS BY MEANS OF ULTRASONIC WELDING

Abstract

An Al container holding M5 propellant has caused functional problems because of inadequate sealing. The ultrasonic welding approach provided the most effective and durable seal. One hundred and thirty-three containers sealed by ultrasonic welding withstood 28 days temperature cycling without any detectable leakage. Thirty-five containers filled with M5 propellant were temperature-cycled and exposed to a solvent-saturated atmosphere for 11 days. Closed bomb tests of the propellant afterward indicated an effective seal was achieved. Meticulous attention to surface cleanliness is not requisite to achieve sound welds. Foil thin covers which present a minimum resistance to propagation of explosive effects can be welded. Propellant trapped in the weld zone did not ignite. Significant cost savings can be realized in high volume production over methods using special sealants.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1963
Accession Number
AD0427412

Entities

People

  • Charles Zglenicki
  • Louis Silberman

Organizations

  • Picatinny Arsenal

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Ammunition
  • Atmospheres
  • Calcium Compounds
  • Closed Bomb Tests
  • Contracts
  • Engineering
  • Explosives
  • Frequency
  • Government Procurement
  • New Jersey
  • Procurement
  • Production
  • Standards
  • Ultrasonic Welding
  • Welding
  • Welds

Readers

  • Materials Science
  • Rocket Propulsion.
  • Thermal Physics or Thermal Science.