Mechanical Behavior of Balloon Films.

Abstract

Activities of a program study of the problems faced in the design and flight of free balloons are summarized. Material testing systems were made operational over temperatures ranging from plus 100 to minus 100 degrees C. Most of the testers were equiped with inert atmosphere environmental chambers and with full instrumentation necessary to monitor loading rates, stresses, strains and temperatures. Materials were subjected to stress states which include uniaxial, one-to-one biaxial and two-to-one biaxial. The rate of loading and temperature dependence of polyethylene Stratofilm was measured both by creep tests and by uniaxial testing. All the data are presented along with an analytical solution to the problem of presenting in a simple manner both the rate and temperature influence by means of master curves. A polyethylene balloon stored for twenty-two years was uncrated, dissected and tested to determine if there were detrimental aging effects during storage. (Author, modified-PL).

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA098937

Entities

People

  • L. Dale Webb

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amorphous Materials
  • Climate Change
  • Composite Materials
  • Creep
  • Creep Tests
  • Dielectric Polymers
  • Differential Equations
  • Engineering
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanics
  • Plastic Explosives
  • Stress Strain Relations
  • Stresses
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Fault Tolerant Diagnosis of Black and White Balloon Isolation Tests Using ¥.
  • Mechanical Engineering/Mechanics of Materials.