The Effect of Temperature and Strain Rate on the Impact Fracture Toughness of Plastic Q and the Relationship with Dynamic Mechanical Loss Transitions.

Abstract

The impact fracture toughness of Plastic Q has been determined by fracture mechanics over the temperature range from 20deg C to -70deg C. A major peak in fracture toughness at -10deg C has been found to correspond to a secondary loss transition in plasticized cellulose acetate. At -10deg C, the fracture toughness is directly proportional to the log of the maximum strain rate. There appears to be some evidence for a plane strain to plane stress transition with varying specimen thickness and temperature.

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADB077088

Entities

People

  • C. W. Fong

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acetates
  • Cellulose
  • Cellulose Acetates
  • Continuum Mechanics
  • Fracture (Mechanics)
  • Mechanics
  • Physics
  • Strain Rate
  • Thickness
  • Toughness
  • Transitions

Readers

  • Materials Science (Mechanical Engineering).
  • Mathematics or Statistics
  • Polymer Science and Engineering.