Accession Number:

ADB077088

Title:

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

Descriptive Note:

Technical memo.,

Corporate Author:

WEAPONS SYSTEMS RESEARCH LAB ADELAIDE (AUSTRALIA)

Personal Author(s):

Report Date:

1981-02-01

Pagination or Media Count:

33.0

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.

Subject Categories:

  • Ammunition and Explosives
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE