Accession Number:

ADA080029

Title:

Microstructural Processes in the Deformation and Fracture of Polymers

Descriptive Note:

Final rept. 1 Aug 1976-30 Sep 1979

Corporate Author:

ROCHESTER UNIV NY DEPT OF MECHANICAL AND AEROSPACE SCIENCES

Personal Author(s):

Report Date:

1979-12-17

Pagination or Media Count:

16.0

Abstract:

Shear bands in polystyrene were characterized with respect to their surface morphology, shear strain distribution, strain recovery by annealing, intersection behavior, splitting and joining processes, and yield criteria. Three kinds of shear bands are differentiated, fine bands, coarse bands, and thick bands. The first two kinds have different yield criteria, propagation modes, and surface appearances. The latter two kinds have many similarities. It seems that molecular alignment of directional defects must present in shear bands.

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE