Accession Number:

ADA234200

Title:

Transverse Crack Growth and Fracture of a Thermoplastic-Matrix Fiber Composite at Room and Elevated Temperatures

Descriptive Note:

Technical rept.

Corporate Author:

NATIONAL CENTER FOR COMPOSITE MATERIALS RESEARCH URBANA IL

Personal Author(s):

Report Date:

1989-10-01

Pagination or Media Count:

35.0

Abstract:

A study of transverse crack growth and fracture behavior in a thermoplastic-matrix fiber composite at bath room and elevated temperatures is conducted. Owing to the significant ductility of constitutive properties of the thermoplastic composite, a nonlinear fracture mechanics approach is taken in the study. Experiments are conducted on the AS4-fiberpolyamide-matrix composite, using a notched compact tension specimen. The influence of temperature, ranging from room temperature up to glass transition temperature, on transverse crack initiation and growth toughnesses and the final fracture has been studied. It is found that the initiation toughness of transverse crack growth is very sensitive to the temperature change. Contrary to the behavior in the neat thermoplastic J1 resin, an increase in temperature increases the transverse crack initiation toughness.

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE