Accession Number:

ADA243600

Title:

The Effect of Physical Aging on the Creep Response of a Thermoplastic Composite

Descriptive Note:

Doctoral thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1991-06-26

Pagination or Media Count:

242.0

Abstract:

The effect of thermoreversible physical aging on the linear viscoelastic creep properties of a thermoplastic composite was investigated. Radel XIM7, an amorphous composite material considered for use in the next generation high speed transport aircraft, was studied. The operating environment for the aircraft material will be near 188 deg C 370 deg F with a service life in excess of 60,000 hours at temperature. Accurate predictions of the viscoelastic properties of the material are essential to insure that design strength and stiffness requirements are met for the entire service life. The effect of physical aging on the creep response was studied using momentary tensile creep tests conducted at increasing aging times following a rapid quench from above the glass transition temperature Tg to a sub-Tg aging temperature.

Subject Categories:

  • Research and Experimental Aircraft
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE