Accession Number:

ADA164033

Title:

Comparison of Notch Strength between Gr/PEEK (APC-1 and APC-2) and Gr/Epoxy Composite Materials at Elevated Temperature.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1985-12-01

Pagination or Media Count:

195.0

Abstract:

Thermoplastics have been developed to improve fracture toughness compared to the widely used thermosetting polymers such as epoxy systems. A semi-crystalline thermoplastic, poly-ether-ether-ketonePEEK, matrix has been developed with significant toughness improvement over thermosets. A review of literature resulted in very little information related to the Aromatic Polymer Composite-2 APC-2 which is formed from graphite fibers 60 volume and PEEK. The experimental study reported herein was conducted to investigate the high temperature strength tension and compression of APC-2 laminates with holes. The experimental data was then used to determine parameters necessary to predict failure stress trends for the average stress failure criterion, point stress failure criterion, and a three parameter model failure criterion. The comparison of experimental and predicted failure strengths are depicted graphically. The failure modes of APC-2 are also studied utilizing the scanning electron microscope.

Subject Categories:

  • Laminates and Composite Materials
  • Plastics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE