Accession Number:

ADA222027

Title:

Micromechanics of Interfaces in High Temperature Ceramics

Descriptive Note:

Annual rept. no. 1, FY89-FY90

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL CENTER FOR QUALITY ENGINEERING AND FAILURE PREVENTION

Report Date:

1990-02-28

Pagination or Media Count:

58.0

Abstract:

Results of the initial phase of a program to investigate the micromechanics of interfaces are summarized. Model experiments have been devised and implemented to follow crack propagation in a fiber reinforced transparent matrix by visual observations and electrical resistance of the fiber. In addition, pull-out test on the same composites have been carried out with several matrix-fiber interface modifications. Some success has been achieved in separating debonding and frictional components at the interface. We also report on the very early stage of experiments that have been initiated to study the in- situ debonding behavior during pull-out in a ceramic composite by utilizing a photo-elastic technique. Ceramic, Acrylic, Steel wire, Fracture, Debonding friction constant, Photoelastic, Mechanical behavior, Composite materials.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE