Accession Number:

ADA254178

Title:

Sensor and Actuator Materials for High Performance Composites

Descriptive Note:

Final rept.,

Corporate Author:

CALIFORNIA UNIV SANTA BARBARA DEPT OF MATERIALS

Personal Author(s):

Report Date:

1991-01-01

Pagination or Media Count:

134.0

Abstract:

The residual stresses in sapphire fibers embedded in a number of ceramic and inter-metallic matrices are measured non-destructively and in-situ using the stress-induced frequency shift in fluorescence from chromium dopants in the fibers. The stresses as a function of depth into the fibers from the free surface are measured and from the depth profile we have determined the interfacial shear stresses between the fibers and the matrices. The stress distributions provide a validation of the shear lag mechanics models of Hutchinson and Jensen, as well as a test of finite element computations.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE