Accession Number:

AD0884994

Title:

A Quantitative Evaluation of Test Methods for Brittle Materials.

Descriptive Note:

Final rept. 1 Jul 69-1 Jul 70,

Corporate Author:

SOUTHERN RESEARCH INST BIRMINGHAM AL

Report Date:

1971-04-01

Pagination or Media Count:

87.0

Abstract:

The report covers follow-on effort of work to perform a quantitative evaluation of test methods for brittle materials. Testing of a higher fired A-11 blank revealed that density was increased and average strength was reduced. Surface voids, which were detected, and probably subsurface voids could account for a portion of the reduction in strength. Non-parametric statistical studies indicated a positive correlation between strength and fired density and negative correlations between strength and minimum fired thickness and between strength and cone angle. Characterization studies generated additional data for correlation and improved techniques for ceramographic preparation. Deep-lapping techniques were investigated to determine if they could be used to remove surface material as much as 5 mils without creating subsurface damage. The effects of refiring on the material surface structure were also investigated. Author

Subject Categories:

  • Ceramics, Refractories and Glass
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE