Accession Number:

ADA285056

Title:

Fracture Analysis of an All-Ceramic Bearing System

Descriptive Note:

Final rept.

Corporate Author:

ARMY RESEARCH LAB WATERTOWN MA MATERIALS DIRECTORATE

Personal Author(s):

Report Date:

1994-09-01

Pagination or Media Count:

38.0

Abstract:

The report summarizes the fracture mechanism of an all-ceramic duplex spin bearing which was tested to failure to establish a design load margin. This bearing is part of a gyro-optics assembly being developed for use in an infrared seeker. The analysis revealed that machining-induced microcracks grew in the inner raceways beneath a ball. These microcracks coalesced to form macrocracks which led to fracture of the inner race and the failure of the bearing system.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Machinery and Tools
  • Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE