Fracture and Fatigue Crack Growth Behavior of Advanced Ceramic Matrix Composites

Abstract

Ultrasonic C-scans have successfully been used to investigate damage from notches and holes in Nexte1610 /Aluminosilicate (N610/AS) during tensile and fatigue loading conditions. Sectioned fatigue specimens verified that the region of distributed matrix damage and longitudinal fiber breakage correlated well with the C-scan damage zone at 23C. At 950C the C-scan data showed that the damage zone was confined to the notch plane where damage was primarily due to self similar crack growth. Sectioned samples verified that longitudinal fiber breaks were predominant in the vicinity of the matrix crack. The results from these tests are being employed to develop damage and failure criteria for N610/AS and other woven CMC.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1999
Accession Number
ADA361714

Entities

People

  • Dennis J. Buchanan

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Advanced Materials
  • Attenuation
  • Ceramic Matrix Composites
  • Classification
  • Composite Materials
  • Engineered Materials
  • Engineering
  • Materials
  • Materials Engineering
  • Materials Science
  • Monitoring
  • Security
  • Structural Integrity
  • Universities

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.