Ball-on-Ring Test Validation for Equibiaxial Flexural Strength Testing of Engineered Ceramics

Adrianna E. Lupercio, Ehsan Moshkelgosha, Riley C. Winters, Cayden Doyle, Mahmood Mamivand, Andrew T. Nelson, Brian J. Jaques

Research output: Contribution to journalArticlepeer-review

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Abstract

The validation of a ball-on-ring, equibiaxial flexural strength method to obtain the transverse rupture strength (TRS) of right cylindrical ceramic specimens was performed in this study. Validation of the test method was achieved using commercially available engineered high purity alumina disks and finite element (FE) model analysis. The validated fixture was then used to obtain the TRS and Weibull statistical analysis of MgO-partially stabilized zirconia (MSZ) and Y2O3-partially stabilized zirconia (YSZ) ceramic disks. TRS data for alumina, MSZ, and YSZ agreed with the TRS values reported in the literature. A statistically relevant number of samples (N > 30) for each material were tested to allow for a Weibull statistical analysis. Weibull parameters for these materials were within the expected values for engineered ceramics. The characteristic strength for alumina, MSZ, and YSZ were determined to be 289, 786, and 814 MPa, respectively. The Weibull modulus was determined between 10 and 25 for each material, which is typical of engineered ceramics. In addition, FE model results were in close agreement with experimental fracture values for the three ceramic materials tested in this study.

Original languageAmerican English
Pages (from-to)128-139
Number of pages12
JournalMaterials Science and Engineering Faculty Publications and Presentations
Volume3
Issue number3
DOIs
StatePublished - 1 May 2021

Keywords

  • alumina
  • zirconia: partially stabilized
  • Weibull statistics
  • finite element analysis
  • rupture

EGS Disciplines

  • Materials Science and Engineering

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