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Ball-on-ring test validation for equibiaxial flexural strength testing of engineered ceramics

Journal Article · · International Journal of Ceramic Engineering & Science
DOI:https://doi.org/10.1002/ces2.10085· OSTI ID:1813239

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1813239
Journal Information:
International Journal of Ceramic Engineering & Science, Journal Name: International Journal of Ceramic Engineering & Science Journal Issue: 3 Vol. 3; ISSN 2578-3270
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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  • Moshkelgosha, Ehsan; Mamivand, Mahmood
  • ASME 2019 International Mechanical Engineering Congress and Exposition, Volume 12: Advanced Materials: Design, Processing, Characterization, and Applications https://doi.org/10.1115/IMECE2019-11695
conference January 2020
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