TY - GEN
T1 - Comparison of shear strength of ceramic joints determined by various test methods with small specimens
AU - Shih, Chunghao
AU - Katoh, Yutai
AU - Kiggans, Jim O.
AU - Koyanagi, Takaaki
AU - Khalifa, Hesham E.
AU - Back, Christina A.
AU - Hinoki, Tatsuya
AU - Ferraris, Monica
N1 - Publisher Copyright:
Copyright © 2015 by The American Ceramic Society. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Four different shear test methods i.e. double-notched shear test, asymmetrical four point bend test, Iosipescu test, and torsion test, were investigated for their ability to evaluate one type of SiC-to-SiC brittle ceramic joint while using small-size specimens. The double-notched shear test showed higher stress concentration at the notch roots and a lower apparent shear strength. Both asymmetrical four point bend test and Iosipescu test utilized epoxy joined metal extensors, which failed during test and caused misalignment and tensile stress failures. The torsion test can deliver valid, single mode shear loading. However, failure in the SiC base material was observed for me torsion joint specimens in this study. None of the tests reliably induced true shear failure of the Ti3SiC2 MAX phase joint, because the joint is stronger and tougher than the SiC substrate. Torsion tests appear to be the most promising because of the pure shear loading, relatively low stress concentration, and easy alignment.
AB - Four different shear test methods i.e. double-notched shear test, asymmetrical four point bend test, Iosipescu test, and torsion test, were investigated for their ability to evaluate one type of SiC-to-SiC brittle ceramic joint while using small-size specimens. The double-notched shear test showed higher stress concentration at the notch roots and a lower apparent shear strength. Both asymmetrical four point bend test and Iosipescu test utilized epoxy joined metal extensors, which failed during test and caused misalignment and tensile stress failures. The torsion test can deliver valid, single mode shear loading. However, failure in the SiC base material was observed for me torsion joint specimens in this study. None of the tests reliably induced true shear failure of the Ti3SiC2 MAX phase joint, because the joint is stronger and tougher than the SiC substrate. Torsion tests appear to be the most promising because of the pure shear loading, relatively low stress concentration, and easy alignment.
UR - http://www.scopus.com/inward/record.url?scp=84922537596&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84922537596
SN - 9781119040439
T3 - Ceramic Engineering and Science Proceedings
SP - 139
EP - 149
BT - Ceramic Materials for Energy Applications IV
A2 - Matyas, Josef
A2 - Lin, Hua-Tay
A2 - Katoh, Yutai
PB - American Ceramic Society
T2 - Ceramic Materials for Energy Applications IV - 38th International Conference on Advanced Ceramics and Composites, ICACC 2014
Y2 - 26 January 2014 through 31 January 2014
ER -