Fracture toughness testing of biomedical ceramic-based materials using beams, plates and discs

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Belli R, Wendler M, Petschelt A, Lube T, Lohbauer U
Zeitschrift: Journal of the European Ceramic Society
Jahr der Veröffentlichung: 2018
Band: 38
Heftnummer: 16
Seitenbereich: 5533-5544
ISSN: 0955-2219
eISSN: 1873-619X


Abstract

The testing of fracture toughness becomes problematic when only limited amount of material is available that hinders the production of typical beam specimens to be tested in bending. Here we explore fracture toughness testing methodologies that allow for small discs and plates having surface cracks to be tested in biaxial flexure using the Ball-on-3-balls (B3B) set-up, or sawed notches as in the Compact Tension geometry. The B3B-K-Ic test has shown to be versatile and account for a very small overestimation of the K-Ic-value in the order of 0.8-1.25% due to in-plane crack mispositioning, and a maximum of 4% if a worst-case scenario of additional out-of-plane mispositioning is assumed. The geometrical factor in the standard SCF method, derived by Newman and Raju, resulted in an overestimation of similar to 8% of the K-Ic-value compared to the new calculation by Strobl et al. for materials with Poisson's ratio < 0.3.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Belli, Renan Dr.
Zahnklinik 1 - Zahnerhaltung und Parodontologie
Lohbauer, Ulrich Prof. Dr.
Medizinische Fakultät
Petschelt, Anselm Prof. Dr.
Lehrstuhl für Zahn-,Mund- und Kieferheilkunde, insbesondere Zahnerhaltung, Parodontologie und Kinderzahnheilkunde


Einrichtungen weiterer Autorinnen und Autoren

Montanuniversität Leoben


Zitierweisen

APA:
Belli, R., Wendler, M., Petschelt, A., Lube, T., & Lohbauer, U. (2018). Fracture toughness testing of biomedical ceramic-based materials using beams, plates and discs. Journal of the European Ceramic Society, 38(16), 5533-5544. https://dx.doi.org/10.1016/j.jeurceramsoc.2018.08.012

MLA:
Belli, Renan, et al. "Fracture toughness testing of biomedical ceramic-based materials using beams, plates and discs." Journal of the European Ceramic Society 38.16 (2018): 5533-5544.

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Zuletzt aktualisiert 2019-06-08 um 09:06