TY - JOUR

T1 - The ball-on-three-balls strength test: In-situ testing through X-ray radiography and tomography

AU - Staudacher, Maximilian

AU - Pinzón, Gustavo

AU - Adrien, Jérôme

AU - Lachambre, Joël

AU - Maire, Eric

AU - Chevalier, Jérôme

AU - Lube, Tanja

N1 - Publisher Copyright: © 2023 The Authors

PY - 2024/3

Y1 - 2024/3

N2 - Over the past two decades, the Ball-on-Three-Balls-test (B3B) has been increasingly used due to its low systematic error and simple execution. A limiting factor for a more wide-spread use of the B3B-test is the lack of an accurate analytical solution. This demands the use of numerical methods, such as Finite-Element-Analysis (FEA). In a recent work, FEA has been used to assess the influence of non-linear effects on the measured strength. To validate the utilized FEA-model, the experimental measurement of the specimen's deflection can be drawn on. Due to the design of the fixture for the B3B-test, common deflection-measurement methods are not straightforward. Therefore, X-ray tomography is employed in this paper to track the displacement of the load and support balls for thin plates of a high-strength glass and Ce-doped zirconia presenting transformation-induced plasticity. Furthermore, the ball displacement is also determined from two-dimensional radiographs and shows good agreement with FEA results.

AB - Over the past two decades, the Ball-on-Three-Balls-test (B3B) has been increasingly used due to its low systematic error and simple execution. A limiting factor for a more wide-spread use of the B3B-test is the lack of an accurate analytical solution. This demands the use of numerical methods, such as Finite-Element-Analysis (FEA). In a recent work, FEA has been used to assess the influence of non-linear effects on the measured strength. To validate the utilized FEA-model, the experimental measurement of the specimen's deflection can be drawn on. Due to the design of the fixture for the B3B-test, common deflection-measurement methods are not straightforward. Therefore, X-ray tomography is employed in this paper to track the displacement of the load and support balls for thin plates of a high-strength glass and Ce-doped zirconia presenting transformation-induced plasticity. Furthermore, the ball displacement is also determined from two-dimensional radiographs and shows good agreement with FEA results.

UR - http://www.scopus.com/inward/record.url?scp=85178393502&partnerID=8YFLogxK

U2 - https://doi.org/10.1016/j.oceram.2023.100514

DO - https://doi.org/10.1016/j.oceram.2023.100514

M3 - Article

VL - 17

JO - Open ceramics

JF - Open ceramics

SN - 2666-5395

M1 - 100514

ER -