TY  - JOUR
AU  - Fakouri Hasanabadi, M.
AU  - Malzbender, J.
AU  - Groß-Barsnick, S. M.
AU  - Abdoli, H.
AU  - Kokabi, A. H.
AU  - Faghihi-Sani, M. A.
TI  - Finite element optimization of sample geometry for measuring the torsional shear strength of glass/metal joints
JO  - Ceramics international / Ci news
VL  - 46
IS  - 4
SN  - 0272-8842
CY  - Faenza
PB  - Ceramurgia73399
M1  - FZJ-2020-01934
SP  - 4857 - 4863
PY  - 2020
AB  - Assessment of mechanical properties of glass/metal joints is a challenging process, especially when the application relevant conditions of the joints have to be considered in the test design. In this study, a finite element method (FEM) is implemented to analyze a torsional shear strength test designed for glass-ceramic/steel joints aiming towards solid oxide fuel/electrolysis cells application. Deviations from axial symmetry of the square flanges (ends) of respective hourglass-shaped specimens and also supporting and loading sockets of the test set-up are included in the model to simulate conditions close to reality. Undesirable tensile stress and also shear stress concentration appear at the outer edge of glass-ceramic layers, which are less for the hollow-full specimen. The simulation results show that for a specimen with either 9 mm thick square- or 6 mm thick triangular-flanges, locally enhanced tensile stresses almost disappear, resulting in a symmetric shear stress distribution. The difference between the analytically derived nominal shear strength and the real critical shear stress derived via simulation reduces with decreasing the fracture torque.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000512219600098
DO  - DOI:10.1016/j.ceramint.2019.10.221
UR  - https://juser.fz-juelich.de/record/875303
ER  -