Finite element optimization of sample geometry for measuring the torsional shear strength of glass/metal joints

Hasanabadi, M. Fakouri; Malzbender, Jürgen; Groß-Barsnick, Sonja M.; Abdoli, Hamid; Kokabi, A.H.; Faghihi-Sani, M.A.

doi:10.1016/j.ceramint.2019.10.221

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Nowadays, finite element simulation is an efficient tool to study the effect of various parameters of the test procedures and thus eliminate systematic errors from testing results. [20][21][22] The bending test is a widely used method to study the mechanical properties of ceramics. Relationships used in the calculation of flexural fracture stress for rigid and integrated materials are based on the elastic deformation of the material.…”

Section: Methods Of Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Advanced analysis of flexural test results of sealant for solid oxide cells

Hasanabadi

Kokabi

Faghihi-Sani

et al. 2021

Int J Applied Ceramic Tech

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The conventional relations for calculating the fracture stresses consider only elastic deformation but ignore viscoelastic and viscoplastic behaviors. Measuring the joining strength of a composite glass sealant‐metallic interconnect specimen at solid oxide cell application relevant at high temperatures is a case where such effects can become significant. In the current study, three‐point and four‐point bending test results were analyzed using the finite element method (FEM) to assess systematic and random errors. It is shown that plastic deformation of the steel interconnect material at high temperature, although having a large effect on the stress distribution in the steel/glass–ceramic/steel specimen, does not cause a significant difference in the FEM‐derived true and the standard equation‐based analytically derived flexural stress values. It is also observed that even if the viscous flow of the glass–ceramic is considered in the simulations, the samples’ behavior in a realistic testing condition is not biased significantly by inelastic behavior due to the short testing time.

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Section: Methods Of Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced analysis of flexural test results of sealant for solid oxide cells

Hasanabadi

Kokabi

Faghihi-Sani

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…For the type of tests carried out in the current work, hourglass-shaped specimens were used as previously considered in Ref. [31], in particular, the successfully developed hollow-full specimen configuration with annulus shape sealant [15,30,56]. Crofer22H steel was used in the manufacture of the specimens.…”

Section: Specimen Preparationmentioning

confidence: 99%

“…As a result, glass-ceramic sealant materials are the focus of much research, with a particular emphasis on their thermomechanical optimization and improvement [10e12]. In the case of the development of novel glassceramic sealants and the improvement of existing ones, the Forschungszentrum Ju ¨lich in Germany, together with external partners has to date made important contributions in the area of fracture analysis [13], modeling by means of finite analysis [14], as well as the improvement of the thermomechanical properties of sealants by reinforcing them with other materials [15] or altering their preparation [16].…”

Section: Introductionmentioning

confidence: 99%