Characterisation of damage by means of electrical measurements: numerical predictions

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dc.contributor.authorGüzel, Dilek
dc.contributor.authorKaiser, Tobias
dc.contributor.authorLücker, Lukas
dc.contributor.authorBaak, Nikolas
dc.contributor.authorWalther, Frank
dc.contributor.authorMenzel, Andreas
dc.date.accessioned2024-11-25T13:06:37Z
dc.date.available2024-11-25T13:06:37Z
dc.date.issued2023-08-24
dc.description.abstractUnderstanding damage mechanisms and quantifying damage is important in order to optimise structures and to increase their reliability. To achieve this goal, experimental- and simulation-based techniques are to be combined. Different methods exist for the analysis of damage phenomena such as fracture mechanics, phase field models, cohesive zone formulations and continuum damage modelling. Assuming a typical [1 – d]-type damage formulation, the governing equations of continua that account for gradient-enhanced ductile damage under mechanical and electrical loads are derived. The mechanical and electrical sub-problems give rise to the local form of the balance equation of linear momentum, the micromorphic balance relation and the continuity equation for the electric charge, respectively. Experimental investigations indicate that changes in electrical conductivity arise due to the evolution of the underlying microstructure, for example, of cracks and dislocations. Therefore, motivated by deformation-induced property changes, the effective electrical conductivity is assumed to be a function of the damage variable. This eventually allows the prediction of experimentally recorded changes in the electrical resistance due to mechanically-induced damage processes. Interpreting the resistivity as a fingerprint of the material microstructure, the simulation approach proposed in the present work contributes to the development of non-destructive electrical-resistance-based characterisation methods. To demonstrate the applicability of the proposed framework, different representative simulations are studied.en
dc.identifier.urihttp://hdl.handle.net/2003/42951
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-24784
dc.language.isoen
dc.relation.ispartofseriesProceedings in applied mathematics and mechanics; 23(2)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectductile damageen
dc.subjectelectrical conductorsen
dc.subjectelectro-mechanical couplingen
dc.subjectfinite element modellingen
dc.subject.ddc620
dc.subject.ddc670
dc.subject.rswkDuktilitätde
dc.subject.rswkWerkstoffschädigungde
dc.subject.rswkElektrischer Leiterde
dc.subject.rswkElektromechanische Eigenschaftde
dc.subject.rswkFinite-Elemente-Methodede
dc.titleCharacterisation of damage by means of electrical measurements: numerical predictionsen
dc.typeText
dc.type.publicationtypeResearchArticle
dcterms.accessRightsopen access
eldorado.secondarypublicationtrue
eldorado.secondarypublication.primarycitationGüzel, D., Kaiser, T., Lücker, L., Baak, N., Walther, F., & Menzel, A. (2023). Characterisation of damage by means of electrical measurements: Numerical predictions. Proceedings in Applied Mathematics and Mechanics, 23, e202300013. https://doi.org/10.1002/pamm.202300013
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/pamm.202300013

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