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Electrical and mech...
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Kaiser, T.Technical University of Dortmund
(författare)
Electrical and mechanical behaviour of metal thin films with deformation-induced cracks predicted by computational homogenisation
- Artikel/kapitelEngelska2021
Förlag, utgivningsår, omfång ...
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2021-10-05
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Springer Science and Business Media LLC,2021
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20 s.
Nummerbeteckningar
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LIBRIS-ID:oai:lup.lub.lu.se:185a8ebe-81c7-4017-83fe-d591e49c0385
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https://lup.lub.lu.se/record/185a8ebe-81c7-4017-83fe-d591e49c0385URI
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https://doi.org/10.1007/s10704-021-00582-3DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
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Motivated by advances in flexible electronic technologies and by the endeavour to develop non-destructive testing methods, this article analyses the capability of computational multiscale formulations to predict the influence of microscale cracks on effective macroscopic electrical and mechanical material properties. To this end, thin metal films under mechanical load are experimentally analysed by using in-situ confocal laser scanning microscopy (CLSM) and in-situ four point probe resistance measurements. Image processing techniques are then used to generate representative volume elements from the laser intensity images. These discrete representations of the crack pattern at the microscale serve as the basis for the calculation of effective macroscopic electrical conductivity and mechanical stiffness tensors by means of computational homogenisation approaches. A comparison of simulation results with experimental electrical resistance measurements and a detailed study of fundamental numerical properties demonstrates the applicability of the proposed approach. In particular, the (numerical) errors that are induced by the representative volume element size and by the finite element discretisation are studied, and the influence of the filter that is used in the generation process of the representative volume element is analysed.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Cordill, M. J.Austrian Academy of Sciences
(författare)
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Kirchlechner, C.Karlsruhe Institute of Technology
(författare)
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Menzel, A.Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH,Technical University of Dortmund(Swepub:lu)soli-anm
(författare)
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Technical University of DortmundAustrian Academy of Sciences
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:International Journal of Fracture: Springer Science and Business Media LLC231:2, s. 223-2420376-94291573-2673
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