Fatigue condition monitoring of notched thermoplastic-based hybrid fiber metal laminates using electrical resistance measurement and digital image correlation

Mrzljak, Selim; Trautmann, Maik; Blickling, Philipp; Wagner, Guntram; Walther, Frank

Fatigue condition monitoring of notched thermoplastic-based hybrid fiber metal laminates using electrical resistance measurement and digital image correlation

dc.contributor.author	Mrzljak, Selim
dc.contributor.author	Trautmann, Maik
dc.contributor.author	Blickling, Philipp
dc.contributor.author	Wagner, Guntram
dc.contributor.author	Walther, Frank
dc.date.accessioned	2024-06-28T08:17:39Z
dc.date.available	2024-06-28T08:17:39Z
dc.date.issued	2023-05-17
dc.description.abstract	In this work, the monitorability of fatigue damage in notched thermoplastic-based hybrid fiber metal laminate, containing AA6082-T4 sheets and glass and carbon fiber-reinforced polyamide 6, is investigated using constant amplitude tests. Electrical resistance measurement and digital image correlation were combined to determine the initiation and evolution process of fatigue damage. Preliminary to the application of the electrical resistance measurement during fatigue load, basic investigations regarding necessary measurement accuracy and conditions, e.g. temperature and cross-section influence, were conducted to achieve reliable measurement results. Via digital image correlation fatigue crack growth was determined and correlated with the change in electrical resistance for two metal/fiber-reinforced polymer layer configurations (2/1 and 3/2) and notch geometries (drilling hole and double-edge notch). The results show that reliable detection of fatigue-related damage states is possible independent of aluminum sheet treatment (mechanically blasted or anodized surface), with earlier crack initiation and faster propagation for higher metal volume fraction (layer configuration 2/1). For the two investigated notch geometries an overall similar crack behavior was found. The electrical resistance values directly correlate to varieties of crack formation and growth, representing the aluminum sheet damage progress of the laminate well, and enabling the possibility of e.g. a limit value-based failure criterion. However, geometry and crack-related changes in electric current flow and thus current density must be taken into account for targeted monitoring of the laminate condition, as they cause significant changes in electrical resistance.	de
dc.identifier.uri	http://hdl.handle.net/2003/42561
dc.identifier.uri	http://dx.doi.org/10.17877/DE290R-24397
dc.language.iso	en	de
dc.relation.ispartofseries	Journal of composite materials;57(17)
dc.rights.uri	https://creativecommons.org/licenses/by-nc/4.0/	de
dc.subject	Fiber metal laminate	de
dc.subject	thermoplastic	de
dc.subject	AA6082	de
dc.subject	notch	de
dc.subject	instrumented fatigue testing	de
dc.subject	electrical resistance	de
dc.subject	potential drop	de
dc.subject	digital image correlation	de
dc.subject	fatigue	de
dc.subject	damage evolution	de
dc.subject.ddc	660
dc.subject.rswk	Faserverbundwerkstoff	de
dc.subject.rswk	Kunststoff-Metall-Verbund	de
dc.subject.rswk	Laminat	de
dc.subject.rswk	Thermoplast	de
dc.subject.rswk	Aluminiumlegierung	de
dc.subject.rswk	Kerbe	de
dc.subject.rswk	Werkstoffprüfung	de
dc.subject.rswk	Materialermüdung	de
dc.subject.rswk	Widerstand <Elektrotechnik>	de
dc.subject.rswk	Bildkorrelation	de
dc.subject.rswk	Werkstoffschädigung	de
dc.title	Fatigue condition monitoring of notched thermoplastic-based hybrid fiber metal laminates using electrical resistance measurement and digital image correlation	de
dc.type	Text	de
dc.type.publicationtype	ResearchArticle	de
dcterms.accessRights	open access
eldorado.secondarypublication	true	de
eldorado.secondarypublication.primarycitation	Mrzljak S, Trautmann M, Blickling P, Wagner G, Walther F. Fatigue condition monitoring of notched thermoplastic-based hybrid fiber metal laminates using electrical resistance measurement and digital image correlation. Journal of Composite Materials. 2023;57(17):2669-2687. doi:10.1177/00219983231176257	de
eldorado.secondarypublication.primaryidentifier	https://doi.org/10.1177/00219983231176257	de

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