Experimental failure analysis and mechanical performance evaluation of fiber-metal sandwich laminates interleaved with polyamide-6,6 interlayers through the combined usage of acoustic emission, thermography and microscopy techniques

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dc.contributor.authorBeylergil, Bertan
dc.contributor.authorTabrizi, İsa E.
dc.contributor.authorZanjani, Jamal S. M.
dc.contributor.authorSaeidiharzand, Shaghayegh
dc.contributor.authorPoudeh, Leila H.
dc.contributor.authorYıldız, Mehmet
dc.date.accessioned2021-02-19T21:16:40Z
dc.date.available2021-02-19T21:16:40Z
dc.date.issued2020
dc.departmentALKÜ
dc.descriptionBeylergil, Bertan/0000-0002-3204-6746; Yildiz, Mehmet/0000-0003-1626-5858
dc.description.abstractFiber-metal laminates are hybrid sandwich composite structures made of thin metallic sheets and layers of fiber-reinforced plastics. In this study, for the first time, the effects of polyamide 66 nonwoven interlayers on the tensile, three-point bending, interlaminar shear strength, and low velocity impact responses of fiber-metal laminates are investigated by coupling acoustic emission, thermography, and microscopy techniques. The fiber-metal laminates are interleaved with polyamide 66 nonwoven fabrics at two different areal weight density, namely, 17 gsm (grams per square meter) and 50 gsm. The tensile, bending, interlaminar shear strength, and low velocity impact tests are carried out in accordance with the ASTM standards. During the tensile and flexural tests, acoustic emission data are collected to understand damage types occurring under various loading conditions and, in turn, clearly shed light on the performance of polyamide 66 for interfacial strengthening in fiber-metal laminates. The results of acoustic emission investigation are correlated with the optical and scanning electron microscope-based microscopic analysis. It is shown that the interlaminar shear strength of fiber-metal laminates can be increased significantly (about 42%) by using polyamide 66 nonwoven interlayers. The impacted fiber-metal laminate specimens are examined to determine damage area and length using the lock-in thermography method. It is found that the polyamide 66 interlayers decrease the debonded length and damaged area up to 39 and 32%, respectively. The tensile and flexural strength and modulus of the fiber-metal laminate are not significantly affected by the presence of polyamide 66 interlayers, except a negligible drop in the value of tensile and flexural strength by 6 and 4%, respectively. The polyamide 66 interlayers are proved to be very successful in enhancing plastic deformation ability of the matrix and bonding efficiency between aluminum and composite sections.
dc.identifier.doi10.1177/1099636220924654
dc.identifier.issn1099-6362
dc.identifier.issn1530-7972
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1177/1099636220924654
dc.identifier.urihttps://hdl.handle.net/20.500.12868/516
dc.identifier.wosWOS:000534022000001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor0-belirlenecek
dc.language.isoen
dc.publisherSage Publications Ltd
dc.relation.ispartofJournal of Sandwich Structures & Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectComposite
dc.subjectfiber-metal laminates
dc.subjectinterleaving
dc.subjectPA 66 interlayers
dc.subjectmechanical properties
dc.subjectlow-velocity impact
dc.subjectdamage
dc.subjectacoustic emission
dc.subjectthermography
dc.subjectSEM
dc.titleExperimental failure analysis and mechanical performance evaluation of fiber-metal sandwich laminates interleaved with polyamide-6,6 interlayers through the combined usage of acoustic emission, thermography and microscopy techniques
dc.typeArticle

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