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dc.contributor.authorBal, B.
dc.contributor.authorKaraveli, K. K.
dc.contributor.authorCetin, B.
dc.contributor.authorGumus, B.
dc.date.accessioned2021-03-11T12:59:07Z
dc.date.available2021-03-11T12:59:07Z
dc.date.issued2019en_US
dc.identifier.issn1528-8889
dc.identifier.issn0094-4289
dc.identifier.urihttps://doi.org/ 10.1115/1.4042870
dc.identifier.urihttps://hdl.handle.net/20.500.12573/585
dc.descriptionB. Bal gratefully acknowledges the financial support provided by Aselsan A.S.en_US
dc.description.abstractAl 7068-T651 alloy is one of the recently developed materials used mostly in the defense industry due to its high strength, toughness, and low weight compared to steels. The aim of this study is to identify the Johnson-Cook (J-C) material model parameters, the accurate Johnson-Cook (J-C) damage parameters, D-1, D-2, and D-3 of the Al 7068-T651 alloy for finite element analysis-based simulation techniques, together with other damage parameters, D-4 and D-5. In order to determine D-1, D-2, and D-3, tensile tests were conducted on notched and smooth specimens at medium strain rate, 10(0) s(-1), and tests were repeated seven times to ensure the consistency of the results both in the rolling direction and perpendicular to the rolling direction. To determine D-4 and D-5 further, tensile tests were conducted on specimens at high strain rate (10(2) s(-1)) and temperature (300 degrees C) by means of the Gleeble thermal-mechanical physical simulation system. The final areas of fractured specimens were calculated through optical microscopy. The effects of stress triaxiality factor, rolling direction, strain rate, and temperature on the mechanical properties of the Al 7068-T651 alloy were also investigated. Damage parameters were calculated via the Levenberg-Marquardt optimization method. From all the aforementioned experimental work, J-C material model parameters were determined. In this article, J-C damage model constants, based on maximum and minimum equivalent strain values, were also reported which can be utilized for the simulation of different applications.en_US
dc.description.sponsorshipAselsan A.S.en_US
dc.language.isoengen_US
dc.publisherASME, TWO PARK AVE, NEW YORK, NY 10016-5990 USAen_US
dc.relation.isversionof10.1115/1.4042870en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectmechanical testingen_US
dc.subjectrolling directionen_US
dc.subjectJohnson-Cook damage modelen_US
dc.subjectJohnson-Cook material modelen_US
dc.subjectaluminumen_US
dc.titleThe Precise Determination of the Johnson-Cook Material and Damage Model Parameters and Mechanical Properties of an Aluminum 7068-T651 Alloyen_US
dc.typearticleen_US
dc.contributor.departmentAGÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.contributor.authorID0000-0002-5990-8203en_US
dc.identifier.volumeVolume: 141en_US
dc.identifier.issue4en_US
dc.relation.journalJOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASMEen_US
dc.relation.publicationcategoryMakale - Uluslararası - Editör Denetimli Dergien_US


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