THE RELATIONSHIP BETWEEN FORCE-EXTENSION DIAGRAM AND VISUAL INSPECTION ON THE EDGE CRACKING TENDENCY OF DUAL PHASE STEELS

Basit Öğe Kaydı
dc.authorid0000-0002-9378-3870en_US
dc.contributor.authorArdali, Refiye
dc.contributor.authorYildirim, Omer
dc.contributor.authorSahin, Kubilay
dc.contributor.authorSaray, Onur
dc.date.accessioned2021-03-20T20:13:26Z
dc.date.available2021-03-20T20:13:26Z
dc.date.issued2018
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description27th International Conference on Metallurgy and Materials (METAL) -- MAY 23-25, 2018 -- Brno, CZECH REPUBLICen_US
dc.description.abstractLight-weighting targets of the automotive sector requires to use of advanced high-strength steels (AHSS) with higher strength more extensively. However, as a common behavior, increasing strength levels of AHSS accompanied with decreasing ductility/formability levels. This behavior become more pronounced during secondary deformation of a blanked edge. To examine this concept, hole expanding (HE) test, that simulates the local formability of the edges after blanking operations, has been started to be widely used. In this study, deformation stages of the HE tests were examined by means of main characteristics and variations of F (force) - X (extension) curves and derivative of F with respect to the X (dF/dx) during the punch travel until cracking. In order to correlate variation in curve characteristics with deformation stages, high-resolution camera images of the tested samples concurrently collected during the whole test and main relationships between them were determined. Based on these relationships a new approach to predict "stop stroke" of the HE tests is proposed. Therefore, elimination of the visual inspection and decision making of an operator or an in-situ image processing software is aimed. Proposed approach was developed using DP600 steel with a thickness of 1.2 mm as a common steel grade that widely used in automotive industry. Also, validation of developed "stop stroke" criteria was tried in HE testing of thinner and thicker DP600 samples. Results showed that a good prediction of stop stroke can be achieved by using proposed approach.en_US
dc.description.sponsorshipTechn Univ Ostrava, Czech Soc New Mat & Technologies, Engn Acad Czech Republ, Czech Met Soc, Mat Res Soc Serbia, Soc Portuguesa Mat, Austrian Soc Met & Mat, Norsk Materialteknisk Selskap, Assoc Italiana Metallurgia, Soc Francaise Metallurgie Materiauxen_US
dc.description.sponsorshipScientific Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [3160912]en_US
dc.description.sponsorshipThis study was supported by Scientific Technological Research Council of Turkey (TUBITAK) under grant number 3160912.en_US
dc.identifier.endpage297en_US
dc.identifier.isbn978-80-87294-84-0
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage291en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12885/868
dc.identifier.wosWOS:000461832200042en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorSaray, Onur
dc.language.isoenen_US
dc.publisherTanger Ltden_US
dc.relation.ispartof27Th International Conference On Metallurgy And Materials (Metal 2018)en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHole expansionen_US
dc.subjectlocal formabilityen_US
dc.subjectdual phase steelsen_US
dc.subjectedge crackingen_US
dc.titleTHE RELATIONSHIP BETWEEN FORCE-EXTENSION DIAGRAM AND VISUAL INSPECTION ON THE EDGE CRACKING TENDENCY OF DUAL PHASE STEELSen_US
dc.typeConference Objecten_US

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