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Numerical study of fatigue crack initiation and propagation on optimally designed cruciform specimens

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dc.contributor.authorBaptista, R.
dc.contributor.authorCláudio, Ricardo
dc.contributor.authorReis, L.
dc.contributor.authorMadeira, JFA
dc.contributor.authorFreitas, M.
dc.date.accessioned2019-03-07T13:49:51Z
dc.date.available2019-03-07T13:49:51Z
dc.date.issued2016
dc.description.abstractA new generation of smaller and more efficient biaxial fatigue testing machines has arrived on the market. Using electrical motors these machines are not able to achieve the higher loads their hydraulic counterparts can, and therefore the cruciform specimen needs to be optimized Following the authors previous work, several different optimal specimens' configurations were produced, using the base material sheet thickness as the main design variable. Every design variable was optimized in order to produce the highest stress level on the specimen center, while the stress distribution is still uniform on a 1 mm radius of the specimen center. Also it was guaranteed that the stress level on the specimen arms was always considerably lower, in order to achieve failure at the specimen center. In this paper traditional criteria like Findley, Brown-Miller, Fatemi-Socie, Smith, Watson e Topper (SWT), Liu I and Chu were considered to determine crack initiation direction for several loads in this biaxial in-plane specimens. In order to understand the fatigue propagation behavior, the stress intensity factors for mode I and mode II was determined for different cracks introduced on the geometry. Several crack and loading parameters were studied, including the starting crack length and angle, and different loading paths. Several biaxial loads were applied to the model, including 30, 45, 60, 90 and 180 out-of-phase angles.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBAPTISTA, Ricardo; [et al] – Numerical study of fatigue crack initiation and propagation on optimally designed cruciform specimens. In XV Portuguese Conference on Fracture, PCF 2016 – Procedia Structural Integrity. Paço de Arcos, Portugal: Elsevier, 2016. ISSN 2452-3216. Vol. 1/Pp. 98-105pt_PT
dc.identifier.doi10.1016/j.prostr.2016.02.014pt_PT
dc.identifier.issn2452-3216
dc.identifier.urihttp://hdl.handle.net/10400.21/9667
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://ac.els-cdn.com/S2452321616000159/1-s2.0-S2452321616000159-main.pdf?_tid=130cf664-6413-4d5a-ad0a-2dad654cf5c8&acdnat=1551966496_1d8151919b6d826f218288de7cfd52edpt_PT
dc.subjectFracturept_PT
dc.subjectFatiguept_PT
dc.subjectIn-phasept_PT
dc.subjectOut-of-phasept_PT
dc.subjectBiaxialpt_PT
dc.subjectCruciformpt_PT
dc.titleNumerical study of fatigue crack initiation and propagation on optimally designed cruciform specimenspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceFeb 10-12, 2016 - Paço de Arcos, Portugalpt_PT
oaire.citation.endPage105pt_PT
oaire.citation.startPage98pt_PT
oaire.citation.titleProcedia Structural Integrity - XV Portuguese Conference on Fracture, PCF 2016pt_PT
oaire.citation.volume1pt_PT
person.familyNameMiguel Gomes Simões Baptista
person.familyNameCláudio
person.familyNameMadeira
person.givenNameRicardo
person.givenNameRicardo
person.givenNameJose Firmino Aguilar
person.identifierN-6383-2013
person.identifier.ciencia-id4B19-FC15-14D9
person.identifier.ciencia-id2115-272E-5EBE
person.identifier.ciencia-id6F1E-DCF0-D6EC
person.identifier.orcid0000-0002-5955-8418
person.identifier.orcid0000-0002-4773-1957
person.identifier.orcid0000-0001-9523-3808
person.identifier.ridI-5287-2015
person.identifier.ridN-6918-2016
person.identifier.scopus-author-id7005968277
person.identifier.scopus-author-id23134325700
person.identifier.scopus-author-id7003405549
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationd16b9294-0a46-4eed-970a-9ecf1273a1bd
relation.isAuthorOfPublicationddbb2d01-bd2b-47f9-912b-200b9bc2bf5d
relation.isAuthorOfPublicationd495619a-a6ab-4ff5-8e70-3a1351f934dc
relation.isAuthorOfPublication.latestForDiscoveryddbb2d01-bd2b-47f9-912b-200b9bc2bf5d

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