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Prediction of true compressive flow stress of aa 6063 alloy through ultrasonic attenuation

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dc.contributor.author Jurmey, K
dc.contributor.author Ghimire, NS
dc.contributor.author Sivahar, V
dc.contributor.author Abeygunawardana, AAGA
dc.contributor.author Piyathilake, SAKVM
dc.contributor.editor Abeygunawardane, AAGA
dc.date.accessioned 2022-03-14T03:30:43Z
dc.date.available 2022-03-14T03:30:43Z
dc.date.issued 2020-02
dc.identifier.citation Jurmey, K., Ghimire, N.S., Sivahar, V., Abeygunawardana, A.A.G.A., & Piyathilake, S.A.K.V.M. (2020). Prediction of true compressive flow stress of aa 6063 alloy through ultrasonic attenuation [Abstract]. In A.A.G.A. Abeygunawardane (Ed.), Towards smart society through innovative materials (p. 22). Department of Materials Science and Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/17316
dc.description.abstract During the compression testing of any material sample, the true compressive flow stress of the material cannot be determined due to the presence of friction between the end surfaces of the specimen and platens (of the compression testing machine) and due to misalignment of the test specimen and platens. Friction causes the barreling of test specimen and material flow at the interface is restrained. However, the material near the mid height position is less restrained by the friction and spreads laterally to a greatest extent. In addition to the compressive stress, a circumferential tensile stress develops as the specimen barrels. Compressive tests are therefore not valid for measurement of bulk elastic or plastic properties of material. The present research work is based on prediction of true compressive flow stress of AA 6063 alloy through ultrasonic attenuation. AA 6063 specimens were compressed to obtain compressive stress and strain. Ultrasonic attenuation coefficient of the each compressed specimens were measured to correlate the variation of stresses with it. Finite Element Analysis (FEA) was performed to validate the frictional and misalignment effects during compression testing and to obtain true compression flow stress. The destructive compression testing method will be eliminated by using nondestructive ultrasonic testing method which is cost effective and time saving. en_US
dc.language.iso en en_US
dc.publisher Department of Materials Science and Engineering en_US
dc.subject Attenuation coefficient en_US
dc.subject Compression flow stress en_US
dc.subject Friction en_US
dc.subject Misalignment en_US
dc.title Prediction of true compressive flow stress of aa 6063 alloy through ultrasonic attenuation en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Materials Science and Engineering en_US
dc.identifier.year 2020 en_US
dc.identifier.conference Materials Engineering Symposium on Innovations for Industry 2020 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos p. 22 en_US
dc.identifier.proceeding Towards smart society through innovative materials en_US
dc.identifier.email kuenzangjurmey95@gmail.com en_US
dc.identifier.email vsivahar@uom.lk
dc.identifier.email aravindag@uom.lk


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