Acoustic Emission Technique for Online Detection of Fusion Defects for Single Tracks During Metal Laser Powder Bed Fusion

dc.creatorKouprianoff, D.
dc.creatorLuwes, N.
dc.creatorYadroitsava, I.
dc.creatorYadroitsev, I.
dc.date.accessioned2021-11-15T21:53:40Z
dc.date.available2021-11-15T21:53:40Z
dc.date.issued2018
dc.description.abstractOne of the main drawbacks of laser based powder bed fusion, is lack of fusion between tracks due to non-optimal input process parameters, scanning and building strategies and/or inhomogeneity in the delivered powder layer. Unstable geometrical characteristics of single tracks and high roughness of the powder layer can cause porosity in 3 dimensional printed parts. In this study a non-destructive online monitoring technique, using acoustic emission was utilized to determine lack of fusion and balling effect of single tracks. This phenomenon was simulated by using an increased powder layer thickness. Short Time Fourier Transform was used as a tool for analysis of the acoustic behaviour of the system and it was compared with the acoustic emission (AE) recorded during processing of single tracks.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90283
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17204
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2018 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectonline monitoringen_US
dc.subjectonline detectionen_US
dc.subjectacoustic emissionen_US
dc.subjectfusion defecten_US
dc.subjectballing effecten_US
dc.subjectsingle tracksen_US
dc.subjectmetal laser powder bed fusionen_US
dc.titleAcoustic Emission Technique for Online Detection of Fusion Defects for Single Tracks During Metal Laser Powder Bed Fusionen_US
dc.typeConference paperen_US

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