Time-Domain Analysis of Acoustic Emission Signals during the First Layer Manufacturing in FFF Process †

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dc.contributor.authorLopes, Thiago Glissoi [UNESP]
dc.contributor.authorAguiar, Paulo Roberto [UNESP]
dc.contributor.authorFrança, Thiago Valle [UNESP]
dc.contributor.authorConceição Júnior, Pedro de Oliveira
dc.contributor.authorSoares Junior, Cristiano [UNESP]
dc.contributor.authorAntonio, Zaqueu Ricardo Fernando [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-07-29T13:35:10Z
dc.date.available2023-07-29T13:35:10Z
dc.date.issued2022-01-01
dc.description.abstractAdditive manufacturing (AM) has been playing a crucial role in the fourth industrial revolution. Sensor-based monitoring technologies are essential for detecting defects and providing feedback for process control. Acoustic emission (AE) sensors have been used for a long time in a wide range of processes and fields, but they are still a challenge in AM processes. This work presents a study on the AE signals in the time-domain—raw and root mean square (RMS) values—regarding their behavior during the manufacture of a single-layer part in the fused filament fabrication process for two infill patterns. The tests were conducted on a cartesian 3D printer using polylactic acid material. The AE sensor was attached to the printer table through a magnetic coupling, and the signal was collected by an oscilloscope at 1 MHz sampling frequency. It was found that the raw AE signals behaved quite differently not just for the two infill patterns, but within the same pattern. The raw and RMS AE signals contained many spikes along the whole process, but the higher ones were those generally occurring at the end and/or start of a fabrication line. The RMS values, however, were useful for finding the start and end times of each fabricated line for both patterns. The mean RMS values showed nearly constant but distinct averages for the extruder-only, table-only and extruder–table movements.en
dc.description.affiliationDepartment of Electrical Engineering Bauru School of Engineering São Paulo State University UNESP, SP
dc.description.affiliationDepartment of Mechanical Engineering Bauru School of Engineering São Paulo State University UNESP, SP
dc.description.affiliationDepartment of Electrical and Computer Engineering São Carlos School of Engineering University of São Paulo USP, Av. Trab. São Carlense, 400-Pq. Arnold Schimidt, SP
dc.description.affiliationUnespDepartment of Electrical Engineering Bauru School of Engineering São Paulo State University UNESP, SP
dc.description.affiliationUnespDepartment of Mechanical Engineering Bauru School of Engineering São Paulo State University UNESP, SP
dc.identifierhttp://dx.doi.org/10.3390/ecsa-9-13285
dc.identifier.citationEngineering Proceedings, v. 27, n. 1, 2022.
dc.identifier.doi10.3390/ecsa-9-13285
dc.identifier.issn2673-4591
dc.identifier.scopus2-s2.0-85145417454
dc.identifier.urihttp://hdl.handle.net/11449/248127
dc.language.isoeng
dc.relation.ispartofEngineering Proceedings
dc.sourceScopus
dc.subjectacoustic emission
dc.subjectfused filament fabrication
dc.subjectinfill pattern
dc.subjectmonitoring
dc.titleTime-Domain Analysis of Acoustic Emission Signals during the First Layer Manufacturing in FFF Process †en
dc.typeArtigo
unesp.author.orcid0000-0002-8860-2748[1]
unesp.author.orcid0000-0003-4040-5056[3]

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Artigos - Engenharia Elétrica - FEB
Artigos - Engenharia Mecânica - FEB