Publication: Influence of the Fill Value Parameters on Acoustic and Physical–Mechanical Performance of 3D-Printed Panels
| dc.contributor.author | Pop, Mihai Alin | |
| dc.contributor.author | Coșniță, Mihaela | |
| dc.contributor.author | Zaharia, Sebastian-Marian | |
| dc.contributor.author | Chicoș, Lucia Antoaneta | |
| dc.contributor.author | Croitoru, Cătălin | |
| dc.contributor.author | Roată, Ionuț Claudiu | |
| dc.contributor.author | Catana, Dorin | |
| dc.date.accessioned | 2025-09-17T10:05:22Z | |
| dc.date.issued | 2025-06-28 | |
| dc.description.abstract | Thisstudyinvestigatestheacousticandmechanicalperformanceofthreetypesof3D-printedpolylacticacid(PLA)panelswithvaryinginȀlldensities(5–100%)andstructuralconȀgurations.UsingfusedȀlamentfabrication(FFF),panelsweredesignedasfollows:Type1(coreinȀllonly),Type2(coreinȀll+1.6mmshell),andType3(coreinȀll+multi-layershells).AcoustictestingviaimpedancetuberevealedthatType2panelswitha65%inȀlldensityachievedthehighestsoundabsorptioncoefȀcient(α=0.99),whileType1panelsexhibitedsuperiorsoundtransmissionloss(TLn=53.3dBat60%inȀll).Mechanicaltestingdemonstratedthatshelllayersimprovedtensileandbendingresistanceby25.7%and36.9%,respectively,butreducedcompressivestrengthby23.6%.MicroscopicanalysishighlightedductilefailureinType2andbrittlefractureinType3.TheoptimalpanelthicknessforacousticperformancewasidentiȀedas4mm,balancingmaterialefȀciencyandsoundabsorption.TheseȀndingsunderscorethepotentialoftailoredinȀllparametersinsustainablenoise-controlapplications. | |
| dc.description.sponsorship | This work was supported by a grant from the Ministry of Research, Innovation and Digitization, CNCS–UEFISCDI, project number PN-III-P1-1.1-TE-2021-0294, within PNCDI III. We also acknowledge the structural funds project PRO-DD (POS-CCE O.2.2.1, ID 123, SMIS 2637, ctr. No 11/2009) for partially providing the infrastructure used in this work at the CDI Institute of Transilvania University of Brasov. | |
| dc.identifier.doi | 10.3390/polym17131806 | |
| dc.identifier.issn | 2073-4360 | |
| dc.identifier.uri | https://repository.unitbv.ro/handle/123456789/1408 | |
| dc.publisher | MDPI AG | |
| dc.relation.ispartof | Polymers | |
| dc.subject | 3D printing | |
| dc.subject | density | |
| dc.subject | polylactic acid(PLA) | |
| dc.subject | sound absorption | |
| dc.subject | mechanical properties | |
| dc.subject | acoustic insulation | |
| dc.title | Influence of the Fill Value Parameters on Acoustic and Physical–Mechanical Performance of 3D-Printed Panels | |
| dc.type | Article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 13 | |
| oaire.citation.volume | 17 |