Dependence of fused filament fabrication weld strength on experimental parameters: A numerical study

Objects made with fused filament fabrication (FFF) are often subject to delamination and other failures due to weak bonds between the extruded layers. Thus understanding the degree of healing of each weld is of keen interest. An unsteady fin equation model (general enough to handle any layer cross s...

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Bibliographic Details
Published inJournal of manufacturing processes Vol. 85; pp. 1066 - 1076
Main Author Edwards, David A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 06.01.2023
Subjects
Differential algebraic equation
Fin equation
Fused filament fabrication
Healing parameter
Weld strength
Healing parameter
Fin equation
Fused filament fabrication
Differential algebraic equation
Weld strength
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Summary:Objects made with fused filament fabrication (FFF) are often subject to delamination and other failures due to weak bonds between the extruded layers. Thus understanding the degree of healing of each weld is of keen interest. An unsteady fin equation model (general enough to handle any layer cross section) is proposed to track the build temperature. After being validated against experimental data, the model is used to predict the healing parameter (and hence the weld strength) for a wide range of different experimental parameters in the case of two physically realistic layer cross sections.
ISSN:1526-6125
2212-4616
DOI:10.1016/j.jmapro.2022.11.069