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In-situ automated fiber placement gap defects filled by fused granular fabrication

Raps, Lukas and Atzler, Fynn and Chadwick, Ashley and Voggenreiter, Heinz (2024) In-situ automated fiber placement gap defects filled by fused granular fabrication. Manufacturing Letters (40), pp. 125-128. Elsevier. doi: 10.1016/j.mfglet.2024.03.007. ISSN 2213-8463.

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Official URL: https://www.sciencedirect.com/science/article/pii/S221384632400021X?via%3Dihub


This paper presents an investigation into the effect of Fused Granular Fabrication gap filling on the composition and mechanical performance of in-situ consolidation Automated Fiber Placement-manufactured laminates. Two laminates with staggered triangular gap defects were manufactured using in-situ consolidation Automated Fiber Placement. In the first laminate, the defects remained unmodified whereas in the second laminate Fused Granular Fabrication was used to fill the gap defects to mitigate out-of-plane waviness in subsequent plies and large pores which can initiate cracks. The process was successfully demonstrated. Fused Granular Fabrication layer thickness was however hard to adjust to match consolidated ply thickness of the AFP process due to the slightly uneven surface of the AFP substrate resulting in out-of-plane undulations. Compressive strength remained at the same level for both, reference and gap specimens. Tensile strength decreased 11 % and 23 % for gap defects and filled gap defects, respectively. Further work is required to utilize the full potential of the process combination.

Item URL in elib:https://elib.dlr.de/203709/
Document Type:Article
Title:In-situ automated fiber placement gap defects filled by fused granular fabrication
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Raps, LukasUNSPECIFIEDhttps://orcid.org/0000-0002-4512-8855157988122
Atzler, FynnUNSPECIFIEDhttps://orcid.org/0009-0000-7234-3828157988124
Chadwick, AshleyUNSPECIFIEDhttps://orcid.org/0000-0001-7693-5687157988126
Voggenreiter, HeinzDLR Institute of Structures and DesignUNSPECIFIEDUNSPECIFIED
Date:July 2024
Journal or Publication Title:Manufacturing Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 125-128
Keywords:Automated Fiber Placement; in-situ Consolidation; Fused Granular Fabrication; Thermoplastic Composites; Mechanical testing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Design and Manufacture Technologies
Deposited By: Raps, Lukas
Deposited On:19 Apr 2024 13:45
Last Modified:24 Apr 2024 13:41

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