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Effect of gap defects on in-situ AFP-manufactured structures

Raps, Lukas and Schiel, Ines and Chadwick, Ashley (2022) Effect of gap defects on in-situ AFP-manufactured structures. 20th European Conference on Composite Materials, 26.-30. Jun. 2022, Lausanne, Schweiz.

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Abstract

The laser-assisted Automated Fibre Placement (AFP) process has great potential to reduce cycle times for large-scale primary aircraft structures by means of in-situ consolidation. Single- and double-curved structures, such as an aircraft fuselage, require advanced layup strategies and careful evaluation of resulting gap or overlap defects. The work presented in this paper examines the impact of gap defects on tensile and compression strength of AFPmanufactured laminates using in-situ consolidation. Two laminates with gap defects and one reference laminate without defects were manufactured. Computed Tomography scans and microsections were generated to determine resulting defects and porosity in the gap areas. Tensile and compression test samples were prepared and tested. Tensile test results remained at the same level for all configurations. Compression strength decreased for the specimens with gap defects.

Item URL in elib:https://elib.dlr.de/189460/
Document Type:Conference or Workshop Item (Speech)
Title:Effect of gap defects on in-situ AFP-manufactured structures
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Raps, LukasLukas.Raps (at) dlr.dehttps://orcid.org/0000-0002-4512-8855
Schiel, InesInes.Schiel (at) dlr.deUNSPECIFIED
Chadwick, AshleyAshley.Chadwick (at) dlr.dehttps://orcid.org/0000-0001-7693-5687
Date:28 June 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Automated Fibre Placement; Thermoplastic Composites; in-situ Consolidation; Gap Defects; Mechanical Properties
Event Title:20th European Conference on Composite Materials
Event Location:Lausanne, Schweiz
Event Type:international Conference
Event Dates:26.-30. Jun. 2022
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:28 Oct 2022 09:06
Last Modified:14 Dec 2022 12:16

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