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Investigation of Mechanical Properties of Fibre Metal Laminates based on a Thermoplastic Resin

Zehnder, Christoffer (2012) Investigation of Mechanical Properties of Fibre Metal Laminates based on a Thermoplastic Resin. Bachelor's, Rheinisch-Westälische Technische Hochschule Aachen.

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Fibre Metal Laminates (FML), consisting of alternatively stacked steel foils and glass bre reinforced PEEK layers, where investigated. The metal surface was treated with a cleaning laser and an appropriate set of parameters was chosen, the GFPEEK surface was degreased with acetone. The laminates were fabricated afterwards by means of a hot press and several specimens were cut out of the specimen plate via water jet cutting. Specimen dimensions and testing parameters for tensile, shear tensile, 4-point-bending and 3-point-bending tests were developed. The aim of this thesis was to investigate the application of several testing methods on FML on the one hand and the mechanical properties of a FML based on a thermoplastic resin on the other hand. The specimens though delaminated during water jet cutting, so that no mechanics of materials testing could be performed. Further analysis exhibited diverse reasons for this total failure: The process parameters have to be revised. Especially the dimensions of the laminate have to be adjusted to the dimensions of the tool and pressure and temperature have to be coordinated. It is furthermore important to improve the laser treatment so that a uniform structure can be achieved. Extensive sulphur contamination could be detected on the metal surface after delamination, which states the most grave reason for delamination. Possible modications of the pretreatment and production processes were presented.

Item URL in elib:https://elib.dlr.de/79379/
Document Type:Thesis (Bachelor's)
Title:Investigation of Mechanical Properties of Fibre Metal Laminates based on a Thermoplastic Resin
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:3 December 2012
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:68
Keywords:thermoplastic Fibre Metal Laminate, steel-PEEK interface, aging
Institution:Rheinisch-Westälische Technische Hochschule Aachen
Department:Institutf ür Metallkunde und Metallphysik
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Schulze, Karola
Deposited On:04 Dec 2012 10:19
Last Modified:04 Dec 2012 10:19

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