Pull-off strength assessment of co-consolidated AS4/PEEK T-joints

Bert Rietman, Remko Akkerman

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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Abstract

Various joining methods are available for composite structures, with anticipated benefits for the most obvious way of exploiting the nature of thermoplastic materials: melting and reconsolidation. A proper joint selection and detailed design, however, will require quantitative results obtained in an objective and reproducible procedure. The objective of this paper was to develop benchmark procedures and results for the characterization of joining methods for composite materials. AS4 carbon/PEEK joints (UD tape) were manufactured in T-configurations by autoclave processing. Two types of T-joints were co-consolidated on the skin, from a flat strip with an injection molded nugget (“butt joint”) or from a pre-consolidated T-stiffener, respectively. RTD, CTD and HW experiments were performed on both types of configurations. The pre-consolidated T-stiffeners have a higher pull-off load and more gradual damage development than the flat strip/nugget configuration, at the cost of added mass. Also here CTD and RTD performances are similar, whereas the flat strip/nugget configuration shows no significant strength reduction in HW conditions, against 30% for the pre-consolidated T-stiffener configuration.
Original languageEnglish
Title of host publication8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013)
Subtitle of host publicationNovel Aspects in Composite Technologies: from Fibre to Lightweight Structures
EditorsP. Ermanni
PublisherCurran Associates
Pages163-170
ISBN (Print)978-1-62993-391-7
Publication statusPublished - 11 Sep 2013
Event8th SAMPE Europe Technical Conference & Table Top Exhibition, SETEC 2013 - Wuppertal, Germany
Duration: 11 Sep 201312 Sep 2013
Conference number: 8

Conference

Conference8th SAMPE Europe Technical Conference & Table Top Exhibition, SETEC 2013
Abbreviated titleSETEC
CountryGermany
CityWuppertal
Period11/09/1312/09/13

Fingerprint

Polyether ether ketones
Joining
Autoclaves
Composite structures
Tapes
Thermoplastics
Skin
Melting
Carbon
Composite materials
Processing
Experiments

Keywords

  • METIS-302944
  • IR-91054

Cite this

Rietman, B., & Akkerman, R. (2013). Pull-off strength assessment of co-consolidated AS4/PEEK T-joints. In P. Ermanni (Ed.), 8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013): Novel Aspects in Composite Technologies: from Fibre to Lightweight Structures (pp. 163-170). Curran Associates.
Rietman, Bert ; Akkerman, Remko. / Pull-off strength assessment of co-consolidated AS4/PEEK T-joints. 8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013): Novel Aspects in Composite Technologies: from Fibre to Lightweight Structures. editor / P. Ermanni. Curran Associates, 2013. pp. 163-170
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title = "Pull-off strength assessment of co-consolidated AS4/PEEK T-joints",
abstract = "Various joining methods are available for composite structures, with anticipated benefits for the most obvious way of exploiting the nature of thermoplastic materials: melting and reconsolidation. A proper joint selection and detailed design, however, will require quantitative results obtained in an objective and reproducible procedure. The objective of this paper was to develop benchmark procedures and results for the characterization of joining methods for composite materials. AS4 carbon/PEEK joints (UD tape) were manufactured in T-configurations by autoclave processing. Two types of T-joints were co-consolidated on the skin, from a flat strip with an injection molded nugget (“butt joint”) or from a pre-consolidated T-stiffener, respectively. RTD, CTD and HW experiments were performed on both types of configurations. The pre-consolidated T-stiffeners have a higher pull-off load and more gradual damage development than the flat strip/nugget configuration, at the cost of added mass. Also here CTD and RTD performances are similar, whereas the flat strip/nugget configuration shows no significant strength reduction in HW conditions, against 30{\%} for the pre-consolidated T-stiffener configuration.",
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Rietman, B & Akkerman, R 2013, Pull-off strength assessment of co-consolidated AS4/PEEK T-joints. in P Ermanni (ed.), 8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013): Novel Aspects in Composite Technologies: from Fibre to Lightweight Structures. Curran Associates, pp. 163-170, 8th SAMPE Europe Technical Conference & Table Top Exhibition, SETEC 2013, Wuppertal, Germany, 11/09/13.

Pull-off strength assessment of co-consolidated AS4/PEEK T-joints. / Rietman, Bert; Akkerman, Remko.

8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013): Novel Aspects in Composite Technologies: from Fibre to Lightweight Structures. ed. / P. Ermanni. Curran Associates, 2013. p. 163-170.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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N2 - Various joining methods are available for composite structures, with anticipated benefits for the most obvious way of exploiting the nature of thermoplastic materials: melting and reconsolidation. A proper joint selection and detailed design, however, will require quantitative results obtained in an objective and reproducible procedure. The objective of this paper was to develop benchmark procedures and results for the characterization of joining methods for composite materials. AS4 carbon/PEEK joints (UD tape) were manufactured in T-configurations by autoclave processing. Two types of T-joints were co-consolidated on the skin, from a flat strip with an injection molded nugget (“butt joint”) or from a pre-consolidated T-stiffener, respectively. RTD, CTD and HW experiments were performed on both types of configurations. The pre-consolidated T-stiffeners have a higher pull-off load and more gradual damage development than the flat strip/nugget configuration, at the cost of added mass. Also here CTD and RTD performances are similar, whereas the flat strip/nugget configuration shows no significant strength reduction in HW conditions, against 30% for the pre-consolidated T-stiffener configuration.

AB - Various joining methods are available for composite structures, with anticipated benefits for the most obvious way of exploiting the nature of thermoplastic materials: melting and reconsolidation. A proper joint selection and detailed design, however, will require quantitative results obtained in an objective and reproducible procedure. The objective of this paper was to develop benchmark procedures and results for the characterization of joining methods for composite materials. AS4 carbon/PEEK joints (UD tape) were manufactured in T-configurations by autoclave processing. Two types of T-joints were co-consolidated on the skin, from a flat strip with an injection molded nugget (“butt joint”) or from a pre-consolidated T-stiffener, respectively. RTD, CTD and HW experiments were performed on both types of configurations. The pre-consolidated T-stiffeners have a higher pull-off load and more gradual damage development than the flat strip/nugget configuration, at the cost of added mass. Also here CTD and RTD performances are similar, whereas the flat strip/nugget configuration shows no significant strength reduction in HW conditions, against 30% for the pre-consolidated T-stiffener configuration.

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Rietman B, Akkerman R. Pull-off strength assessment of co-consolidated AS4/PEEK T-joints. In Ermanni P, editor, 8th SAMPE Europe Technical Conference & Table Top Exhibition 2013 (SETEC 2013): Novel Aspects in Composite Technologies: from Fibre to Lightweight Structures. Curran Associates. 2013. p. 163-170