2020
Herwig, Alexander; Schmidt, Carsten; Horst, Peter
Investigation of Asymmetrical Fiber Metal Hybrids Used as Load Introduction Element for Thin-Walled CFRP Structures Vortrag
Gulf of Naples, Italy, 15.07.2020.
Abstract | BibTeX | Schlagwörter: Multilayer Insert
@misc{Herwig2020,
title = {Investigation of Asymmetrical Fiber Metal Hybrids Used as Load Introduction Element for Thin-Walled CFRP Structures},
author = {Alexander Herwig and Carsten Schmidt and Peter Horst},
editor = {CIRP ICME ’20 - 14th CIRP Conference on INTELLIGENT COMPUTATION IN MANUFACTURING ENGINEERING},
year = {2020},
date = {2020-07-15},
booktitle = {14th CIRP Conference on Intelligent Computation in Manufacturing Engineering
},
address = {Gulf of Naples, Italy},
abstract = {Due to the industrial success of fiber reinforced plastic (FRP) light-weight components, the demand for joining methods suitable for FRP also increases. Conventional joining elements like rivets and screws or a simple clamping are not designed for an application in FRP components. Thus, fail to consider the orthotropic fiber properties, which, in most cases, leads to poor results and an inferior joint. Therefore, this investigation presents the concept of a layered local metal-hybrid area that can be used as a load introduction element. The design of the hybrid area is discussed for several stacking options. Furthermore, the sensitivity to geometrical design variables and asymmetrical stackings are investigated by a simplified two-dimensional finite element model. The deduced parameter relations are discussed in the context of an application in an automated fiber placement process in order to formulate a parameter recommendation.},
keywords = {Multilayer Insert},
pubstate = {published},
tppubtype = {presentation}
}
Weykenat, Jannik; Herwig, Alexander; Serna, Jonathan; Schmidt, Carsten
Local Fiber-Metal-Laminate used as Load Introduction element for Thin-Walled CFRP Structures Vortrag
26.05.2020.
BibTeX | Schlagwörter: Fiber-Metal Laminate, Intrinsic Hybridisation, Multilayer Insert
@misc{Weykenat2020,
title = {Local Fiber-Metal-Laminate used as Load Introduction element for Thin-Walled CFRP Structures},
author = {Jannik Weykenat and Alexander Herwig and Jonathan Serna and Carsten Schmidt},
editor = {4th Internation Conference Hybrid 2020 – Materials and Structures, Karlsruhe, Deutschland},
year = {2020},
date = {2020-05-26},
keywords = {Fiber-Metal Laminate, Intrinsic Hybridisation, Multilayer Insert},
pubstate = {published},
tppubtype = {presentation}
}
2019
Serna, Jonathan; Herwig, Alexander; Weykenat, Jannik; Schmidt, Carsten; Horst, Peter; Meiners, Dieter; Denkena, Berend
Intrinsische Hybridverbunde zur Krafteinleitung in dünnwandige Hochleistungs-CFK-Strukturen Vortrag
28.06.2019.
BibTeX | Schlagwörter: Fiber-Metal Laminate, Intrinsic Hybridisation, Multilayer Insert
@misc{Serna2019,
title = {Intrinsische Hybridverbunde zur Krafteinleitung in dünnwandige Hochleistungs-CFK-Strukturen},
author = {Jonathan Serna and Alexander Herwig and Jannik Weykenat and Carsten Schmidt and Peter Horst and Dieter Meiners and Berend Denkena},
editor = {23. Internationales Dresdner Leichtbausymposium},
year = {2019},
date = {2019-06-28},
keywords = {Fiber-Metal Laminate, Intrinsic Hybridisation, Multilayer Insert},
pubstate = {published},
tppubtype = {presentation}
}
2018
Serna, Jonathan
Multilayer-Inserts – MLI Krafteinleitung in dünnwandige CFK-Strukturen durch lokale Hybridisierung Konferenzbeitrag
In: Leichtbau, 5. Technologietag Hybrider (Hrsg.): Stuttgart, 2018.
BibTeX | Schlagwörter: Multilayer Insert
@inproceedings{Serna2018,
title = {Multilayer-Inserts – MLI Krafteinleitung in dünnwandige CFK-Strukturen durch lokale Hybridisierung},
author = {Jonathan Serna },
editor = {5. Technologietag Hybrider Leichtbau},
year = {2018},
date = {2018-07-31},
address = {Stuttgart},
keywords = {Multilayer Insert},
pubstate = {published},
tppubtype = {inproceedings}
}
Herwig, Alexander; Schmidt, Carsten; Horst, Peter
Numerical Investigation of a Layered Hybrid Load Introduction Element for Thin-Walled CFRP Structures Konferenzbeitrag
In: ECCM18, (Hrsg.): 2018.
BibTeX | Schlagwörter: Embedded Load Introduction Element, Fiber-Metal Laminate, Multilayer Insert
@inproceedings{Herwig2018b,
title = {Numerical Investigation of a Layered Hybrid Load Introduction Element for Thin-Walled CFRP Structures },
author = {Alexander Herwig and Carsten Schmidt and Peter Horst },
editor = {ECCM18},
year = {2018},
date = {2018-06-24},
keywords = {Embedded Load Introduction Element, Fiber-Metal Laminate, Multilayer Insert},
pubstate = {published},
tppubtype = {inproceedings}
}
Groß, Lukas; Herwig, Alexander; Berg, David C.; Schmidt, Carsten; Denkena, Berend; Horst, Peter; Meiners, Dieter
Production-based design of a hybrid load introduction element for thin-walled CFRP Structures Artikel
In: Production Engineering, S. 8, 2018, ISSN: 1863-7353.
Abstract | Links | BibTeX | Schlagwörter: Automated Fiber Placement, Composite Structures, Embedded Load Introduction Element, Fiber-Metal Laminate, Multilayer Insert
@article{Groß2018,
title = {Production-based design of a hybrid load introduction element for thin-walled CFRP Structures},
author = {Lukas Groß and Alexander Herwig and David C. Berg and Carsten Schmidt and Berend Denkena and Peter Horst and Dieter Meiners},
url = {https://link.springer.com/article/10.1007/s11740-018-0821-4},
doi = {https://doi.org/10.1007/s11740-018-0821-4},
issn = {1863-7353},
year = {2018},
date = {2018-03-21},
journal = {Production Engineering},
pages = {8},
abstract = {The project “Multi-Layer Inserts” (MLI) proposes a new design for inserts used in thin-walled CFRP structures. The proposed inserts consist of multiple thin metal sheets and is build up simultaneously with the laminate in an intrinsic hybridization process, eliminating time-consuming post-processing steps. Furthermore, at equal weight, such inserts greatly increase the bonding area between metal and CFRP in comparison to conventional inserts. This results in a significant increase of the loads that can be transmitted into the CFRP. The present work discusses how the shape of the metal sheets which the proposed inserts consist of influences the mechanical properties of the surrounding laminate. This influence is investigated by measuring the strain distribution during tensile tests by means of digital image correlation. The strain distributions around the following three different MLI design approaches are compared: An elliptical metal sheet, which is expected to be ideal in terms of mechanical performance of the overall structure; a cross-shape metal sheet representing a production-driven simplification which only requires the ability to perform cuts in individual tows perpendicular to the laying direction and can be performed by state-of-the-art AFP systems; and lastly, a compromise between manufacturability and achieved mechanical performance, a decagonal metal sheet design, which requires angled cuts of the fiber tows. It is shown, that the decagon is able to evenly spread the strain over a larger area and is therefore able to significantly reduce the maximum strain values compared to a cross-shape metal sheet, while still being automatable.},
keywords = {Automated Fiber Placement, Composite Structures, Embedded Load Introduction Element, Fiber-Metal Laminate, Multilayer Insert},
pubstate = {published},
tppubtype = {article}
}
2017
Serna, Jonathan
Krafteinleitung in dünnwandige Strukturen durch lokale Hybridisierung Konferenz
2017.
BibTeX | Schlagwörter: Multilayer Insert
@conference{Serna2017,
title = {Krafteinleitung in dünnwandige Strukturen durch lokale Hybridisierung},
author = {Jonathan Serna},
year = {2017},
date = {2017-05-15},
journal = {DGM Sitzung FA „Hybride Werkstoffe und Strukturen“},
keywords = {Multilayer Insert},
pubstate = {published},
tppubtype = {conference}
}
2016
Horst, Peter; Woidt, Malte; Herwig, Alexander
Comparison of one-, two- and three-dimensional models of a metallic insert in a composite Konferenzbeitrag
In: FDM - 15th international conference on fracture and damage mechanics, Alicante, Spain, 2016.
BibTeX | Schlagwörter: Multilayer Insert
@inproceedings{Horst2016,
title = {Comparison of one-, two- and three-dimensional models of a metallic insert in a composite},
author = {Peter Horst and Malte Woidt and Alexander Herwig},
year = {2016},
date = {2016-09-14},
booktitle = {FDM - 15th international conference on fracture and damage mechanics},
address = {Alicante, Spain},
keywords = {Multilayer Insert},
pubstate = {published},
tppubtype = {inproceedings}
}
Koch, Simon-F.; Barfuss, Daniel; Bobbert, Mathias; Groß, Lukas; Grützner, Raik; Riemer, Matthias; Stefaniak, Daniel; Wang, Zhen
Intrinsic hybrid composites for lightweight structures: New Process Chain Approaches Konferenz
Proceedings of 2016 WGP Congress, 2016.
Abstract | BibTeX | Schlagwörter: Automated Fiber Placement, Composite Structures, Intrinsic Hybridisation, Multilayer Insert
@conference{Koch2016,
title = {Intrinsic hybrid composites for lightweight structures: New Process Chain Approaches},
author = {Simon-F. Koch and Daniel Barfuss and Mathias Bobbert and Lukas Groß and Raik Grützner and Matthias Riemer and Daniel Stefaniak and Zhen Wang},
year = {2016},
date = {2016-08-25},
booktitle = {Proceedings of 2016 WGP Congress},
abstract = {This publication describes new process chain approaches for the manufacturing of intrinsic hybrid composites for lightweight structures. The introduced process chains show a variety of different part and sample types, like insert technology for fastening of hollow hybrid shafts and profiles. Another field of research are hybrid laminates with different layers of carbon fiber reinforced plastics stacked with aluminum or steel sheets. The derived process chains base on automated fiber placement, resin transfer molding, deep drawing, rotational molding and integral tube blow molding.},
keywords = {Automated Fiber Placement, Composite Structures, Intrinsic Hybridisation, Multilayer Insert},
pubstate = {published},
tppubtype = {conference}
}
Schmidt, Carsten; Denkena, Berend; Groß, Lukas
Concept for automated production of CFRP-metal hybrid compounds integrated in an Automated Fiber Placement process Konferenz
10th CIRP Conference on Intelligent Computation in Manufacturing Engineering, Neapel, Italien, 2016.
Abstract | BibTeX | Schlagwörter: Automated Fiber Placement, Composite Structures, Intrinsic Hybridisation, Multilayer Insert
@conference{Schmidt2016b,
title = {Concept for automated production of CFRP-metal hybrid compounds integrated in an Automated Fiber Placement process},
author = {Carsten Schmidt and Berend Denkena and Lukas Groß},
year = {2016},
date = {2016-08-25},
booktitle = {10th CIRP Conference on Intelligent Computation in Manufacturing Engineering},
address = {Neapel, Italien},
abstract = {To solve the problem of load transmission into thin walled CFRP Structures, a new joining technology is being developed (Multi Layer Insert – MLI). It consists of multiple thin metal foils to distribute load optimally into every single CFRP layer. The placement process for the metal layers is integrated into an Automated Fiber Placement system. In this paper, a process sequence of MLI placement is presented containing the following steps: stockpiling of metal layers, separation, handling, positioning, lay up and fixation of metal layers during fiber placement. Moreover, the monitoring and control concept is discussed.},
keywords = {Automated Fiber Placement, Composite Structures, Intrinsic Hybridisation, Multilayer Insert},
pubstate = {published},
tppubtype = {conference}
}
Herwig, Alexander; Groß, Lukas; Serna, Jonathan; Denkena, Berend; Schmidt, Carsten
Entwicklung eines mehrlagigen Inserts für dünnwandige Hochleistungs-CFK- Strukturen Artikel
In: Lightweight Design, Bd. 9, Nr. 1, S. 22-27, 2016, ISSN: 1865-4819.
Abstract | Links | BibTeX | Schlagwörter: Composite Structures, Intrinsic Hybridisation, Multilayer Insert
@article{Herwig2016,
title = {Entwicklung eines mehrlagigen Inserts für dünnwandige Hochleistungs-CFK- Strukturen},
author = {Alexander Herwig and Lukas Groß and Jonathan Serna and Berend Denkena and Carsten Schmidt},
editor = {Wolfgang Siebenpfeifer Springer Vieweg},
doi = {10.1007/s35725-015-0064-7},
issn = {1865-4819},
year = {2016},
date = {2016-01-01},
journal = {Lightweight Design},
volume = {9},
number = {1},
pages = {22-27},
abstract = {Hochbelastete Verbindungen von dünnwandigen Strukturen werden im Flugzeug- und Automobilbau häufig als Klebungen oder als Überlappungsfügung mit Bolzen realisiert. Durch den zunehmenden Einsatz von Faser-Kunstoff-Verbunden (FKV) entsteht der Bedarf neuer Verbingungstechnologien, die ein faser- und belastungsgerechtes Fügen der Strukturen erlauben. Konventionelle Nietverbindungen und eingebrachte Metallstrukturen wie Gewindeeinsätze oder bigHeads bilden eine überprüfbare formschlüssige Verbindung. Die Krafteinteilung erfolgt über die Kontaktflächen der Metallstruktur in die angrenzenden Schichten des Laminats. Typische Ausführungen von Verbindungselementen sind in Bild 1 dargestellt. Das Einbringen dieser Inserts als Fremdkörper in ein Laminat bedingt eine lokale Aufdickung und führt zu einer Störung des Faserverlaufs und damit zu einer Schwächung des Bauteils. Dieser Problematik Multilayer-Inserts (MLI). Der erarbeitete Ansatz verfolgt eine lokale intrinsische Hybridisierung des Laminats bereits während der Ablage der CFK-Einzelschichten durch dünne Metallschichten ersetzt werden.},
keywords = {Composite Structures, Intrinsic Hybridisation, Multilayer Insert},
pubstate = {published},
tppubtype = {article}
}