2018
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}
}
Herwig, Alexander; Horst, Peter; Schmidt, Carsten; Pottmeyer, Florentin; Weidenmann, Kay André
In: Production Engineering, 2018, ISSN: 1863-7353.
Abstract | Links | BibTeX | Schlagwörter: Embedded Load Introduction Element, Fiber-Metal Laminate, Joining, Polymer-matrix composites (PMCs)
@article{Herwig2018,
title = {Design and mechanical characterisation of a layer wise build AFP insert in comparison to a conventional solution},
author = {Alexander Herwig and Peter Horst and Carsten Schmidt and Florentin Pottmeyer and Kay André Weidenmann},
editor = {Springer Berlin Heidelberg},
url = {https://link.springer.com/article/10.1007%2Fs11740-018-0815-2},
doi = {https://doi.org/10.1007/s11740-018-0815-2},
issn = {1863-7353},
year = {2018},
date = {2018-03-06},
journal = {Production Engineering},
abstract = {Joining methods that present a detachable connection of thin walled fiber reinforced plastic (FRP) structures greatly increase the proliferation of lightweight FRP-parts. This paper describes the design of a new layer wise build insert solution named multilayer insert (MLI) in a comparative study in terms of mechanical performance. The MLI is designed to be easily integrable into existing automated fiber placement processes. The mechanical characteristics and damage behavior of the MLI is compared with a commercially available insert serving as reference. Comparable results are obtained by testing the specimen in the same test setup. Both, the results of the MLI and the reference specimen show that a geometrical optimization is able to change the failure modes of the connection thereby keeping the surrounding FRP intact while improving the mechanical performance of the entire component.},
keywords = {Embedded Load Introduction Element, Fiber-Metal Laminate, Joining, Polymer-matrix composites (PMCs)},
pubstate = {published},
tppubtype = {article}
}