Finite element optimisation for rotational moulding with a core to manufacture intrinsic hybrid FRP metal pipes

Nieschlag, Jonas; Ruhland, Paul; Daubner, Simon; Koch, Simon-Frederik; Fleischer, Jürgen

doi:10.1007/s11740-017-0788-6

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…(2018) and Nieschlag et al. (2018). Co-curing composites are considered to be efficient as both the curing and the joining process for the composite are achieved simultaneously (Shin, Lim & Lee 2003).…”

Section: Manufacturing Techniquementioning

confidence: 96%

“…It should be noted that the proposed manufacturing technique is not limited to autoclave curing and may be extended to other composites manufacturing processes. The composite may be co-cured or co-bonded to solid interface elements to form an intrinsic hybrid structure as proposed by Kießling et al (2018) and Nieschlag et al (2018). Co-curing composites are considered to be efficient as both the curing and the joining process for the composite are achieved simultaneously (Shin, Lim & Lee 2003).…”

Section: Bagging and Curingmentioning

confidence: 99%

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Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

et al. 2019

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This paper presents a novel manufacturing technique for complex-shaped, hybrid metal composite structures leveraging the design freedom of additive manufacturing (AM). The key novelty of this research is an approach for an autoclave-suitable and removable tooling, which consists of a 3D-printed functional shell and a structural filler material. In this process, a layup shell is produced with AM and filled with a temperature-resistant curing support to form a removable inner tooling. The functional shell has integrated design features for the positioning and the fixation of metallic interface elements and is removed after curing through integrated breaking lines. The feasibility of this manufacturing technique is demonstrated by fabricating a novel lightweight structure for the hydraulic quadruped (HyQ) robot. Selective laser sintering (SLS) was used to produce the functional shell tooling. Titanium interface elements made via selective laser melting (SLM) were assembled to the shell and co-cured to carbon fiber using an autoclave prepreg process. The resulting multi-material structure was tested in ultimate strength and successfully operated on the HyQ robot. Weight savings of 55% compared to a reference design and the mechanical viability of the multi-material structure indicate that the proposed manufacturing technique is appropriate for individualized hybrid composite structures with complex geometries.

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Section: Manufacturing Techniquementioning

confidence: 96%

Section: Bagging and Curingmentioning

confidence: 99%

Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

et al. 2019

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“…For the manufacturing of intrinsic metal-CFRP hybrids, different processes are suitable. In [12], rotational moulding is used to produce shaft connections while in [13], automated fibre placement (AFP) is used to build up multilayer inserts. The good mechanical performance of such a hybrid specimen under laboratory conditions in quasi-static and dynamic tension testing is shown in [3,6].…”

Section: Intrinsic Metal-cfrp-hybridsmentioning

confidence: 99%

Section: Intrinsic Metal-cfrp-hybridsmentioning

confidence: 99%

Mechanical Behaviour of a Metal-CFRP-Hybrid Structure and Its Components under Quasi-Static and Dynamic Load at Elevated Temperature

2022

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Hybrid materials containing a light metal and CFRP are capable to make a relevant contribution in lightweight design and thereby in reducing greenhouse gases causing global warming. An aluminium CFRP-hybrid specimen with a thermoplastic interlayer that is suitable for application for the A-, B-, or C-pillar in a car is investigated in this work regarding the mechanical behaviour due to temperature variation. For this purpose, quasi-static as well as dynamic tensile tests are carried out not only for those hybrid specimens but also for their respective single-material components. Those are supported by various non-destructive testing (NDT) techniques such as thermography and CT-scans of X-ray tomography. The examination of the single materials as well as the hybrid specimens gives us the possibility to understand if a change in the damage process of the hybrid is caused by one of the single materials or the interaction of them. The use of the NDT techniques in combination with the mechanical experiments allows us to obtain a deeper look at the mechanisms causing the respective damage. It stands out that temperature changes affect the damage mechanisms in the hybrid significantly without having great influence on the single materials. In quasistatic testing, the maximum displacement of the hybrid specimens rises at elevated temperature, and in dynamic testing the initial stiffness and the sustained cycles decline significantly. It therefore can be concluded that the interfaces inside the hybrids are affected by temperature changes and play a major role concerning the damage mechanisms. The pure knowledge about the temperature behaviour of single materials is not sufficient for anticipating the behaviour of hybrid specimens under these restrictions.

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Load Bearing Behaviour of Thermoplastic Composite/Metal Hollow Structures with Multiscale Form Closure

Grützner

Würfel

Müller

et al. 2022

2nd International Conference on Advanced Joining Processes (AJP 2021)

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Finite element optimisation for rotational moulding with a core to manufacture intrinsic hybrid FRP metal pipes

Cited by 6 publications

References 7 publications

Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

Mechanical Behaviour of a Metal-CFRP-Hybrid Structure and Its Components under Quasi-Static and Dynamic Load at Elevated Temperature

Load Bearing Behaviour of Thermoplastic Composite/Metal Hollow Structures with Multiscale Form Closure

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