Load-dependent Optimization of Honeycombs for Sandwich Components – New Possibilities by Using Additive Layer Manufacturing

Riss, Fabian; Schilp, Johannes; Reinhart, Günther

doi:10.1016/j.phpro.2014.08.178

Cited by 27 publications

(13 citation statements)

References 3 publications

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“…This process demonstrated the previous work can be applied to complex sandwich manufacture, and could be applied to complex panel repair. An application to composite sandwich structures has been explored by Riss et al, 38 demonstrating the potential of manufacturing curved honeycomb structures through AM; modifying wall thickness within the CAD design to ensure reinforcement is in the loaded areas.…”

Section: Am For Core Applicationsmentioning

confidence: 99%

The manufacture of honeycomb cores using Fused Deposition Modeling

Pollard

Ward

Herrmann

et al. 2017

Advanced Manufacturing: Polymer & Composites Science

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Section: Am For Core Applicationsmentioning

confidence: 99%

The manufacture of honeycomb cores using Fused Deposition Modeling

Pollard

Ward

Herrmann

et al. 2017

Advanced Manufacturing: Polymer & Composites Science

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“…An increased interest in the recent advances in the field of additive manufacturing (AM) is the flexibility to produce complex geometric parts, which are net-shaped with mechanical functionalities, such as in sandwich structures with AM honeycomb cores [12,13]. Combining the principles of joining and the polymeric AM, Falck et al [14] recently introduced the AddJoining technology as an alternative method to produce metal–polymer (composite) layered structures.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Performance of Additively Manufactured Aluminum 2024-T3/Acrylonitrile Butadiene Styrene Hybrid Joints Using an AddJoining Technique

2019

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AddJoining is an emerging technique that combines the principles of the joining method and additive manufacturing. This technology is an alternative method to produce metal–polymer (composite) structures. Its viability was demonstrated for the material combination composed of aluminum 2024-T3 and acrylonitrile butadiene styrene to form hybrid joints. The influence of the isolated process parameters was performed using the one-factor-at-a-time approach, and analyses of variance were used for statistical analysis. The mechanical performance of single-lap joints varied from 910 ± 59 N to 1686 ± 39 N. The mechanical performance thus obtained with the optimized joining parameters was 1686 ± 39 N, which failed by the net-tension failure mode with a failure pattern along the 45° bonding line. The microstructure of the joints and the fracture morphology of the specimens were studied using optical microscopy and scanning electron microscopy. From the microstructure point of view, proper mechanical interlocking was achieved between the coated metal substrate and 3D-printed polymer. This investigation can be used as a base for further improvements on the mechanical performance of AddJoining hybrid-layered applications.

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“…Secondary-bonded face sheets can completely eliminate telegraphing [75]. Riss et al [76] developed an anti-telegraphing solution with additive layer manufactured honeycombs.…”

Section: Telegraphing Effect Of Face Sheets At Honeycomb Corementioning

confidence: 99%

Mechanisms of Origin and Classification of Out-of-Plane Fiber Waviness in Composite Materials—A Review

2020

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Out-of-plane fiber waviness, also referred to as wrinkling, is considered one of the most significant effects that occur in composite materials. It significantly affects mechanical properties, such as stiffness, strength and fatigue and; therefore, dramatically reduces the load-carrying capacity of the material. Fiber waviness is inherent to various manufacturing processes of fiber-reinforced composite parts. They cannot be completely avoided and thus have to be tolerated and considered as an integral part of the structure. Because of this influenceable but in many cases unavoidable nature of fiber waviness, it might be more appropriate to consider fiber waviness as effects or features rather than defects. Hence, it is important to understand the impact of different process parameters on the formation of fiber waviness in order to reduce or, in the best case, completely avoid them as early as possible in the product and process development phases. Mostly depending on the chosen geometry of the part and the specific manufacturing process used, different types of fiber waviness result. In this study, various types of waviness are investigated and a classification scheme is developed for categorization purposes. Numerous mechanisms of wrinkling were analyzed, leading to several recommendations to prevent wrinkle formation, not only during composite processing, but also at an earlier design stage, where generally several influence factors are defined.

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Load-dependent Optimization of Honeycombs for Sandwich Components – New Possibilities by Using Additive Layer Manufacturing

Cited by 27 publications

References 3 publications

The manufacture of honeycomb cores using Fused Deposition Modeling

The manufacture of honeycomb cores using Fused Deposition Modeling

Microstructure and Mechanical Performance of Additively Manufactured Aluminum 2024-T3/Acrylonitrile Butadiene Styrene Hybrid Joints Using an AddJoining Technique

Mechanisms of Origin and Classification of Out-of-Plane Fiber Waviness in Composite Materials—A Review

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