Review of through-the-thickness reinforced composites in joints

Sarantinos, N.; Tsantzalis, S.; Ucsnik, Stephan; Kostopoulos, V.

doi:10.1016/j.compstruct.2019.111404

Cited by 40 publications

(13 citation statements)

References 47 publications

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“…In [14] different pin-based through the thickness reinforced joints are compared by Sarantinos et al In this study it is concluded that thin and long pins are favorable for a high energy response and that a form fit geometry typically leads to a high stiffness and strength response. However, only thermoset plastics which are joined with the pin structures before curing are investigated in this study, therefore, the results are only partially comparable to the joining of metal and CFRT components, since the joining process technology with uncured thermosetting matrix does significantly vary from joining of thermoplastic and different fiber orientation mechanisms can expected with different matrix systems due to different matrix properties.…”

Section: Introductionmentioning

confidence: 86%

Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins

et al. 2021

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Continuous Fiber Reinforced Thermoplastic (CFRT) hybrid parts offer interesting possibilities for lightweight application, which can exceed the capabilities of mono material metal or CFRT parts. In this case, the joining technology oftentimes is the limiting factor. This study investigates a joining operation with metal pin structures which are additively manufactured via powder bed fusion featuring different diameters and tip geometries, which are inserted into the locally infrared heated CFRT part. The resulting fiber rearrangement is assessed using transmitted light microscopy, confocal laser scanning microscopy as well as micro-computer-tomography. It could be shown that for all assessed pin variants a similar distinct fiber displacement can be seen and that the pin diameter has a significant effect on the resulting fiber orientation with smaller pin diameters being advantageous because of gentle fiber displacement and reduced undulation. The tip geometry has only minor effect on the fiber orientation. Especially in the X/Y plane no systematic influence of the tip geometry on the fiber displacement could be observed. Based on the gained insights a three-stage model of the fiber orientation processes is proposed.

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Section: Introductionmentioning

confidence: 86%

Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins

et al. 2021

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“…The formed heads (e.g., spherically) improve the damage tolerance and give the joint additional resistance against the through-thickness separation of the two different materials. A comprehensive literature review of through-the-thickness reinforcements is given by Mouritz [122] and Sarantinos et al [130]. 4.7.2.…”

Section: Foreign Objectsmentioning

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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“…This section presents and summarizes works which aim to improve the performance of adhesive bonded joints performance with an optimized geometrical design of the adherend in the overlap area. The approaches presented here were often originally proposed for laminate materials [ 20 , 47 ], which have many similarities to AM processed components, such as a layering effect and an anisotropic behavior under load [ 48 ].…”

Section: Joint Design Strategies For Additive Manufacturingmentioning

confidence: 99%

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

et al. 2020

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This review aims to assess the current modelling and experimental achievements in the design for additive manufacturing of bonded joints, providing a summary of the current state of the art. To limit its scope, the document is focused only on polymeric additive manufacturing processes. As a result, this review paper contains a structured collection of the tailoring methods adopted for additively manufactured adherends and adhesives with the aim of maximizing bonded joint performance. The intent is, setting the state of the art, to produce an overview useful to identify the new opportunities provided by recent progresses in the design for additive manufacturing, additive manufacturing processes and materials’ developments.

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Review of through-the-thickness reinforced composites in joints

Cited by 40 publications

References 47 publications

Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins

Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins

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

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

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