Mechanics of 3D Fibre Reinforced Polymer Composites

Mouritz, A.P.

doi:10.1007/978-3-662-53605-6_93-1

Cited by 2 publications

(3 citation statements)

References 128 publications

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“…the through-thickness direction or z direction, is also reinforced, one speaks of the so-called 3D composites. The three most common manufacturing techniques are 3D weaving, stitching and z-pining [41]. Hi-Fig.…”

Section: Multi-directional Compositesmentioning

confidence: 99%

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A review of critical issues in the design of lightweight flywheel rotors with composite materials

Mittelstedt

Binder

2022

Elektrotech. Inftech.

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Composite materials are widely used to build high-performance flywheels due to their high material strength and low mass density. The high degrees of freedom in material selection, design, and manufacturing techniques lead to a variety of rotor structures. This paper presents the characteristics of different composite rotors and the critical considerations in terms of designing, manufacturing, and testing them. The introduction starts with the limitations of a single filament-wound composite rim. Then, various rotor structures are presented as well as the critical issues regarding the composite rim design, rim-shaft connection, and rotor failure in order to make safe design recommendations. The aim is to summarize the current techniques and provide references for further developments.

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Section: Multi-directional Compositesmentioning

confidence: 99%

“…However, they are also prone to cause fiber waviness and crimp in the vicinity of axial bundles, which causes micro-buckling and kinking of the in-plane ply and decreases the above in-plane properties. Their applications are limited so far and their future is still uncertain [41].…”

Section: Multi-directional Compositesmentioning

confidence: 99%

A review of critical issues in the design of lightweight flywheel rotors with composite materials

Mittelstedt

Binder

2022

Elektrotech. Inftech.

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“…However, their application is challenging due to their sensitivity to delamination failure caused by typically very low through-thickness strength dominated by the thermoplastic matrix material [10]. The delamination resistance and the corresponding properties can be improved by using several TTR techniques [11,12]. The z-pinning technology, where a pin is integrated in through-thickness direction of the composite shows large analogies to pin-supported mechanical joining with regard to the strengthening mechanism and is applied as well in joints [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Numerical Modelling of Through-Thickness Metallic-Pin-Reinforced Fibre/Thermoplastic Composites under Bending Loading

et al. 2020

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Through-Thickness Reinforcement (TTR) technologies are well suited to improving the mechanical properties in the out-of-plane direction of fibre-reinforced composites. However, besides the enhancement of delamination resistance and thus the prevention of overall catastrophic failure, the presence of additional reinforcement elements in the composite structure affects also the mechanical properties in in-plane direction. In this work, the flexural behaviour of a glass-polypropylene (GF/PP) hybrid yarn-based composite with TTR in form of metallic pins has been investigated experimentally and numerically. The insertion of the metallic pins is realized via thermoactivated pinning technology (TAP). In four-point-bending tests, it is shown that the flexural stiffness and strength decreases with an increase of the overall pin density. Hereby, it is observed that the pins act as crack initiators. For numerical modelling on specimen level, a continuum damage mechanic (CDM) model is used to predict the nonlinear deformation response of the composite, as well as fibre fracture and matrix cracking. A debonding and slipping phenomena of the pin in the composite is modelled by a cohesive zone modelling approach for the interface between pin and composite.

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Mechanics of 3D Fibre Reinforced Polymer Composites

Cited by 2 publications

References 128 publications

A review of critical issues in the design of lightweight flywheel rotors with composite materials

A review of critical issues in the design of lightweight flywheel rotors with composite materials

Characterization and Numerical Modelling of Through-Thickness Metallic-Pin-Reinforced Fibre/Thermoplastic Composites under Bending Loading

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