Fatigue life in textile composites used for wind energy engineering

Zangenberg, Jens; Brøndsted, Povl

doi:10.1016/b978-1-78242-281-5.00017-1

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…49 On the other hand, the weave pattern in textile FRCs leads to complex damage behavior under cyclic loads. 50 With the increasing use of textile composites in aerospace 51 and wind energy 52 engineering applications, a textile fabric reinforced in a thermoplastic polymer matrix was chosen for this study. The relevant properties of the CF-PEKK material are given in Table 1.…”

Section: Description Of the Composite Materialsmentioning

confidence: 99%

Influence of pulse duration on the fatigue behavior of a carbon‐fiber‐reinforced composite under cyclic three‐point bending at 20 kHz

Premanand,

Balle

2024

Fatigue Fract Eng Mat Struct

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Very high cycle fatigue (VHCF) experiments are limited in practice due to their long testing times. In ultrasonic fatigue test (UFT) systems, the cyclic oscillation is applied using resonance at 20 kHz with a pulse and pause sequence. However, determining optimal pulse durations to achieve minimal testing time and avoid thermal‐induced fatigue damage in fiber‐reinforced polymer composites remains a challenge. In this work, several fatigue experiments, temperature analyses, and digital light optical microscopy were carried out to evaluate the influence of pulse duration on the fatigue behavior of a carbon‐fiber fabric reinforced in polyether‐ketone‐ketone (CF‐PEKK) composite. A shorter pulse duration with the same pulse–pause ratio as the longer pulse duration is proposed for higher stress amplitudes to avoid any thermal influence during mechanical fatigue without altering the underlying fatigue damage mechanisms.

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Section: Description Of the Composite Materialsmentioning

confidence: 99%

Influence of pulse duration on the fatigue behavior of a carbon‐fiber‐reinforced composite under cyclic three‐point bending at 20 kHz

Premanand,

Balle

2024

Fatigue Fract Eng Mat Struct

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“…As a well-formed interface allows stress transfer from the matrix to the fiber, the mechanical properties of the composite depend on the performance of fiber–matrix interface (Kalita and Netravali, 2015; Wollerdorfer and Bader, 1998; Zangenberg and Brøndsted, 2015). Thus, shearing at the fiber–matrix interface is the most important mechanism (Miwa and Horiba, 1994) for uniform distribution of stress throughout the structure.…”

Section: The Interfacementioning

confidence: 99%

Fiber length – the persuadable factor in making natural fiber composite: a review

Datta

Das

Nath

2021

RJTA

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Purpose The study aims to review the literatures on the effect of fiber length on the mechanical response of natural fiber composite will help the researchers to know about the perspective of the various natural fibers in making of composite concerning fiber length. The review summarized the work of the other researchers, thereby unambiguously précised suitability of a specific natural fiber for a matrix in use. Thus, one can identify the use of the same fibers–matrix combination to obtain composites with different properties with the control of fiber/matrix interface. Design/methodology/approach The review work proposes a new kind of diagrammatic representation that expresses the influence of fiber length. This work has not been explored before in this specific format. The chronology of work may help to select natural fibers for use in composites for a specific matrix. Findings The length of the fiber perception in terms of “critical” length decides the need for pre-treatment process of natural fiber to improve shear stress at the interface for various matrices. Originality/value The current review paper attempts to shed light on the association between the fiber length of natural fiber and the mechanical response of natural fiber composite. Moreover, it probes the concepts of critical fiber length as a persuadable factor.

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“…Reliable designs of structures made out of carbon fabric-reinforced polymers (CFRPs) require an accurate evaluation of their fatigue life under service loading conditions [ 3 ]. Two notable applications for textile composites are aerospace [ 4 ] and wind energy engineering [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Online and Ex Situ Damage Characterization Techniques for Fiber-Reinforced Composites under Ultrasonic Cyclic Three-Point Bending

Premanand,

Prescher,

Rienks

et al. 2024

Polymers

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With ultrasonic fatigue testing (UFT), it is possible to investigate the damage initiation and accumulation from the weakest link of the composite material in the very high cycle fatigue (VHCF) regime in a shorter time frame than conventional fatigue testing. However, the thermal influence on the mechanical fatigue of composites and the scatter in fatigue data for composites under ultrasonic cyclic three-point bending loading still need to be investigated. In this study, we conducted interrupted constant-amplitude fatigue experiments on a carbon-fiber satin-fabric reinforced in poly-ether-ketone-ketone (CF-PEKK) composite material. These experiments were carried out using a UFT system, which operates at a cyclic frequency of 20 kHz with a pulse–pause sequence. Various parameters, such as the CF-PEKK specimen’s surface temperature, acoustic activity, and the ultrasonic generator’s input resonance parameters, were measured during cyclic loading. During experiment interruption, stiffness measurement and volumetric damage characterization in the CF-PEKK specimens using 3D X-ray microscopy (XRM) were performed. The locations of damage initiation and accumulation and their influence on the changes in in situ parameters were characterized. Under fixed loading conditions, damage accumulation occurred at different locations, leading to scattering in fatigue life data. Further, the damage population decreased from the surface to the bulk of the composite material.

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Fatigue life in textile composites used for wind energy engineering

Cited by 8 publications

References 14 publications

Influence of pulse duration on the fatigue behavior of a carbon‐fiber‐reinforced composite under cyclic three‐point bending at 20 kHz

Influence of pulse duration on the fatigue behavior of a carbon‐fiber‐reinforced composite under cyclic three‐point bending at 20 kHz

Fiber length – the persuadable factor in making natural fiber composite: a review

Online and Ex Situ Damage Characterization Techniques for Fiber-Reinforced Composites under Ultrasonic Cyclic Three-Point Bending

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