Experimental investigation and characterisation techniques of compressive fatigue failure of composites with fibre waviness at ply drops

Wang, Jinhuo; Potter, Kevin D; Etches, Julie A

doi:10.1016/j.compstruct.2013.01.010

Cited by 27 publications

(15 citation statements)

References 11 publications

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“…a particular material architecture and loading case to give a contribution on the subject. To investigate the effect of material defects such as fibre waviness and ply drops on the fatigue performance of composite structures, J. Wang et al [8] used 15 Hz video camera. Fibre waviness and ply drops were intentionally created in both longitudinal and transverse direction during laminate manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

Beyene

Belingardi

2015

Composite Structures

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Section: Introductionmentioning

confidence: 99%

Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

Beyene

Belingardi

2015

Composite Structures

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“…These defects affect the quality of consolidation and thence the fatigue life [92,93,88,70,94,71]. Out-of-plane waviness affects the static compressive strength and stiffness of composites, and decreases its fatigue life (C-C) [95,96,97]. The fatigue life of axially loaded CFRP with induced outof-plane fibre waviness, gives rise to a severe degradation of the fatigue life properties of CFRP in (T-T) and (C-C) loading [98,70].…”

Section: Effect Of Processing/manufacturing Defects On the Fatigue Prmentioning

confidence: 99%

The fatigue of carbon fibre reinforced plastics - A review

Alam

Mamalis

Robert

et al. 2019

Composites Part B: Engineering

260

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Engineering structures are often subjected to the conditions of cyclic-loading, which onsets material fatigue, detrimentally affecting the service-life and damage tolerance of components and joints. Carbon fibre reinforced plastics (CFRP) are high-strength, lowweight composites that are gaining ubiquity in place of metals and glass fibre reinforced plastics (GFRP) not only due to their outstanding strength-to-weight properties, but also because carbon fibres are relatively inert to environmental degradation and as such, show potential as corrosion resistant materials. The effects of cyclic loading on the fatigue of CFRP are detailed in several papers. As such, collating research on CFRP fatigue into a single document is a worthwhile exercise, as it will benefit the engineering-readership interested in designing fatigue resistant structures and components using CFRP. This review article aims to provide the most relevant and up-to-date information on the fatigue of CFRP. The review focuses in particular on defining fatigue and the mechanics of cyclically-loaded composites, elucidating the fatigue response and fatigue properties of CFRP in different forms, discussing the importance of environmental factors on the fatigue performance and service-life, and summarising the different approaches taken to modelling fatigue in CFRP.

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“…2, the geometry of a typical undulation is described by the ratio of the amplitude, d, to the wavelength, k, of the undulation. The severity of both the waviness and wrinkling are commonly characterized by the magnitude of d/k which is referred to as the amplitude-to-wavelength ratio (Altmann et al, 2015;Mukhopadhyay et al, 2015;Wang et al, 2013). These preform defects in composite parts are subject to various parameters influencing the fabrication processes.…”

Section: Preform Defects In Lcmmentioning

confidence: 99%

“…Following the success of such applications, there has been increased interest in using advanced composites for higher production rate and cost sensitive fields such as automotive, marine and wind energy applications, among others (Altmann et al, 2016;Gourichon et al, 2006;Kedari et al, 2011;Wang et al, 2013). In this context, significant attention has been placed on developing lower-cost, higher performance Liquid Composite Molding (LCM) processes that can produce medium to large composites structures.…”

Section: Introductionmentioning

confidence: 99%

Process Induced Defects in Liquid Molding Processes of Composites

Hamidi

Altan

2017

International Polymer Processing

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Liquid Composite Molding (LCM) processes are cost efficient manufacturing alternatives to traditional autoclave technology for producing near-net shape structural composite parts. However, process induced defects often limit wider usage of LCM in structural applications. Thorough knowledge of these defects, as well as their formation mechanisms and prevention techniques, is essential in developing improved LCM processes. In this article, process induced defects in liquid molding processes of composites, categorized into preform, flow induced and cure induced defects, are reviewed. Preform defects are further presented as fiber misalignment and fiber undulation (waviness and wrinkling). The respective causes, detrimental effects, and possible prevention methods of these defects are presented. Thereafter, flow induced defects are classified as voids and dry spots. Dry spot formation mechanisms in LCM processes and available prevention techniques are summarized. In addition, void formation mechanisms, adverse effects on composite properties, and removal techniques are presented. Cure induced defects include microcracks, void growth and geometrical distortions (warpage and spring-in). Each of these defects are discussed along with their underlying causes as well as their control and reduction schemes.

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Experimental investigation and characterisation techniques of compressive fatigue failure of composites with fibre waviness at ply drops

Cited by 27 publications

References 11 publications

Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

Bending fatigue failure mechanisms of twill fabric E-Glass/Epoxy composite

The fatigue of carbon fibre reinforced plastics - A review

Process Induced Defects in Liquid Molding Processes of Composites

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