Impact Damage Resistance and Tolerance of Polymer Nanofiber Interleaved Composite Laminates

Akangah, Paul; Shivakumar, Kunigal

doi:10.2514/6.2012-1374

Cited by 17 publications

(19 citation statements)

References 17 publications

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“…(a) Glass fibers -Papers on Impact tests The effects of nanointerleave on CFRP subjected to LVI have been mainly investigated using PA6,6 nanofibers as reinforce [34,36,40,42]. In [34,36,40] UD samples interleaved at each interface have been tested, while [42] tested woven laminates with nanofibers only in selected interlayers.…”

Section: Impactmentioning

confidence: 99%

“…In [34,36,40] UD samples interleaved at each interface have been tested, while [42] tested woven laminates with nanofibers only in selected interlayers. An important parameter in impacts is the sample's thickness: in [34,36] nanofibers increased sample's thickness of 1-2%, while in [40,42] pristine and nanomodified samples had the same thickness, due o a lower number of interleaves. The most common impact test is the LVI test, where a spherical object is dropped falling from a certain height to the specimens [34,36,40,42].…”

Section: Impactmentioning

confidence: 99%

“…An important parameter in impacts is the sample's thickness: in [34,36] nanofibers increased sample's thickness of 1-2%, while in [40,42] pristine and nanomodified samples had the same thickness, due o a lower number of interleaves. The most common impact test is the LVI test, where a spherical object is dropped falling from a certain height to the specimens [34,36,40,42]. These papers all present very positive results in terms of improved impact threshold force (+64%), damaged area (-50%), damage resistance (3 times), delamination on-set force (+7%), threshold energy (+33%), peak force (-8%) and energy absorbed during the event (-14%) in nanomodified laminates compared to virgin ones.…”

Section: Impactmentioning

confidence: 99%

“…Literature presents only two papers on the residual compression properties of composites after impacts, and the results are summarised in Table 8 In [40] PA6,6 nanofibers are interleaved into laminates, and it is found that the compression strength after impact increased of about 10%. Similarly to what found in [42], authors observed that the compression residual strength ratio between the nanomodified and the virgin samples decreases at increasing impact energy.…”

Section: Compression After Impactmentioning

confidence: 99%

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Electrospun nanofibers as reinforcement for composite laminates materials – A review

Palazzetti

Zucchelli

2017

Composite Structures

137

113

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In the last few decades nanofibers have been developed and introduced in a vast number of industrial and research applications. One of their most effective use is as interleaved reinforcement for composite laminate materials against delamination. Nanofibrous mats have the ideal morphology to be embedded between two plies of a laminate, and a vast and deep research has been carried out investigating their effect on the global behaviour of a composite laminate. This review is the first of its kind to date which presents a detailed state-ofthe-art on the effect of nanofibrous interleaves into composite laminates with focus on the mechanical performances and behaviours of nanomodified materials. A detailed description of the working mechanisms of the nanointerleave under different load cases is presented, and a comparative analysis between papers in literature will provide readers with a powerful tool to understand and use nanofibers for reinforcing purposes.

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Section: Impactmentioning

confidence: 99%

Section: Impactmentioning

confidence: 99%

Section: Impactmentioning

confidence: 99%

Section: Compression After Impactmentioning

confidence: 99%

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Electrospun nanofibers as reinforcement for composite laminates materials – A review

Palazzetti

Zucchelli

2017

Composite Structures

137

113

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“…It has also been shown that certain nanofibre veils can be used to improve the compression after impact (CAI) [4], delamination resistance and the Mode I [5] and Mode II interlaminar fracture toughness (ILFT) of composites http://dx.doi.org/10.1016/j.compositesa.2015.01.028 1359-835X/Ó 2015 Elsevier Ltd. All rights reserved. [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Mode I and Mode II interlaminar fracture toughness of composite laminates interleaved with electrospun nanofibre veils

Beckermann¹,

Pickering²

2015

Composites Part A: Applied Science and Manufacturing

228

159

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a b s t r a c tIn this study, the effects of interleaved nanofibre veils on the Mode I and Mode II interlaminar fracture toughness (ILFT) of autoclave cured unidirectional carbon/epoxy composite laminates were investigated. Various electrospun nanofibre veils consisting of a range of different polymer types, fibre diameters and veil architectures were placed in the laminate mid-planes, which were subsequently subjected to double cantilever beam and end-notch flexure tests. It was found that the polymer type and veil areal weight were the most important factors contributing to laminate performance. A 4.5 g/m 2 PA66 veil provided the best all-round performance with fracture toughness improvements of 156% and 69% for Mode I and Mode II, respectively.

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Effect of interlaminar basalt fiber veil reinforcement on mode I fracture toughness of basalt fiber composites

Zhao,

Li,

Wang

et al. 2024

Polymer Composites

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Composite structures are vulnerable to delamination under out‐of‐plane loading due to the absence of reinforcing fibers in the thickness direction. This paper introduced the interlaminar basalt fiber veil technique to improve the interlaminar fracture toughness of basalt fiber‐reinforced thermoplastic composite laminates. The reinforcement effect of the basalt fiber veil on GIC of composite laminates was investigated by a double cantilever beam (DCB) test. The toughening effect, damage morphology, and the basalt fiber veil toughening mechanism were analyzed by mechanical response, optical photos, and scanning electron microscopy (SEM). It was found that the basalt fiber veil could significantly inhibit the propagation of interlaminar cracks. Compared to the unreinforced specimen, the maximum load of basalt fiber veil‐reinforced laminate was increased by 73%, the average platform load was increased by 72.7% and the GIC was increased by 157%.Highlights Improvement of GIC of basalt fiber‐reinforced thermoplastic laminates by basalt fiber veil. The toughening mechanism for the basalt fiber veil. The GIC of the fiber veil‐reinforced laminate was 157% higher than the unreinforced laminate.

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Impact Damage Resistance and Tolerance of Polymer Nanofiber Interleaved Composite Laminates

Cited by 17 publications

References 17 publications

Electrospun nanofibers as reinforcement for composite laminates materials – A review

Electrospun nanofibers as reinforcement for composite laminates materials – A review

Mode I and Mode II interlaminar fracture toughness of composite laminates interleaved with electrospun nanofibre veils

Effect of interlaminar basalt fiber veil reinforcement on mode I fracture toughness of basalt fiber composites

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