Principles and Applications of Microwave Testing for Woven and Non-Woven Carbon Fibre-Reinforced Polymer Composites: a Topical Review

Li, Zhen; Haigh, Arthur; Soutis, C.; Gibson, Arthur

doi:10.1007/s10443-018-9733-x

Cited by 41 publications

(15 citation statements)

References 51 publications

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“…Composite materials have an important place in many engineering applications because of their advantages and diversity. They have been increasingly used in a radar absorbing structure (RAS; Park et al, 2006;Fan et al, 2007;Choi and Kim, 2015;Wang et al, 2017;Li et al, 2018). The radar cross-section (RCS) reduction has become very important for military aircraft.…”

Section: Introductionmentioning

confidence: 99%

Investigation of cotton fabric composites as a natural radar-absorbing material

Ayan

Yapıcı

Karaaslan

et al. 2020

AEAT

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Purpose The purpose of this paper is to investigate cotton fabric behavior that is exposed to radar waves between selected operation frequencies as an alternative radar-absorbing material (RAM) response. Cotton fabric biocomposite materials were compared with carbon fabric composite materials, which are good absorbers, in terms of mechanical and electromagnetic (EM) properties for that purpose. Design/methodology/approach The laminated composite plates were manufactured by using a vacuum infusion process. The EM tests were experimentally performed with a vector network analyzer to measure reflection, transmission and absorption ability of cotton fabric, carbon fabric and cotton–carbon fabric (side by side) composite plates between 3 and 18 GHz. The tensile and low-velocity impact tests were carried out to compare the mechanical properties of cotton fabric and carbon fabric composite plates. A scanning electron microscope was used for viewing the topographical features of fracture surfaces. Findings The cotton fabric composite plate exhibits low mechanical values, but it gives higher EM wave absorption values than the carbon fabric composite plate in certain frequency ranges. Comparing the EM absorption properties of the combination of cotton and carbon composites with those of the carbon composite alone, it appears that the cotton–carbon combination can be considered as a better absorber than the carbon composite in a frequency range from 12 to 18 GHz at Ku band. Originality/value This paper shows how cotton, which is a natural and easily supplied low-cost raw material, can be evaluated as a RAM.

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Section: Introductionmentioning

confidence: 99%

Investigation of cotton fabric composites as a natural radar-absorbing material

Ayan

Yapıcı

Karaaslan

et al. 2020

AEAT

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“…Carbon fibre/epoxy resin composite has the advantages of an enhanced stiffness to weight ratio and ease of processing. As such, it has been widely used in the aerospace, automotive, construction and marine industries (Cho et al 2008;Kim et al 2012;Li et al 2018). Recently, researchers at the National Museum of Denmark used carbon fibre/epoxy composites in conjunction with self-sealing bags to package underwater organic artefacts (Petriaggi et al 2014;SASMAP Project).…”

Section: Introductionmentioning

confidence: 99%

Temporary consolidation and packaging of fragile cultural relics at underwater archaeological sites to maintain their original state during extraction

et al. 2020

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The flexible sponge/epoxy composite can wrap underwater artefacts in any shape and forms a protective shell after curing, thus effectively wrapping and reinforcing the artefacts. However, the hydroscopicity of the sponge itself limits the underwater application of the sponge/epoxy composite. In this study, a novel polyurethane sponge was prepared by modified with super‐hydrophobic multi‐wall carbon nanotubes (SH‐MWCNTs@PU sponge). Compared with the pristine PU sponge, the water‐contact angle on the surface of SH‐MWCNTs@PU sponges increased from 103.3 ± 1.82 to 152.6 ± 1.54o, and oily epoxy resin was able to cover the surface completely. The study shows that when SH‐MWCNTs@PU sponges/epoxy resin composite material is used underwater, it prevents both water from entering the sponge and also the inside epoxy resin from overflowing into the water. Moreover, the composite materials have excellent toughness after reinforcement under water (flexural strength = 3.56 MPa) and the soft sponges can be moulded to wrap any type of underwater artefacts. In the laboratory, when taking a broken, three‐dimensional blue‐and‐white porcelain pot as a research subject, the entire retrieval process—temporary stabilization, packaging, extraction and reinforcement material removal—was simulated to evaluate systematically all the technological aspects of safely excavating fragile underwater relics.

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“…They have the ability to penetrate deep into low loss dielectrics and hence are suitable for inspection of electrically insulated low loss composites that are replacing metals in many applications [7]. In addition to this, a microwave NDE system offers various advantages over other existing NDE techniques such as non-contact, no requirement for couplants, relatively low cost, and one-sided scanning [8].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Study of a Metamaterial Lens for Nondestructive Evaluation of Composites

Datta

Shi

Mukherjee

et al. 2020

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems

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Composites are being increasingly used in various industries due to their lower cost and superior mechanical properties over traditional materials. They are nevertheless vulnerable to various defects during manufacturing or usage which can cause failure of critical engineering structures. Hence, there is a growing need for nondestructive evaluation (NDE) of composites to detect such defective structures and avoid significant loss and damages. Microwave NDE has several advantages over other existing NDE techniques for detecting defects or faults in non-conducting composites or dielectrics. One of the primary benefits of microwaves is large probe-standoff distances which allow for rapid scan times. However, the resolution of such far-field microwave sensors is diffraction limited. Metamaterial-based lens, also known as “superlens,” can achieve resolution beyond the diffraction limits due to its unique electromagnetic (EM) properties. This contribution focuses on the physical design of a metamaterial lens. The theory underlying the design of a metamaterial lens is presented followed by simulation and experimental results. This paper also investigates the feasibility of using the metamaterial lens for improving the resolution of microwave imaging in NDE of composites.

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Principles and Applications of Microwave Testing for Woven and Non-Woven Carbon Fibre-Reinforced Polymer Composites: a Topical Review

Cited by 41 publications

References 51 publications

Investigation of cotton fabric composites as a natural radar-absorbing material

Investigation of cotton fabric composites as a natural radar-absorbing material

Temporary consolidation and packaging of fragile cultural relics at underwater archaeological sites to maintain their original state during extraction

Model-Based Study of a Metamaterial Lens for Nondestructive Evaluation of Composites

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