Interlaminar fracture of structural fibre/epoxy composites integrating damage sensing and healing

Benazzo, F.; Rigamonti, Daniela; Bettini, Paolo; Sala, Giuseppe; Grande, Antonio Mattia

doi:10.1016/j.compositesb.2022.110137

Cited by 13 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These tests include double cantilever beam, 51 end notch flexure at three points, 58 end notch flexure at four points, 104 and so on. Benazzo et al 105 have carefully and comprehensively summarized the advantages and disadvantages of these methods as well as the conditions under which they can be applied. However, there is almost no standards method for characterizing the healing efficiency, which makes it difficult to conduct effective comparisons between the healing efficiencies obtained from different test methods.…”

Section: Intrinsic Self‐healing Compositesmentioning

confidence: 99%

Intrinsic and extrinsic self‐healing fiber‐reinforced polymer composites: A review

Wang,

Tang,

Chen

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

With their high specific modulus, high specific strength and designability, fiber‐reinforced polymer (FRP) composites have replaced or surpassed traditional metallic materials in a wide range of applications. However, the polymer matrix of commonly used FRP composites is usually a thermosetting polymer that is difficult to rework once formed, which implants a substantial challenge for the repair and recycling of composites. Self‐repair, as an emerging method of repairing polymer‐based materials, has the advantages of simplification, high efficiency and repeatability against traditional repair methods. Research on self‐healing polymer materials is developing rapidly and becoming more systematic. With the development of self‐healing polymer, polymer‐based composites with self‐healing capabilities are becoming possible. This paper reviews the current development of self‐healing polymers in recent years, with specific emphasis on their applications in FRP composites. According to the difference in healing mechanisms, the self‐healing polymer composites are split into two categories, intrinsic and extrinsic ones. The essential concepts and different types of intrinsic and extrinsic self‐healing composites are first introduced. Then, their pros and cons are discussed, respectively. Finally, the perspectives of intrinsic as well as extrinsic self‐healing FRP composites are put forward.Highlights Development of self‐healing fiber‐reinforced polymer composites. Extrinsic and intrinsic self‐healing fiber‐reinforced polymer composites. Pros and cons of self‐healing fiber‐reinforced polymer composites. Perspectives of self‐healing fiber‐reinforced polymer composites.

show abstract

Section: Intrinsic Self‐healing Compositesmentioning

confidence: 99%

Intrinsic and extrinsic self‐healing fiber‐reinforced polymer composites: A review

Wang,

Tang,

Chen

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Indeed, Luzuriaga et al [31] demonstrated that a higher presence of free amines decreases the relaxation time, the glass transition temperature (T g ), and the activation energy (E a ) of the disulfide exchange reactions, indicating a higher network mobility effect of the non-stoichiometric systems. Furthermore, Benazzo et al [32] performed a comparison of the self-healing performance of a DGEBA/AFD mixture in both stoichiometric and non-stoichiometric (20% of AFD excess) conditions via mechanical tests. The results showed a higher self-healing efficiency in the non-stoichiometric mixture (88.6%) compared to the stoichiometric system (50.2%).…”

Section: Introductionmentioning

confidence: 99%

Electromechanical Properties of Smart Vitrimers Reinforced with Carbon Nanotubes for SHM Applications

Gómez-Sánchez,

Sánchez-Romate,

Espadas

et al. 2024

Sensors

View full text Add to dashboard Cite

The Structural Health Monitoring (SHM) capabilities of a well-studied self-healing epoxy resin based on disulfide bonds, through the addition of carbon nanotubes (CNTs), are studied. Since these materials demonstrated, in recent works, a high dependency of the dynamic hardener content on the repair performance, this study aimed to analyze the effect of the vitrimeric chemistry on the electromechanical properties by studying different 2-aminophenyl disulfide (2-AFD) hardener and CNT contents. The electrical conductivity increases with both the CNT and AFD contents, in general. Moreover, an excess of AFD close to the stoichiometric ratio with a low CNT content improved the tensile strength by 45%, while higher AFD contents promoted its detriment by 41% due to a reduced crosslinking density. However, no significant difference in the mechanical properties was observed at a higher CNT content, regardless of the AFD ratio. The developed materials demonstrate a robust electromechanical response at quasi-static conditions. The sensitivity significantly increases at higher AFD ratios, from 0.69 to 2.22 for the 0.2 wt.%. CNT system, which is advantageous due to the enhanced repair performance of these vitrimeric materials with a higher hardener content. These results reveal the potential use of self-healing vitrimers as integrated SHM systems capable of detecting damages and self-repairing autonomously.

show abstract

In-situ monitoring of carbon fiber/epoxy composite with FBG sensors under curing and thermal cycling conditions

Huang,

Zhang,

et al. 2024

Composites Communications

View full text Add to dashboard Cite

Interlaminar fracture of structural fibre/epoxy composites integrating damage sensing and healing

Cited by 13 publications

References 32 publications

Intrinsic and extrinsic self‐healing fiber‐reinforced polymer composites: A review

Intrinsic and extrinsic self‐healing fiber‐reinforced polymer composites: A review

Electromechanical Properties of Smart Vitrimers Reinforced with Carbon Nanotubes for SHM Applications

In-situ monitoring of carbon fiber/epoxy composite with FBG sensors under curing and thermal cycling conditions

Contact Info

Product

Resources

About