Mechanical behavior of aeronautical composites containing self-healing microcapsules

Polydoropoulou, Panagiota; Katsiropoulos, Ch.V.; Loukopoulos, Andreas; Pantelakis, Spiros

doi:10.1108/ijsi-12-2017-0075

Cited by 7 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it can be seen from Figure 21 that the curve for the model with a diameter of 1 μm reaches the highest failure load values, whereas that for the 10% volume content also reaches very high values. In contrast, the lowest load value and, consequently, the lowest ILSS were observed in the material with the highest microcapsule diameter (3 μm) and the material with the highest microcapsule volume content (26%), which is consistent with other studies (Polydoropoulou et al , 2018; Nassho and Sanada, 2020). Therefore, our results indicate that both the larger microcapsules and the numerically higher volume content inside the material are detrimental to its strength values, as a reduction of 14% was observed for the highest diameter value and of 10% for the highest microcapsule volume content tested.…”

Section: Resultssupporting

confidence: 91%

“…The reinforcement required for the second part of the simulation process was modeled as a plain weave of carbon fibers of the company Teijin and, in fact, the Toho Tenax-E HTA40/E13/3 K/200tex. The properties were collected from the product data sheets of the company, as well as MatWeb (Polydoropoulou et al , 2018). The material properties are listed on Table 1.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of the mechanical behavior of self-healing composite materials

Madia¹,

Τσερπές²,

Polydoropoulou³

et al. 2022

AEAT

Self Cite

View full text Add to dashboard Cite

Purpose The purpose of this study is the investigation of self-healing materials containing encapsulated healing agents embedded in a polymer matrix with dispersed catalysts. In recent years, the high performance and design flexibility of composite materials have led to their widespread use in the aeronautics, space, automotive and marine fields. Simultaneously, as the need for advanced material properties has increased, many studies have been conducted on multifunctional materials, focusing on different fields of their desired capabilities. Design/methodology/approach A multiscale model was developed to simulate the effect of microcapsules on the mechanical behavior of the polymer matrix. Furthermore, the effects of microcapsule diameter and microcapsule concentration on the mechanical behavior of the composite were studied. Digimat and Ansys software were used to simulate the self-healing composites. Findings There is a trade-off between the efficiency of the microcapsules and the degradation of the properties of the composite material. Originality/value The generated model simulated an encapsulated healing agent in a polymeric matrix.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Simulation of the mechanical behavior of self-healing composite materials

Madia¹,

Τσερπές²,

Polydoropoulou³

et al. 2022

AEAT

Self Cite

View full text Add to dashboard Cite

show abstract

“…The authors have already demonstrated through a numerical procedure based on finite elements how to describe the behavior of the single ply (Viscardi, Arena, Barra and Guadagno, 2016). Other authors (Polydoropoulou, Katsiropoulos, Loukopoulos and Pantelakis, 2017; Polydoropoulou et al , 2018) have worked to investigate the static performance of self-healing resin: so remarkable self-repairing efficiency (of almost 115 percent) was achieved for the filled material in the case of 90 percent preloading. Numerical simulations have demonstrated that micro-cracks developed during the testing as well as during the manufacturing process may have been filled by the polymerized healing agent.…”

Section: Self-healing Materialsmentioning

confidence: 99%

Multi-functional nanotechnology integration for aeronautical structures performance enhancement

Viscardi

Arena

Guadagno

et al. 2018

IJSI

View full text Add to dashboard Cite

Purpose The purpose of this paper is to evaluate the applicative potentiality of functional/self-responsive materials in aeronautics. In particular, the study aims to experimentally validate the enhancement of structural performances of carbon fibers samples in the presence of nanofillers, as multi-walled carbon nanontubes or microcapsules for the self-healing functionality. Design/methodology/approach The paper opted for a mechanical study. Experimental static and dynamic tests on “blank” and modified formulations were performed in order to estimate both strength and damping parameters. A cantilever beam test set-up has been proposed. As a parallel activity, a numerical FE approach has been introduced to assess the correct modeling of the system. Findings The paper provides practical and empirical insights about how self-responsive materials react to mechanical solicitations. It suggests that reinforcing a sample positively affects the samples properties since they, de facto, improve the global structural performance. This work highlights that the addition of carbon nanotubes strongly improves the mechanical properties with a simultaneous slight enhancement in the damping performance. Damping properties are, instead, strongly enhanced by the addition of self-healing components. A balanced combination of both fillers could be adopted to increase electrical conductivity and to improve global performance in damping and auto-repairing properties. Practical implications The paper includes implications for the use of lightweight composite materials in aeronautics. Originality/value This paper fulfills an identified need to study new lightweight self-responsive smart materials for aeronautical structural application.

show abstract

“…This kind of self-responsive resins can manifest a very interesting applicative potentiality. Recently, the authors have worked to investigate the static performance of aeronautical self-healing resin: a remarkable self-repairing efficiency was achieved in the case of 90 percent preloading (Polydoropoulou, Katsiropoulos, Loukopoulos and Pantelakis, 2017a, b).…”

Section: Introductionmentioning

confidence: 99%

Design of self-healing catalysts for aircraft application

Calabrese

Longo

Naddeo

et al. 2018

IJSI

View full text Add to dashboard Cite

Purpose The purpose of this paper is to highlight the relevant role of the stereochemistry of two Ruthenium catalysts on the self-healing efficiency of aeronautical resins. Design/methodology/approach Here, a very detailed evaluation on the stereochemistry of two new ruthenium catalysts evidences the crucial role of the spatial orientation of phenyl groups in the N-heterocyclic carbene ligands in determining the temperature range within the curing cycles is feasible without deactivating the self-healing mechanisms (ring-opening metathesis polymerization reactions) inside the thermosetting resin. The exceptional activity and thermal stability of the HG2MesPhSyn catalyst, with the syn orientation of phenyl groups, highlight the relevant potentiality and the future perspectives of this complex for the activation of the self-healing function in aeronautical resins. Findings The HG2MesPhSyn complex, with the syn orientation of the phenyl groups, is able to activate metathesis reactions within the highly reactive environment of the epoxy thermosetting resins, cured up to 180°C, while the other stereoisomer, with the anti-orientation of the phenyl groups, does not preserve its catalytic activity in these conditions. Originality/value In this paper, a comparison between the self-healing functionality of two catalytic systems has been performed, using metathesis tests and FTIR spectroscopy. In the field of the design of catalytic systems for self-healing structural materials, a very relevant result has been found: a slight difference in the molecular stereochemistry plays a key role in the development of self-healing materials for aeronautical and aerospace applications.

show abstract

Mechanical behavior of aeronautical composites containing self-healing microcapsules

Cited by 7 publications

References 30 publications

Simulation of the mechanical behavior of self-healing composite materials

Simulation of the mechanical behavior of self-healing composite materials

Multi-functional nanotechnology integration for aeronautical structures performance enhancement

Design of self-healing catalysts for aircraft application

Contact Info

Product

Resources

About