Self-healing behaviour in man-made engineering materials: bioinspired but taking into account their intrinsic character

Zwaag, Sybrand van der; Dijk, Niels van; Jonkers, H.M.; Mookhoek, Steven D.; Sloof, W.G.

doi:10.1098/rsta.2009.0020

Cited by 108 publications

(67 citation statements)

References 38 publications

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“…Self-healing materials and surfaces [22][23][24]30,53,[56][57] Damage prevention A mechanism to heal voids as they appear is embedded into material (e.g., nucleation of a solute at void points in supersaturated solid solution).…”

Section: Future Directionsmentioning

confidence: 99%

Entropy in Tribology: in the Search for Applications

Nosonovsky

2010

Entropy

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Abstract:The paper discusses the concept of entropy as applied to friction and wear. Friction and wear are classical examples of irreversible dissipative processes, and it is widely recognized that entropy generation is their important quantitative measure. On the other hand, the use of thermodynamic methods in tribology remains controversial and questions about the practical usefulness of these methods are often asked. A significant part of entropic tribological research was conducted in Russia since the 1970s. Surprisingly, many of these studies are not available in English and still not well known in the West. The paper reviews various views on the role of entropy and self-organization in tribology and it discusses modern approaches to wear and friction, which use the thermodynamic entropic method as well as the application of the mathematical concept of entropy to the dynamic friction effects (e.g., the running-in transient process, stick-slip motion, etc.) and a possible connection between the thermodynamic and information approach. The paper also discusses non-equilibrium thermodynamic approach to friction, wear, and self-healing. In general, the objective of this paper is to answer the frequently asked question -is there any practical application of the thermodynamics in the study of friction and wear?‖ and to show that the thermodynamic methods have potential for both fundamental study of friction and wear and for the development of new (e.g., self-lubricating) materials.

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Section: Future Directionsmentioning

confidence: 99%

Entropy in Tribology: in the Search for Applications

Nosonovsky

2010

Entropy

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“…The open volume defects at the interfaces was found to be immobilised by the formation of BN and Cu precipitates at the crack opening [33][34][35].…”

Section: Precipitation Reactionsmentioning

confidence: 99%

Routes and mechanisms towards self healing behaviour in engineering materials

Zwaag¹

2010

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. Modern man-made engineering materials demonstrate excellent mechanical properties, but the lack of the ability of self healing, i.e. the ability to remove or neutralise microcracks without (much) intentional human interaction, which is typical for most materials as encountered in nature. Such self-healing behaviour requires the presence of mobile species, atoms or molecules, in an otherwise solid material. Upon the occurrence of damage the mobile species directionally flow towards the damage location and once arrived there restores the contact between the two crack faces and the mechanical integrity. This directional flow may occur during regular use conditions (self healing behaviour) or conditions during which the mobility is temporarily increased (stimulated self healing).In this manuscript a brief overview of the routes and mechanisms which have been used to create self healing behaviour in the principal classes of engineering materials: polymers, metals, ceramics, concrete, asphalt, fibre composites, is presented.

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“…11). Using differential scanning calorimetry and solid state 13 C NMR spectroscopy healing was observed to predominately result from the solid state DA reaction, and this healing was repeatable for multiple damage events. 174 Later reports showed that full recovery of virgin mechanical properties could be achieved for repeated damage events when fracture surfaces were accurately aligned and clamped with 0?35 MPa of pressure during healing.…”

Section: Thermally Reversible Self-healingmentioning

confidence: 99%

“…thermoplastic polymers, thermoset polymers, composites, metals, etc. ), 12,13 the physical phase of the healing additive (solid v. liquid), 14 the external stimuli required to initiate healing event, 15 and the intrinsic or extrinsic nature of the healing. 16 This ambiguity, which is a direct consequence of the multidisciplinary nature of the field, will likely not be resolved here, but given the spirit of autonomic healing, we organise the different self-healing techniques with the mechanism by which the healing occurs.…”

Section: Introductionmentioning

confidence: 99%

Self-healing polymers and composites

Mauldin¹,

Kessler²

2010

International Materials Reviews

235

136

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Inspired by the unique and efficient wound healing processes in biological systems, several approaches to develop synthetic polymers that can repair themselves with complete, or nearly complete, autonomy have recently been developed. This review aims to survey the rapidly expanding field of self-healing polymers by reviewing the major successful autonomic repairing mechanisms developed over the last decade. Additionally, we discuss several issues related to transferring these self-healing technologies from the laboratory to real applications, such as virgin polymer property changes as a result of the added healing functionality, healing in thin films v. bulk polymers, and healing in the presence of structural reinforcements.

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Self-healing behaviour in man-made engineering materials: bioinspired but taking into account their intrinsic character

Cited by 108 publications

References 38 publications

Entropy in Tribology: in the Search for Applications

Entropy in Tribology: in the Search for Applications

Routes and mechanisms towards self healing behaviour in engineering materials

Self-healing polymers and composites

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