Download Biomimetics in Materials Science: Self-Healing, by Michael Nosonovsky, Pradeep K. Rohatgi PDF

By Michael Nosonovsky, Pradeep K. Rohatgi

Biomimetics in fabrics Science offers a entire theoretical and functional evaluate of biomimetic fabrics with self-healing, self-lubricating and self-cleaning homes. those 3 subject matters are heavily comparable and represent quickly constructing parts of analysis. the sector of self-healing fabrics calls for a brand new conceptual realizing of this biomimetic expertise, that's not like conventional engineering methods akin to put on and fatigue. Biomimetics in fabrics Science is the 1st monograph to be dedicated to those fabrics. a brand new theoretical framework for those tactics is gifted in keeping with the idea that of multi-scale constitution of entropy and non-equilibrium thermodynamics, including a close evaluate of the on hand expertise. The latter comprises experimental, modeling, and simulation effects acquired on self-healing/lubricating/cleaning fabrics for the reason that their emergence some time past decade.

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Extra resources for Biomimetics in Materials Science: Self-Healing, Self-Lubricating, and Self-Cleaning Materials

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However, biological mechanisms of healing are very complex and often involve many factors acting in parallel. There is a growing understanding in the community of materials scientists who work on the development of self-healing materials that biological mechanisms of healing cannot be directly borrowed for artificial materials. For instance, the review by Van der Zwaag (2009) with the symptomatic title “Self-healing behavior in man-made engineering materials: bioinspired but taking into account their intrinsic character” ends with the conclusion “while Nature has shown an extreme diversity in microstructures and microstructural systems, and, subsequently, has shown a wide diversity of healing mechanisms, it is unwise to try to copy these healing mechanisms in man-made engineering materials in a direct manner.

Inside microcapsules that rupture during wear, and release the lubricant. Surface microtexturing provides holes and dimples that can serve as reservoirs for lubricant is another method of providing self-lubrication. , human joints), and that the term “self-lubrication” is used also in geophysics where it refers to the abnormally low friction between tectonic plates that is observed during some earthquakes. 1 Frictional Dynamic Effects Another type of self-organizing behavior during friction is related to dynamic frictional effects, such as vibrations and waves induced by frictional sliding.

The driving mechanism for the diffusion is the excess surface energy of the microscopic voids and cracks that serve as the nucleation centers of the precipitate that plays the role of the healing agent by filling up the voids. As a result, the newly formed void is sealed before it grows and thus minimizes the creep and fatigue. Second, Olson (1997), Manuel (2007), and co-workers (Bender and Olson 2008) used another approach: reinforcement of an alloy matrix with microfibers or wires made of a shape-memory alloy (SMA), such as nitinol (NiTi).

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