Advances in Fracture Research: Honour and Plenary Lectures by Alberto Carpinteri, Yiu-Wing Mai, Robert O. Ritchie

By Alberto Carpinteri, Yiu-Wing Mai, Robert O. Ritchie

Biological fabrics are bottom-up designed platforms shaped from billions of years of ordinary evolution. within the lengthy process Darwinian festival for survival, nature has developed a major number of hierarchical and multifunctional platforms from nucleic acids, proteins, cells, tissues, organs, organisms, animal groups to ecological s- tems. Multilevel hierarchy a rule of nature. The complexities of biology provide a chance to check the fundamental rules of hierarchical and multifunctional s- tems layout, a subject matter of strength curiosity not just to biomedical and existence sciences, but additionally to nanosciences and nanotechnology. Systematic stories of the way hierarchical constructions in biology are on the topic of their capabilities and houses can result in greater realizing of the results of getting older, ailments and medication on tissues and organs, and should support constructing a scienti?c foundation for tissue engineering to enhance the normal of dwelling. while, such reviews can also offer assistance at the dev- opment of novel nanostructured hierarchical fabrics through a bottom-up strategy, i. e. by means of tailor-designing fabrics from atomic scale and up. presently we slightly have any theoretical foundation on how one can layout a hierarchical fabric to accomplish an element- ular set of macroscopic houses. the recent attempt aiming to appreciate the re- tionships among hierarchical buildings in biology and their mechanical in addition to different features and houses may supply not easy and worthwhile possibilities for mechanics within the twenty first century.

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Additional info for Advances in Fracture Research: Honour and Plenary Lectures Presented at the 11th International Conference on Fracture (ICF11), Held in Turin, Italy, on March 20–25, 2005

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Mandelbrot on the complexity system science. I sincerely hope that ICF11 will make outstanding contribution to the fracture science and engineering. 4. 1. Strength and fracture as complexity system science—a new paradigm Recently it has been revealed by many scientists (Tazaka 1998; Tsuda 1998; Kishida 2000) in various field of science and engineering, say, pure science, electronics, informatics, economics, medicine that complexity system science as a new paradigm for complex phenomena or complex function of a system consisting of many 42 T.

The author wishes to express hearty thanks to all these persons who served for their much efforts. Among many achievements of ICFX, the following program may be very important: At ICF4, 1977, Waterloo, Pannel Discussions on Fracture, Education and Society (Taplin 1977a), and on Fracture, Politics and Society (Taplin 1977b), respectively were held (Prof. D. M. R. Taplin, Chairman). The author would like to respect that such program was held about 28 years ago, because the author believes the matter, especially the latter matter is now being, and be much more in future very important problem.

1. : Wittmann and Hu (1991); Karihaloo (1995); Baˇzant and Planas (1998). Such an assumption (Barenblatt, 1962; Hillerborg, 1991) is conceptually and mathematically similar to modelling of inelastic behaviour of beams and frames by the softening plastic hinge notion (Maier, 1968; Bolzon and Corigliano, 1997a; Jirasek and Baˇzant, 2001; Cocchetti and Maier, 2003). For overall analyses focusing on fracture of concrete dams, mode I often turns out to be reasonable even in the absence of clear motivations such as symmetry.

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