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- Folker H. Wittmann, Z. P. Baztnt, +26 authors Bernhard Trunk

A review of the basic theories of scaling in solid mechanics is presented. The problem of scaling is approached through dimensional analysis, laws of thermodynamics and asymptotic matching. Definitive conclusions on the relative importance of various sources of size effect (energy release, Weibull statistics, and crack fractality) tlrc drawn. The size… (More)

- Caterina Guiot, Pier Paolo Delsanto, Alberto Carpinteri, Nicola Pugno, Yuri Mansury, Thomas S Deisboeck
- Journal of theoretical biology
- 2006

We have previously reported that a universal growth law, as proposed by West and collaborators for all living organisms, appears to be able to describe also the growth of tumors in vivo after an initial exponential growth phase. In contrast to the assumption of a fixed power exponent p (assumed by West et al. to be equal to 3/4), we propose in this paper a… (More)

- Alberto Carpinteri, Nicola Pugno
- Nature materials
- 2005

One of the largest controversial issues of the materials science community is the interpretation of scaling laws on material strength. In spite of the prevailing view, which considers mechanics as the real cause of such effects, here, we propose a different argument, purely based on geometry. Thus, as happened for relativity, geometry could again hold an… (More)

- A. Carpinteri
- 2006

Many ancient masonry towers are present in Italian territory. In some cases these structures are at risk on account of the intensity of the stresses they are subjected to due to the high level of regional seismicity. In order to preserve this inestimable cultural heritage, a sound safety assessment should take into account the evolution of damage phenomena.… (More)

- Simone Puzzi, Alberto Carpinteri
- 2008

The present paper proposes a double-multiplicative penalty strategy for constrained optimization by means of genetic algorithms (GAs). The aim of this research is to provide a simple and efficient way of handling constrained optimization problems in the GA framework without the need for tuning the values of penalty factors for any given optimization… (More)

- G Niccolini, A Carpinteri, G Lacidogna, A Manuello
- Physical review letters
- 2011

We perform a comparative statistical analysis between the acoustic-emission time series from the ancient Greek Athena temple in Syracuse and the sequence of nearby earthquakes. We find an apparent association between acoustic-emission bursts and the earthquake occurrence. The waiting-time distributions for acoustic-emission and earthquake time series are… (More)

- Nicola M Pugno, Federico Bosia, Alberto Carpinteri
- Small
- 2008

Thousands of multiscale stochastic simulations are carried out in order to perform the first in-silico tensile tests of carbon nanotube (CNT)-based macroscopic cables with varying length. The longest treated cable is the space-elevator megacable but more realistic shorter cables are also considered in this bottom-up investigation. Different sizes, shapes,… (More)

- G Niccolini, F Bosia, A Carpinteri, G Lacidogna, A Manuello, N Pugno
- Physical review. E, Statistical, nonlinear, and…
- 2009

Experimental and numerical results are presented for a fracture experiment carried out on a fiber-reinforced element under flexural loading, and a statistical analysis is performed for acoustic emission waiting-time distributions. By an optimization procedure, a recently proposed scaling law describing these distributions for different event magnitude… (More)

- G Niccolini, A Schiavi, P Tarizzo, A Carpinteri, G Lacidogna, A Manuello
- Physical review. E, Statistical, nonlinear, and…
- 2010

We subjected the time series of quasi-rigid-body vibration pulses (elastic emissions) from laboratory fracture carried out by a piezoelectric accelerometer on concrete and rock specimens under uniaxial compression to statistical analysis. In both cases, we find that the waiting-time distribution can be described by a scaling law extending over several… (More)

- Nicola Pugno, Federico Bosia, Antonio S Gliozzi, Pier Paolo Delsanto, Alberto Carpinteri
- Physical review. E, Statistical, nonlinear, and…
- 2008

The problem of characterizing damage evolution in a generic material is addressed with the aim of tracing it back to existing growth models in other fields of research. Based on energetic considerations, a system evolution equation is derived for a generic damage indicator describing a material system subjected to an increasing external stress. The latter… (More)