Acoustic, Electromagnetic, Neutron Emissions from Fracture by Alberto Carpinteri, Giuseppe Lacidogna, Amedeo Manuello

By Alberto Carpinteri, Giuseppe Lacidogna, Amedeo Manuello

This publication provides the suitable outcomes of lately came across and interdisciplinary phenomena, prompted by way of neighborhood mechanical instabilities. specifically, it seems at emissions from nano-scale mechanical instabilities similar to fracture, turbulence, buckling and cavitation, focussing on vibrations on the TeraHertz frequency and Piezonuclear reactions. destiny functions for this paintings may well contain earthquake precursors, weather switch, power construction and mobile biology.

A sequence of fracture experiments on typical rocks demonstrates that the TeraHertz vibrations may be able to result in fission reactions on medium weight parts followed via neutron emissions. an analogous phenomenon seems to have happened in numerous diversified events, quite within the chemical evolution of the Earth and sun method, via seismicity (rocky planets) and storms (gaseous planets). because the authors discover, those phenomena may also clarify puzzles regarding the background of our planet, just like the ocean formation or the primordial carbon toxins, in addition to medical mysteries, just like the so-called “cold nuclear fusion” or the right kind radio-carbon courting of natural fabrics, comparable to the Turin Shroud. In biology, Piezonuclear reactions may possibly clarify the mechanism that governs the so-called "sodium-potassium pump" and extra more often than not, the metabolic processes.

Scientists engaged in seismology, geophysics, geochemistry, climatology, planetology, condensed topic physics and b

iology, in addition to these keen on theoretical and utilized mechanics, will all savour the leading edge paintings awarded right here in a holistic way.

Show description

Read or Download Acoustic, Electromagnetic, Neutron Emissions from Fracture and Earthquakes PDF

Best geophysics books

Boundary Element Methods for Soil-Structure Interaction

The booklet offers an authoritative consultant to the literature at the topic lined and is anticipated to be a useful software for working towards engineers, scholars and students within the fields of Structural, Geotechnical and Earthquake Engineering. Engineers and scholars could conveniently find the fabrics or equipment to be had for the answer in their specific challenge whereas students could become aware of equipment formerly now not thought of for the actual program being thought of.

Shallow Water Hydrodynamics: Mathematical Theory and Numerical Solution for a Two-dimensional System of Shallow Water Equations

Inside this monograph a complete and systematic wisdom on shallow-water hydrodynamics is gifted. A two-dimensional process of shallow-water equations is analyzed, together with the mathematical and mechanical backgrounds, the houses of the procedure and its resolution. additionally featured is a brand new mathematical simulation of shallow-water flows through compressible aircraft flows of a unique digital ideal fuel, in addition to sensible algorithms akin to FDM, FEM, and FVM.

Monitoring the Comprehensive Nuclear-Test-Ban Treaty: Hydroacoustics

In September 1996, the United countries common meeting followed the great Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions all over the world, in all environments. The treaty demands a world verification procedure, together with a community of 321 tracking stations dispensed around the world, an information communications community, a global information centre (IDC), and on-site inspections, to ensure compliance.

The Analysis of Diffuse Triple Junction Zones in Plate Tectonics and the Pirate Model of Western Caribbean Tectonics

Sleek researchers in plate tectonics could be fascinated about the research of allotted deformation throughout diffuse plate barriers and triple junction zones. This publication extends vintage equipment of kinematic research first built within the Nineteen Sixties to the extra normal situations of diffuse deformation zones among plates.

Extra info for Acoustic, Electromagnetic, Neutron Emissions from Fracture and Earthquakes

Example text

As far as the intermediate frequency (200 Hz) is concerned, the cylindrical specimens have been subjected to compression-compression fatigue tests by 44 A. Carpinteri et al. means of an electromechanical Amsler Vibrofore 10 HPF 422 (see Fig. 2b). This equipment allows to apply fatigue loading with a frequency range between 100 and 260 Hz, a mean load up to 50 kN, and an alternate load up to 50 kN. The machine working conditions are related to resonance conditions of the system which is composed by two masses (a seismic huge mass and the specimen mass) and two springs (a huge machine spring element and the specimen stiffness) disposed in series (see Fig.

10, it is possible to observe that the maximum neutron emission level starts to decrease from monotonic loading condition, in which the neutron emission seems to be maximized for all the materials, down to the ultrasonic range (20 kHz), in which the neutron emissions for Luserna stone and basalt is only some times greater than the background level detected before the experiments. Particular consideration has to be given to the case of fatigue loading at the intermediate frequency (200 Hz).

It can be verified that the maximum temperature is measured in correspondence of the line which lies in the tangent plane which is parallel to the 4 Frequency-Dependent Neutron Emissions During Fatigue Tests on Iron-Rich. . 45 Fig. 3 NEC TH7100WX infrared thermo camera used for the temperature monitoring of the external surface of the specimen (a). detector 24,7 24,3 23,9 23,5 °C Fig. 4 Thermal contour of basalt specimen during compression fatigue loading. The specimen, the neutron dosimeters and the machine clamps are indicated.

Download PDF sample

Rated 4.62 of 5 – based on 32 votes