Abstract
The authors are currently doing fatigue tests, by using sonotrodes working at 20 kHz, and compression tests on solid samples of rock materials. The specimens are monitored by laser sources focused on spots of the external surface. The main purpose is to identify in the crystal lattice mechanical oscillations in a frequency range higher than the Acoustic Emission (kHz) and comprised between MHz and THz. Such vibrational modes in the THz regime will be the signature of developing anomalies in piezoelectric or piezomagnetic materials, such as neutron and/or alpha particle emissions, and compositional changes. Moreover, it is also known that laser current pulses should be effective in exciting vibrational modes in the high-frequency range in conductive samples.
A photodetector connected to an usual oscilloscope, measuring the intensity of reflected light, detects vibrations in the range from MHz up to few GHz. To reduce the limitations in the ability to acquire high frequency signals, additional experiments are planned exploiting the Raman effect. Through the scattered light spectrum analysis, capable of detecting radiation in the visible light field, it should be obtained information on the intermolecular interactions that during solicitations induce resonant vibrations in the field of THz.
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References
D.A. Lockner, J.D. Byerlee, V. Kuksenko, A. Ponomarev, A. Sidorin, Quasi static fault growth and shear fracture energy in granite. Nature 350, 39–42 (1991)
M. Ohtsu, The history and development of acoustic emission in concrete engineering. Mag. Concr. Res. 48, 321–330 (1996)
J.B. Rundle, D.L. Turcotte, R. Shcherbakov, W. Klein, C. Sammis, Statistical physics approach to understanding the multiscale dynamics of earthquake fault systems. Rev. Geophys. 41, 1019–1049 (2003)
G. Niccolini, A. Schiavi, P. Tarizzo, A. Carpinteri, G. Lacidogna, A. Manuello, Scaling in temporal occurrence of quasi-rigid-body vibration pulses due to macrofractures. Phys. Rev. E 82, 46115 (2010) (1-5)
A. Carpinteri, G. Lacidogna, Damage monitoring of an historical masonry building by the acoustic emission technique. Mater. Struct. 39, 161–167 (2006)
A. Carpinteri, G. Lacidogna, Structural monitoring and integrity assessment of medieval towers. J. Struct. Eng. (ASCE) 132, 1681–1690 (2006)
A. Carpinteri, G. Lacidogna, Damage evaluation of three masonry towers by acoustic emission. Eng. Struct. 29, 1569–1579 (2007)
A. Carpinteri, G. Lacidogna, G. Niccolini, Critical behaviour in concrete structures and damage localization by acoustic emission. Key Eng. Mater. 312, 305–310 (2006)
A. Carpinteri, G. Lacidogna, N. Pugno, Structural damage diagnosis and life-time assessment by acoustic emission monitoring. Eng. Fract. Mech. 74, 273–289 (2007)
G. Lacidogna, A. Carpinteri, A. Manuello, G. Durin, A. Schiavi, G. Niccolini, A. Agosto, Acoustic and electromagnetic emissions as precursor phenomena in failure processes. Strain 47(2), 144–152 (2010)
A. Carpinteri, G. Lacidogna, A. Manuello, A. Niccolini, A. Schiavi, A. Agosto, Mechanical and electromagnetic emissions related to stress-induced cracks. Exp. Tech. 36, 53–64 (2010)
A. Misra, Theoretical study of the fracture-induced magnetic effect in ferromagnetic materials. Phys. Lett. A 62, 234–236 (1977)
V. Frid, A. Rabinovitch, D. Bahat, Fracture induced electromagnetic radiation. J. Phys. D 36, 1620–1628 (2003)
A. Rabinovitch, V. Frid, D. Bahat, Surface oscillations. A possible source of fracture induced electromagnetic oscillations. Tectonophysics 431, 15–21 (2007)
V. Hadjicontis, C. Mavromatou, D. Nonos, Stress induced polarization currents and electromagnetic emission from rocks and ionic crystals, accompanying their deformation. Nat. Hazards Earth Syst. Sci. 4, 633–639 (2004)
J.W. Warwick, C. Stoker, T.R. Meyer, Radio emission associated with rock fracture: possible application to the great Chilean earthquake of May 22, 1960. J. Geophys. Res. 87, 2851–2859 (1982)
T. Nagao, Y. Enomoto, Y. Fujinawa et al., Electromagnetic anomalies associated with 1995 Kobe earthquake. J. Geodyn. 33, 401–411 (2002)
O. Borla, G. Lacidogna, E. Di Battista, G. Niccolini, A. Carpinteri, Multiparameter approach for seismic risk evaluation through environmental monitoring. Atti del 21 Congresso Nazionale di Meccanica Teorica ed Applicata (AIMETA) (Torino, Italy, 2013) CD-ROM
O. Borla, G. Lacidogna, E. Di Battista, G. Niccolini, A. Carpinteri, Electromagnetic emission as failure precursor phenomenon for seismic activity monitoring. Fracture, Fatigue, Failure, and Damage Evolution, Chap. 29, Vol. 5:221–229 (2014). Proc. of the 2014 Annual Conference on Experimental and Applied Mechanics
A. Carpinteri, F. Cardone, G. Lacidogna, Piezonuclear neutrons from brittle fracture: early results of mechanical compression tests. Strain 45, 332–339 (2009)
F. Cardone, A. Carpinteri, G. Lacidogna, Piezonuclear neutrons from fracturing of inert solids. Phys. Lett. A 373, 4158–4163 (2009)
A. Carpinteri, O. Borla, G. Lacidogna, A. Manuello, Neutron emissions in brittle rocks during compression tests: monotonic vs cyclic loading. Phys. Mesomech. 13, 268–274 (2010)
A. Carpinteri, G. Lacidogna, A. Manuello, O. Borla, Energy emissions from brittle fracture: neutron measurements and geological evidences of piezonuclear reactions. Strength Fract. Comp. 7, 13–31 (2011)
A. Carpinteri, G. Lacidogna, A. Manuello, O. Borla, Piezonuclear fission reactions from earthquakes and brittle rocks failure: evidence of neutron emission and non-radioactive product elements. Exp. Mech. 53, 345–365 (2013)
A. Widom, J. Swain, Y.N. Srivastava, Neutron production from the fracture of piezoelectric rocks. J. Phys. G: Nucl. Part. Phys. 40, 15006 (2013) (1-8)
A. Widom, J. Swain, Y.N. Srivastava, Photo-disintegration of the iron nucleus in fractured magnetite rocks with magnetostriction. Meccanica (2014) DOI:10.1007/s11012-014-0007-x
J.R. Ferraro, K. Nakamoto, C.W. Brown, Introductory Raman spectroscopy, 2nd edn. (Academic, Amsterdam, 2003)
P. Gillet, J. Badro, P. McMillan, A. Grzechnik, J. Schott, Thermodynamic properties and isotopic fractionation of calcite from vibrational spectroscopy of O-substituted calcite. Geochim. Cosmochim. Ac. 60, 3471–3485 (1996)
M.L. Frezzotti, F. Tecce, A. Casagli, Raman spectroscopy for fluid inclusion analysis. J. Geochem. Explor. 112, 1–20 (2012)
A. Carpinteri, R. Malvano, A. Manuello, G. Piana, Fundamental frequency evolution in slender beams subjected to imposed axial displacements. J. Sound Vib. 333, 2390–240 (2014)
A. Carpinteri, TeraHertz phonons and piezonuclear reactions from nano-scale mechanical instabilities. Chap. 1. In: “Acoustic, Electromagnetic, Neutron Emissions from Fracture and Earthquakes”, Springer (2015) (in print)
P.L. Hagelstein, D. Letts, D. Cravens, Terahertz difference frequency response of PdD in two-laser experiments. J. Cond. Mat. Nucl. Sci. 3, 59–76 (2010)
Acknowledgements
The authors are grateful to Dr Sandro Cammarano and Eng. Andrea Bassani of Politecnico di Torino, Department of Structural, Geotechnical and Building Engineering, for their needful cooperation in carrying out Raman and compression tests. Special thanks are also due to Prof. Piergiorgio Rossetti, Dr Roberto Cossio and Dr Simona Ferrando of Università di Torino, Department of Earth Sciences. The Micro-Raman data have been obtained with the equipment acquired by the Interdepartmental Center “G. Scansetti” of Università di Torino for Studies on Asbestos and Other Toxic Particulates, with a grant from Compagnia di San Paolo,Torino.
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Lacidogna, G., Invernizzi, S., Montrucchio, B., Borla, O., Carpinteri, A. (2016). Analysis of High-Frequency Vibrational Modes Through Laser Pulses. In: Bossuyt, S., Schajer, G., Carpinteri, A. (eds) Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 9. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-21765-9_13
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