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Elastic Wave Propagation for Condition Assessment of Steel Bar Embedded in Mortar

References Beard M.D. and Lowe M.J.S. (2003): Non-destructive testing of rock bolts using ultrasonic guided waves. - International Journal of Rock Mechanics and Mining Sciences, vol.40, pp.527-536. Chróścielewski, Rucka M., Wilde K. and Witkowski W. (2012): Diagnostics of concrete beams during bending process using elastic wave propagation (in Polish). - Scientific Letters of Rzeszow University of Technology, No.283, pp.349-356. Gołaski L., Goszczyńska B., Świt G. and Trąmpczyński W. (2012): System for the

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Application Of Guided Wave Propagation In Diagnostics Of Steel Bridge Components

Research 104, 81–90, 2015 5. M. Piekarczyk, R. Grec, Application of adhesive bonding in steel and aluminium structures, Archives of Civil Engineering, 58, 309–329, 2012 6. M. Rucka, Wave Propagation in Structures. Modelling, Experimental Studies and Application to Damage Detection, Wydawnictwo Politechniki Gdańskiej, Gdańsk 2011 7. M. Rucka, Modelling of in-plane wave propagation in a plate using spectral element method and Kane-Mindlin theory with application to damage detection. Archive of Applied Mechanics 81, 1877–1888, 2011 8. M. Rucka, W

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Damage Detection of A T-Shaped Panel by Wave Propagation Analysis in the Plane Stress / Wykrywanie Uszkodzen W Tarczy Typu T Z Uzyciem Analizy Propagacji Fal W Płaskim Stanie Naprezenia

References 1. J.F. Doyle, Wave propagation in structures: spectral analysis using fast discrete Fourier transforms (second ed.). Springer-Verlag, New York 1997. 2. S. Gopalakrishnan, A. Chakraborty, D.R. Mahapatra, Spectral finite element method: wave propagation, diagnostics and control in anisotropic and inhomogeneous structures. Springer-Verlag, London 2008. 3. D.S. Kumar, D.R. Mahapatra, S. Gopalakrishnan, A spectral finite element for wave propagation and structural diagnostic analysis of composite beam

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Temperature dependence of sound wave propagation in as a diagnostic tool for healthy and rotten black alder (Alnus glutinosa (L.) Gaertn). trees trunks

Abstract

The aim of this study was to determine how thermal conditions affect the speed of sound wave propagation, in trunks of living alder Alnus glutinosa (L.) Gaertn. trees. This method in practiced when diagnosing the presence of intern.al decay in standing trees. Field work was carried out four times at different temperatures (+13°C, +3°C, -7°C and -16°C) using an lmpulse Hammer. There was a significant correlation between the thermal conditions and the speed of sound wave propagation. Therefore, temperature must be taken into account to correctly diagnose tree health and timber quality.

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A Numerical and Experimental Aproach of Stress Waves Propagation in Short Tronconical Bars Under Axial Impact

References [1] Brillhart, L.V., and Dally, J. W. A Dynamic Photoelastic Investigation of Stress-wave Propagation in Cones,. Experimental Mechanics, 1968, pp.145-153. [2] Iliescu, N., The Study of Stress Wave Propagation in a Tronconical Bar by Dynamic Photoelasticity, Symposium on Experimental techniques in Applied Mechanics, Bucharest, 1-3 November 1972. [3] Kenner, V. H., and Goldsmith, W., Elastic waves in Truncated Cones, Experimental Mechanics, 8, 1968. [4] Landon, I. W. and Quinney, I

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MODELLING OF ACOUSTIC EMISSION SOURCE AND WAVE RESPONSE IN LAYERED MATERIALS

-361. [31] Backus, G. E., M. Mulcahy. Moment Tensors and Other Phenomenological Descriptions of Seismic Sources - II. Discontinuous Displacements. Geophys. J. Roy. Astron. Soc., 47 (1976), 301-329. [32] Kennett, B. L. N. Seismic Wave Propagation in Stratified Elastic Media, Cam- bridge University Press, 1983. [33] Hamstad, M. A., A. O. Gallagher, J. Gary. Effects of Lateral Plate Dimen- sions on Acoustic Emission Signals from Dipole Sources. J. Acoustic Emission, 19 (2001), 258-274. [34] Zhang, R., A. Alamin. Synthesis of

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Application of Energetic BEM to 2D Elastodynamic Soft Scattering Problems

. 1978, 2018. 8. H. Antes, A boundary element procedure for transient wave propagations in two-dimensional isotropic elastic media, Finite Elements Analysis and Design , vol. 1, pp. 313–321, 1985. 9. D. Cole, D. Kosloff, and J. Minster, A numerical boundary integral equation method for elastodynamics, Bulletin of the Seismological Society of America , vol. 68, pp. 1331–1357, 1978. 10. G. Maier, M. Diligenti, and A. Carini, A variational approch to boundary element method elasto-dynamic analysis and extension to multidomain problems, Computer

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Energetic BEM for the numerical analysis of 2D Dirichlet damped wave propagation exterior problems

En- gineering. McGraw-Hill, U.K. Ltd., 1981. 6. A. Aimi, M. Diligenti, C. Guardasoni, and S. Panizzi, Energetic BEMFEM coupling for wave propagation in layered media, Commun. Appl. Ind. Math., vol. DOI: 10.1685/journal.caim.438, 2013. 7. A. Aimi, L. Desiderio, M. Diligenti, and C. Guardasoni, A numerical study of energetic BEM-FEM applied to wave propagation in 2D multidomains, Publications de l'Institut Mathématique - Beograd, vol. 96, no. 110, pp. 5-22, 2014. 8. A. Aimi, M. Diligenti, A. Frangi, and C. Guardasoni

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On Some Aspects of the Complex–Envelope Finite–Differences Simulation of Wave Propagation in One–Dimensional Case

Computer Simulation of the Wave Propagation using Finite Differences I., One-dimensional FDTD method, JEEEC 64 No. 4 (2013), 212-221. [5] ŠUMICHRAST, L’. : On Some Strategies for Computer Simulation of the Wave Propagation using Finite Differences II. Multi-Dimensional FDTD Method, J. Electrical Engineering 64 No. 6 (2013), 337-345. [6] CHANGNING MA-ZHIZHANG CHEN: Stability Analysis of the CE-FDTD Method, IEEE Microwave & Wireless Comp. Lett. 14 No. 5 (2004), 243

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Wave Coupling Analysis in the Elastic Waveguides of Quarter Wavelength Noise Absorbers

REFERENCES [1] S. Ziaran. Znizovanie kmitania a hluku v priemysle, Slovenska Technicka Univerzita v Bratislave, 2006 . ISBN 8022723665. [2] R. Klas, F. Pochyly. The modification of the mixed flow pump with respect to its stability. Journal of Mechanical Engineering – Strojnícky časopis 2011 (62), No. 2, 93 – 103. [3] G. E. Totten, V. J. De Negri. Handbook of Hydraulic Fluid Technology, 2 nd Edition, CRC Press, 2017 . ISBN 9781138077348. [4] T. Ichiyanagi, T. Kuribayashi, T. Nishiumi. Investigations on Wave Propagation of the

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