TY - JOUR
T1 - Propagación de ondas de Rayleigh en medios con grietas
AU - Olivera-Villaseñor, E.
AU - Núñez-Farfán, J.
AU - Flores-Guzmán, N.
AU - Carbajal-Romero, M.
AU - Rodríguez-Castellanos, A.
AU - Sánchez-Sesma, F. J.
PY - 2014
Y1 - 2014
N2 - This work is focused on the finding of numerical results for detection and characterization of sub-surface cracks in solids under the incidence of Rayleigh's elastic waves. The results are obtained from boundary integral equations, which belong to the field of dynamics of elasticity. Once applied the boundary conditions, a system of Fredholm's integral equations of second kind and zero order is obtained, which is solved using Gaussian elimination. The method that is used for the solution of such integral equations is known as the Indirect Boundary Element Method, which can be seen as a derivation of the Somigliana's classic theorem. On the basis of the analysis made in the frequency domain, resonance peaks emerge and allow us to infer the presence of cracks through the spectral ratios. Several models of cracked media were analyzed, where analyses reveal the great utility that displays the use of spectral ratios to identify cracks. We studied the effects of orientation and location of cracks. The results show good agreement with the previously published.
AB - This work is focused on the finding of numerical results for detection and characterization of sub-surface cracks in solids under the incidence of Rayleigh's elastic waves. The results are obtained from boundary integral equations, which belong to the field of dynamics of elasticity. Once applied the boundary conditions, a system of Fredholm's integral equations of second kind and zero order is obtained, which is solved using Gaussian elimination. The method that is used for the solution of such integral equations is known as the Indirect Boundary Element Method, which can be seen as a derivation of the Somigliana's classic theorem. On the basis of the analysis made in the frequency domain, resonance peaks emerge and allow us to infer the presence of cracks through the spectral ratios. Several models of cracked media were analyzed, where analyses reveal the great utility that displays the use of spectral ratios to identify cracks. We studied the effects of orientation and location of cracks. The results show good agreement with the previously published.
KW - Boundary element method
KW - Crack detection
KW - Green's functions
KW - Rayleigh's waves
KW - Resonance peaks
KW - Somigliana's theorem
KW - Spectral ratio
UR - http://www.scopus.com/inward/record.url?scp=84898806353&partnerID=8YFLogxK
U2 - 10.1016/j.rimni.2012.08.005
DO - 10.1016/j.rimni.2012.08.005
M3 - Artículo
SN - 0213-1315
VL - 30
SP - 35
EP - 41
JO - Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria
JF - Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria
IS - 1
ER -