. "Nonlinear spectroscopy, elastic wave, concrete, structure integrity, frequency spectrum"@en . . . . "26110" . "380447" . "The paper deals with nonlinear interaction between elastic wave and structural defects in concrete materials. In the first stage of the experiment, we have examined whether or not the inhomogeneous concrete material gives rise to parasitic components being able to generate non-linear phenomena in the signal transmission. In the second stage were measured the specimens with structure damaged by the pressing machine and a correlation between the response frequency spectrum and the specimen structure deterioration was looked for." . . "11" . . . "4"^^ . . "4"^^ . "[FC51A74F88EB]" . . . . . "Manychov\u00E1, Monika" . . "6"^^ . . "The paper deals with nonlinear interaction between elastic wave and structural defects in concrete materials. In the first stage of the experiment, we have examined whether or not the inhomogeneous concrete material gives rise to parasitic components being able to generate non-linear phenomena in the signal transmission. In the second stage were measured the specimens with structure damaged by the pressing machine and a correlation between the response frequency spectrum and the specimen structure deterioration was looked for."@en . "The e-Journal of Nondestructive Testing" . . "Ko\u0159ensk\u00E1, Marta" . "RIV/00216305:26110/08:PU76600" . "Monitoring of Concrete Components Structure Condition Using a Nonlinear Ultrasonic Spectroscopy"@en . "RIV/00216305:26110/08:PU76600!RIV10-MSM-26110___" . "Monitoring of Concrete Components Structure Condition Using a Nonlinear Ultrasonic Spectroscopy"@en . "DE - Spolkov\u00E1 republika N\u011Bmecko" . . "P(GA103/06/1711), Z(MSM0021630511)" . . "13" . "1435-4934" . . "Monitoring of Concrete Components Structure Condition Using a Nonlinear Ultrasonic Spectroscopy" . "Pl\u0161kov\u00E1, Iveta" . . . . "Monitoring of Concrete Components Structure Condition Using a Nonlinear Ultrasonic Spectroscopy" . "Matys\u00EDk, Michal" . .