Nonlinear Acoustic Techniques for NDE of Materials with Variable Properties

Ravasoo, Arvi; Braunbrück, Andres

doi:10.1007/978-0-387-35851-2_27

Cited by 4 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The outcome, solutions (17) and (30) determine all the terms in series (5) and this enables us to describe analytically counter-propagation and interaction of one-…”

Section: Accepted Manuscript Is Obtained By Applying mentioning

confidence: 99%

See 1 more Smart Citation

Non-linear interaction of waves in prestressed material

Ravasoo

2007

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

Interaction of two counterpropagating ultrasonic waves in an inhomogeneously prestressed elastic material (a structural element) with quadratic non-linearity is studied theoretically by using the perturbative formalism. The analytical solution that describes wave-wave, wave-material and wave-prestress non-linear interaction is derived. This rather cumbersome solution is studied in the case of a harmonic boundary condition in the material (specimen) subjected to two-parametric inhomogeneous prestressed state. The model problems are solved and the influence of the prestress on the wave interaction is cleared up. Resulting oscillations on two parallel boundaries of the material are prestress sensitive. It is proposed to use boundary oscillation data for nondestructive characterization of inhomogeneous prestressed state.

show abstract

“…The outcome, solutions (17) and (30) determine all the terms in series (5) and this enables us to describe analytically counter-propagation and interaction of one-…”

Section: Accepted Manuscript Is Obtained By Applying mentioning

confidence: 99%

“…The amount of quantities which needs to be determined by the NDE of the inhomogeneous prestress field increases essentially [11][12][13][14]. Several methods that combine the acoustoelastic effect with other features of wave motion are proposed for this purpose in order to enhance the accuracy of NDE [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Non-linear interaction of waves in prestressed material

Ravasoo

2007

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

show abstract

“…The simplest method to gather data for nondestructive evaluation is to generate waves and measure their characteristics, such as velocities, amplitudes, frequencies, etc. [1,2,3,12,13].…”

Section: Introductionmentioning

confidence: 99%

Identification of Microstructured Materials by Phase and Group Velocities

Janno

Engelbrecht

2009

Mathematical Modelling and Analysis

View full text Add to dashboard Cite

show abstract

“…Traditional NDT methods measure these parameters by the conventional time-of-flight method and treat the recorded data on the level of the linear or linearized theories [5][6][7]. Numerous methods for the evaluation of mechanical properties of material, for the determination of flaws, inclusions, structural properties, prestress, etc are developed [8,9]. These methods break down in complicated cases, for example, when the material has multiparametric properties, physical inhomogeneity, inhomogeneous prestress, when the wave velocity is frequency dependent, etc.…”

Section: Introductionmentioning

confidence: 99%

Inverse problems related to a coupled system of microstructure

Janno¹,

Engelbrecht²

2008

Inverse Problems

View full text Add to dashboard Cite

Inverse problems to determine parameters of microstructured solids are studied. These parameters enter as coefficients to a coupled system of 1D wave propagation derived from the Mindlin model. Characteristics of harmonic waves and wave packets are used as data for the inverse problems. Uniqueness of the solution to the inverse problems in the case of normal dispersion is shown. In the case of anomalous dispersion the solution is double.

show abstract

Nonlinear Acoustic Techniques for NDE of Materials with Variable Properties

Cited by 4 publications

References 9 publications

Non-linear interaction of waves in prestressed material

Non-linear interaction of waves in prestressed material

Identification of Microstructured Materials by Phase and Group Velocities

Inverse problems related to a coupled system of microstructure

Contact Info

Product

Resources

About