Abstract
Ultrasonic (UT) nondestructive evaluation (NDE) of fluid-immersed bulk or layered elastic materials is commonly carried out with a single or a pair of acoustic transducers used in pulse-echo or pitch-catch modes. Applications range from determining material properties to identifying interior and/or surface defects. Some of the configurations often encountered in UT-NDE, and that are considered in this paper, are depicted in Figure 1. These sketches show a transmitting transducer radiating a continuous or pulsed finite beam that excites interface or bulk waves within the elastic part. Acoustic energy radiated back by the elastic part into the fluid is collected by a receiving transducer which converts it into a voltage. Quantitative modeling of this class of experiments, even under assumptions of ideal conditions (e.g. homogeneous and isotropic layers and defect-free structures), is important for design optimization purposes and for understanding and interpreting the data acquired. It also provides a first step towards tackling non-ideal configurations. There is a large body of work that address this objective through various approaches (analytical, numerical, hybrid, etc); the reader is referred to References in this issue and in past issues of the Proceedings of this conference. This paper presents recent developments in the application of analytic methods to comprehensive and efficient modeling of the type of configurations depicted in Fig. 1. Comprehensive in the sense that the methodology used can account for 1) arbitrary three-dimensional (3D) diffraction and orientation of transmitting and receiving transducers; 2) interface and layering wave effects such as the excitation of surface and modal waves in the structures inspected.
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References
M. Garton, A. Turnbull, T. Gray, R. Roberts, and L. W. Schmerr, “An ultrasonic simulator for conducting parametric studies of inspected setups and flaw responses at the early design stage of components,” to appear in Review of Progress in QNDE, Vol. 16, eds D. O. Thompson and D. E. Chimenti, (Plenum Press, New York, 1996).
D. E. Chimenti, A. Safaeinili, and O. I. Obkis, “Material characterization of gas- or fluid-coupled plates using leaky wave modes,” to appear in Review of Progress in QNDE, Vol. 16, eds D. O. Thompson and D. E. Chimenti, (Plenum Press, New York, 1996).
S. Zeroug, F. E. Stanke, and R. Burridge, “A complex-transducer-point model for emitting and receiving ultrasonic tranducers,” submitted for publication in Wave Motion (July 1995).
S. Zeroug “A spectral formula for acoustic transducer interaction with plane and cylindrical elastic configurations,” in preparation.
Leslie L. Foldy and Henry Primakoff, “A General theory of passive linear electroacoustic transducers and the electroacoustic reciprocity theorem. I,” J. Acoust. Soc. Am., Vol. 17, 109–120 (1945)
A. T. de Hoop, S. Zeroug and S. Kostek, “Transient analysis of the transmitting and receiving properties of a focused acoustic transducer with arbitrary rim,” Schlumberger-Doll Research, Research Note GEO-002 94–28b, unpublished, (available upon request from author).
R. B. Thompson, D.O. Thompson, and L. W. Schmerr, “Strategies for characterizing transducers and measurements systems,” to appear in Review of Progress in QNDE, Vol. 16, eds D. O. Thompson and D. E. Chimenti, (Plenum Press, New York, 1996).
S. Zeroug and L. B. Felsen, “Nonspecular reflection of two- and three-dimensional acoustic beams from fluid-immersed plane layered elastic structures,” Acoust. Soc. Am. Vol. 95, 3075–3089(1994).
S. Zeroug and L. B. Felsen, “Nonspecular reflection of two- and three-dimensional acoustic beams from fluid-immersed cylindrically layered elastic structures,” Acoust. Soc. Am. Vol. 98, 584–598 (1995).
G. R. Harris, “Review of transient field theory for a baffled planar piston,” J. Acoust. Soc. Am. Vol. 70, 10–20(1981).
M. J. S. Lowe, “Matrix Techniques for modeling ultrasonic waves in multilayered media,” IEEE Trans. Ultras., Ferroelect. and Freq. Cont. Vol. 42, 525–542, (1995).
H. L. Bertoni and T. Tamir, “Unified theory for Rayleigh-angle phenomena for acoustic beams at liquid-solid interfaces,” Appl. Phys. Vol. 2, 157–172 (1973).
D. E. Chimenti, J.-G. Zhang, Smaine Zeroug, and L. B. Felsen, “Interaction of acoustic beams with fluid-loaded elastic structures,” J. Acoust. Soc. Am., 95, 45–59 (1994).
H.-C. Choi and J. G. Harris, “Scattering of an ultrasonic beam from a curved interface”, Wave Motion Vol. 11, 383–406 (1989).
S. Zeroug “Pulsed beam excitation of leaky Rayleigh waves on shaped fluid-solid interfaces,” IEEE International Ultrasonics Symposium, 1091–1094 (1994).
a. S. Zeroug and F. E. Stanke “Ultrasonic pulsed beam interaction with a fluid-loaded elastic plate: Theory,” to be submitted to J. Acoust. Soc. Am.. b. “Ultrasonic pulsed beam interaction with a fluid-loaded elastic plate: Experimental Validation,” to be submitted to J. Acoust. Soc. Am..
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© 1996 Plenum Press, New York
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Zeroug, S. (1996). Efficient Modeling of Finite Acoustic Beam Excitation and Detection of Interface and Bulk Waves on Planar and Cylindrical Fluid-Solid Structures. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0383-1_36
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DOI: https://doi.org/10.1007/978-1-4613-0383-1_36
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