Sensitive imaging of an elastic nonlinear wave-scattering source in a solid
نویسندگان
چکیده
We have developed an imaging method for locating isolated nonlinear scattering source~s! in solids. It relies on extracting the nonlinear response of a solid by modulation of a high by a low-frequency wave, and employing moving-window, synchronous detection. The resulting image consists of nonlinear wave reflection profiles with remarkable sensitivity to an isolated elastic nonlinear source~s!. In creating the image, we can distinguish between a nonlinear scattering source and other wave scatterers in the material. The method should work equally well for imaging the relative nonlinearity of different regions within a volume. © 2002 American Institute of Physics. @DOI: 10.1063/1.1495081#
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