Nondestructive Identification of Inhomogeneous Residual Stress State in Deformable Bodies on the Basis of the Acoustic Sounding Method

Vladimir Vladimirovich Dudarev; Rostislav Dmitrievich Nedin; Alexander Ovanesovich Vatulyan

doi:10.4028/www.scientific.net/AMR.996.409

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 996Nondestructive Identification of Inhomogeneous...

Nondestructive Identification of Inhomogeneous Residual Stress State in Deformable Bodies on the Basis of the Acoustic Sounding Method

Abstract:

Analysis of inhomogeneous residual stress (RS) fields in bodies is one of the major problems of the mechanics of deformable solid bodies. In the present research the new techniques of identification of inhomogeneous RS in bodies are developed on the basis of surface displacement measurement in a set of points under vibrating sounding load. Corresponding nonlinear ill-posed inverse problems (IP) are formulated and solved numerically by means of iterative regularization. Based on computational experiments, the most advantageous sounding load types and frequency ranges providing the best reconstruction accuracy are revealed. The examples for a cantilever, a plate, a layer, and a cylindrical tube are presented.

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Periodical:

Advanced Materials Research (Volume 996)

Pages:

409-414

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.996.409

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Online since:

August 2014

Authors:

Vladimir Vladimirovich Dudarev, Rostislav Dmitrievich Nedin*, Alexander Ovanesovich Vatulyan

Keywords:

Beam, Computational Experiments, Identification, Ill-Posed Inverse Problems, Inhomogeneous Residual Stress, Iterative Regularization, Layer, Non-Destructive Acoustical Sounding, Nonlinear, Plate, Tube

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References

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DOI: 10.1007/978-3-642-21855-2_13

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