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Numerical size estimates of inclusions in elastic bodies

Giovanni Alessandrini1, Antonio Bilotta2, Giovanni Formica2, Antonino Morassi3, Edi Rosset1 and Emilio Turco2

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We consider the problem of detecting elastic inclusions in elastic bodies by means of mechanical boundary data only, that is measurements of boundary displacement and traction. In previous work of some of the present authors, upper and lower bounds on the size (area or volume) of the inclusions were proven analytically. Following the guidelines drawn up in such previous theoretical study, an extended numerical investigation has been performed in order to prove the effectiveness of this approach. The sensitivity with respect to various relevant parameters is also analysed.


PACS

62.20.D- Elasticity

02.60.-x Numerical approximation and analysis

02.30.Zz Inverse problems

81.70.Bt Mechanical testing, impact tests, static and dynamic loads

61.72.Qq Microscopic defects (voids, inclusions, etc.)

MSC

74B10 Linear elasticity with initial stresses

74S05 Finite element methods

74G75 Inverse problems

Subjects

Mathematical physics

Computational physics

Condensed matter: structural, mechanical & thermal

Dates

Issue 1 (February 2005)

Received 6 July 2004, in final form 11 October 2004

Published 16 November 2004



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