Method of evaluating a physical quantity representative of...

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

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C434S126000

Reexamination Certificate

active

07403879

ABSTRACT:
The invention relates to the modelling of the interactions between an incident wave and an obstacle, in particular in the area of nondestructive testing. According to the invention, the surface of the obstacle is meshed and at least one source (Si) is allocated to each surface element (dSi). Boundary conditions are then calculated at each mesh cell of the obstacle and source values are deduced therefrom. On the basis of an interaction matrix and of these source values, a physical quantity representative of the interaction between the wave and the obstacle is estimated at any point of space.

REFERENCES:
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Molecular Expressions Optical Microscopy Primer Physics of Light and Color “Interactive Java Tutorials: Reflection and Refraction with Huygens Wavelets.” http://micro.magnet.fsu.edu/primer/java/reflection/huygens/index.html.
Lim, Raymond “Acoustic scattering by a partially buried three-dimensional elastic obstacle.” J. Acoust. Soc. Am. 104 (2) Pt. 1, Aug. 1998.
Liebaux et al., “The distributed source method: a concept for open magnetic cores modeling”—European Physical Journal, Applied Physics, Nov. 2002, EDP Sciences, France, vol. 20, No. 2—Oct. 25, 2002—pp. 145-150, XP008021970 iSSN: 1286-0042. Retrieved from the Internet: URL: http://www.edpsciences.org/articles/epjap/pdf/2002/11/ap01142.pdf on Sep. 16, 2003.
Placko et al., “Theoretical Study of magnetic and ultrasonic sensors: dependence of magnetic potential and accoustic pressure on the sensor geometry”—Advanced Non destructive evaluation for structural and biological health monitoring, Newport Beach, CA, USA, Mar. 6-8, 2001. vol. 4335, pp. 52-62, XP 008021372—Proceedings of the SPIE—The International Society of Optical Engineering, 2001, USA—ISSN: 0277-786X.
Placko et al., “Theorietical computation of acoustic pressure generated by ultrasonic sensors in the presence of an interface”. Smart Nondestructive evaluation for healtjh and biolgoical systems, Newport Beach, USA, Mar. 18-20, 2002, vol. 4702, Mar. 18, 2002—pp. 157-168, XP008021971—Proceedings of the SPIE—The International Society of Optical Engineering, 2002, USA—ISSN: 0277-786X.
International Search Report, PCT/FR 03/03323; report dated Mar. 25, 2004.

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