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Proceedings Paper

Implementation of compensation speckle interferometry for high-precision determination of material mechanical properties
Author(s): Igor N. Odintsev; Andrey A. Apalkov; Vladimir S. Pisarev
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Paper Abstract

The paper contains a brief description of main principles of compensation speckle interferometric technique with an emphasis is made on their implementing in non-traditional fields of material testing. The main essence of optical compensation consists of the fact that routine quantitative interpretation of fringe patterns is substituted with more accurate measuring the geometrical parameters of the interferometer set up corresponding to the compensation instants. Metrological basis of this system is the electronic speckle pattern interferometer combining two speckle fields with both an object and a reference speckle pattern is created by a ground glass diffuser. A visualization of fringe patterns related to a small difference between two deflection fields of plane specimen under pure bending is performed by digital subtraction of corresponding intensity fields derived from CCD-camera. Some examples of Poisson's ratio and elasticity modulus determination for composite materials and their evolution due to internal humidity level changing are also presented.

Paper Details

Date Published: 17 August 1999
PDF: 11 pages
Proc. SPIE 3745, Interferometry '99: Applications, (17 August 1999); doi: 10.1117/12.357775
Show Author Affiliations
Igor N. Odintsev, Engineering Ctr. of Nuclear Engineering Strengths, Reliability and Lifetime (Russia)
Andrey A. Apalkov, Engineering Ctr. of Nuclear Engineering Strengths, Reliability and Lifetime (Russia)
Vladimir S. Pisarev, Central Aero-Hydrodynamic Institute (Russia)


Published in SPIE Proceedings Vol. 3745:
Interferometry '99: Applications

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