Elasticity Measurement Using Holographic Interferometry Double Exposure Technique

Abstract

Holographic measurement of modulus elasticity was performed on samples of aluminum can. It is based upon the measurement of the displacement as a function number of fringes appeared on the body of the loaded can. The value of the modulus elasticity for the aluminum can is obtained as (1.00 ± 0.03) « 108 Nm^–2. This result is found in good agreement with a mechanical measurement by taking into account any experimental error. Key words: Holographic interferometry, double exposure, displacement, modulus of elasticity, fringes, laser