Paper Titles
Spar Corner Radius Integrity for the A400M Wing
p.197
Developments in RGB Photoelasticity
p.205
Phase-Shifting Method with Unknown Intervals in Phase-Shifting Digital Holography
p.211
Transition Saddle-Cylinder Shape of Thin Unsymmetric [0/90] Square Plates under Hygrothermal Loads: Fringe Projection Method and Variational Approach
p.217
Simultaneous Measurement of Out-of-Plane and In-Plane Displacements by Phase-Shifting Digital Holographic Interferometry
p.223
Complete Two-Dimensional Principal Stress Separation by the Photoelastic Oblique Incidence Method
p.229
Measurement of Stokes Parameters by Quarter-Wave Plate and Polarizer
p.235
Semi Empirical Stress Analysis of a Brittle Material in a Vicinity of a Stress Concentrator
p.243
Dissipative Behaviour of Metallic Materials in Low Stress Cyclic Loading
p.253

Simultaneous Measurement of Out-of-Plane and In-Plane Displacements by Phase-Shifting Digital Holographic Interferometry

Article Preview

Abstract:

In this paper, we apply phase-shifting digital holographic interferometry to simultaneous measurement for out-of-plane and in-plane displacements by employing two beam illuminations for an object. Phase-shifted holograms before and after displacements of the object using each of two beams are recorded by a CCD camera, separately. The complex amplitude at each pixel of the CCD plane is analyzed from the holograms taken with phase-shifting. The complex amplitude of he object is reconstructed from the complex amplitude distribution on the CCD plane using the Fresnel diffraction integral. Each directional phase difference distribution is obtained by calculating the phases before and after deformation for each directional beam. The phase distribution for out-of-plane displacements is obtained by calculating the sum of the two phase difference distributions. The phase distribution for in-plane displacements is obtained by calculating the difference of the two phase difference distributions. The phase values provide accurate displacement distribution information. Actually, when the object deforms in both out-of-plane and in-plane directions, it is possible to analyze the displacement distribution in each direction. The theory and an experiment are shown.

You might also be interested in these eBooks
Advances in Experimental Mechanics IV View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 3-4)

Pages:

223-228

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.3-4.223

Citation:

Cite this paper

Online since:

August 2006

Authors:

S. Okazawa, Motoharu Fujigaki, Yoshiharu Morimoto, Toru Matui

Keywords:

In-Plane Displacement, Out-of-Plane Displacements, Phase-Shifting Digital Holography, Simultaneous Measurement, Two Beam Illuminations

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] P.S. Valery, S.P. Vladimir, A.N. Sergey, V.B. Vitaly, N.O. Igor and M.B. Mikhail: Strain and Stress Analysis by Holographic and Speckle Interferometry, Wiley, (1996).

Google Scholar

[2] T. Hayashi, R. Ugo and Y. Morimoto: Experimental Observation of Stress Waves Propagating in Laminated Composites, Exp. Mech., Vol. 26-2 (1986), pp.169-174.

DOI: 10.1007/bf02320011

Google Scholar

[3] G. Pedrini, P. Froning, H. Fessler and H.J. Tiziani: In-line digital holographic interferometry, Applied Optics, Vol. 37-26 (1998), pp.6262-6269.

DOI: 10.1364/ao.37.006262

Google Scholar

[4] B. Javidi and T. Nomura: Securing Information by Use of Digital Holography, Opt. Lett., Vol. 25-1 (2000), pp.28-30.

DOI: 10.1364/ol.25.000028

Google Scholar

[5] I. Yamaguchi and T. Zhang: Phase-shifting Digital Holography, Opt. Lett., Vol. 22-16 (1997), pp.1268-1270.

DOI: 10.1364/ol.22.001268

Google Scholar

[6] I. Yamaguchi, J. Kato and H. Matsuzaki: Measurement of surface shape and deformation by phase-shifting image digital holography, Opt. Eng., Vol. 42-5 (2003), pp.1267-1271.

DOI: 10.1117/1.1566778

Google Scholar

[7] Y. Morimoto, T. Nomura, M. Fujigaki, S. Yoneyama and I. Takahashi: Deformation Measurement by Phase-shifting Digital Holography, Exp. Mech., Vol. 45-1, (2005), pp.65-70.

DOI: 10.1007/bf02428991

Google Scholar

[8] Y. Morimoto, T. Nomura, M. Fujigaki and I. Takahashi: Reduction of Speckle Noise Effect by Divided Holograms in Phase-shifting Digital Holography, Proc. of 12 th International Conference on Experimental Mechanics, ICEM12, (2004), pp.554-555.

Google Scholar

[9] C. Falldorf, C. von Kopylow, W. Osten and W. Jüptner: Digital Holography and Grating Interferometry: A Complementary Approach, Proc. SPIE, Vol. 5457, (2004), pp.225-231.

DOI: 10.1117/12.545645

Google Scholar