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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 28 — Oct. 1, 1998
  • pp: 6707–6715

Fiber electronic speckle pattern interferometry and its applications in residual stress measurements

Jingbo Zhang and Tow Chong Chong  »View Author Affiliations


Applied Optics, Vol. 37, Issue 28, pp. 6707-6715 (1998)
http://dx.doi.org/10.1364/AO.37.006707


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Abstract

A two-dimensional in-plane displacement-sensitive electronic speckle pattern interferometer has been developed. With a fiber coupler with one input and four outputs, two sets of dual-beam interferometric configurations in orthogonal directions are constructed to determine in-plane displacements completely. When a CCD camera with a zoom lens is located at an adequate distance from the specimen, a testing area ranging from 1.4 mm × 1.0 mm to 30.0 mm × 24.0 mm can be examined in quasi-real-time. Incorporated with the hole-drilling technique, it has currently been demonstrated in residual stress measurements. One application is for determining the residual stress of a thick cylinder consisting of two concentric circular tubes with interference fit. The other is for analyzing the residual stress distribution of a recordable optical compact disc. A simple approach to interpreting the values of residual stresses from the displacement contours is presented.

© 1998 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(210.4590) Optical data storage : Optical disks

History
Original Manuscript: January 12, 1998
Revised Manuscript: June 16, 1998
Published: October 1, 1998

Citation
Jingbo Zhang and Tow Chong Chong, "Fiber electronic speckle pattern interferometry and its applications in residual stress measurements," Appl. Opt. 37, 6707-6715 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-28-6707

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