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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 13 — May. 1, 2005
  • pp: 2530–2540

Virtually calibrated projection moire interferometry

Mark Kimber and Jonathan Blotter  »View Author Affiliations


Applied Optics, Vol. 44, Issue 13, pp. 2530-2540 (2005)
http://dx.doi.org/10.1364/AO.44.002530


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Abstract

Projection moire interferometry (PMI) is an out-of-plane displacement measurement technique that consists of differencing reference and deformed images of a grid pattern projected onto the test object. In conventional PMI, a tedious process of computing the fringe sensitivity coefficient (FSC), which requires moving the test object or the reference plane to known displacements, is used. We present a new technique for computing the FSC values that is called virtually calibrated projection moire interferometry (VCPMI). VCPMI is based on computer simulations of the conventional PMI process and does not require moving the actual test object or reference plane. We validate the VCPMI approach by comparing results for a flat plate and an airfoil with those made by use of other measurement methods.

© 2005 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques

Citation
Mark Kimber and Jonathan Blotter, "Virtually calibrated projection moire interferometry," Appl. Opt. 44, 2530-2540 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-13-2530


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