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Proceedings Paper

Profiling of gas turbine blade using phase shifting Talbot interferometric technique
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Paper Abstract

In this paper we present phase shifting Talbot interferometry for the measurement of surface topography of the gas turbine blades. Interferograms of the different steps are recorded and displayed on the computer monitor using digital techniques. Presence of the harmonic components in the phase map due to the Ronchi gratings are removed by using Fourier filtering. The variation of the surface height at the different points of the objects is obtained by generating the phase map. The results obtained by phase shifting Talbot interferometric techniques are in good agreements with that of the measured by the manually controlled co- ordinate measuring machine. The critical analysis of results alongwith error analysis is presented.

Paper Details

Date Published: 13 June 2005
PDF: 12 pages
Proc. SPIE 5856, Optical Measurement Systems for Industrial Inspection IV, (13 June 2005); doi: 10.1117/12.612471
Show Author Affiliations
Chandra Shakher, Indian Institute of Technology Delhi (India)
D. S. Mehta, Indian Institute of Technology Delhi (India)
Saba Mirza, Indian Institute of Technology Delhi (India)
Priti Singh, Indian Institute of Technology Delhi (India)


Published in SPIE Proceedings Vol. 5856:
Optical Measurement Systems for Industrial Inspection IV
Wolfgang Osten; Christophe Gorecki; Erik L. Novak, Editor(s)

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