Comparative Holography: A Technique For Eliminating Background Fringes In Holographic Interferometry

Don B. Neumann

doi:10.1117/12.7973540

1 August 1985 Comparative Holography: A Technique For Eliminating Background Fringes In Holographic Interferometry

Don B. Neumann

Author Affiliations +

Optical Engineering, Vol. 24, Issue 4, 244625 (August 1985). https://doi.org/10.1117/12.7973540

Abstract

Described is a technique for optically subtracting the phase terms in holographic interferometry to yield fringe patterns showing the differences between a master object and an object under test. The technique may be applied to the strain fringes produced in holographic nondestructive testing or to contour fringes used to measure shapes of parts. In either case, the fringe spatial frequency is greatly reduced by eliminating unwanted phase terms. The test stress may then be greatly increased, yielding increased detection sensitivity, or the contour interval may be greatly reduced, providing more accurate measurement.

Citation Download Citation

Don B. Neumann "Comparative Holography: A Technique For Eliminating Background Fringes In Holographic Interferometry," Optical Engineering 24(4), 244625 (1 August 1985). https://doi.org/10.1117/12.7973540

Published: 1 August 1985

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available