Adaptive conjugate smoothing of digital images using photo-elastic coatings

Algiment Aleksa; Minvydas Ragulskis; Arvydas Palevicius; Jurate Ragulskiene

doi:10.1117/12.806227

30 March 2009 Adaptive conjugate smoothing of digital images using photo-elastic coatings

Algiment Aleksa, Minvydas Ragulskis, Arvydas Palevicius, Jurate Ragulskiene

Proceedings Volume 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009; 72924B (2009) https://doi.org/10.1117/12.806227
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

The methods for investigation of the element under vibration of smart structures is proposed. The first eigenmodes of bending vibrations of a circular pezoceramic plate with fixed internal radius are determined and it is assumed that vibrations take place according to the eigenmode. The stresses in the coating are calculated by using the procedure of conjugate approximation. Then the relative error norms for the finite elements are determined. They are used in the proposed procedure of adaptive conjugate approximation with smoothing. From the presented results it is shown that the adaptively smoothed image is advantageous when compared with the conventionally smoothed images. Thus the proposed procedure of adaptive conjugate smoothing builds the ground for realistic reconstruction of experimentally produced photo-elastic fringes and effective application of digitally reconstructed images in hybrid numerical - experimental procedures. Analysis is performed using a plate bending element assuming that a coating has no effect to the motion of a plate. Relative error norms for the finite elements are determined. They are used in the procedure of adaptive conjugate approximation with smoothing.

Citation Download Citation

Algiment Aleksa, Minvydas Ragulskis, Arvydas Palevicius, and Jurate Ragulskiene "Adaptive conjugate smoothing of digital images using photo-elastic coatings", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72924B (30 March 2009); https://doi.org/10.1117/12.806227

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