Indication of deformations on the surface of toroidal objects by an optoelectronic method

Hans Rottenkolber; Werner P. O. Jueptner

doi:10.1117/12.498393

7 March 2006 Indication of deformations on the surface of toroidal objects by an optoelectronic method

Hans Rottenkolber, Werner P. O. Jueptner

Proceedings Volume 4101, Laser Interferometry X: Techniques and Analysis; (2006) https://doi.org/10.1117/12.498393
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Laser light was revolutionary to optical testing methods. An optical method, shearography in combination with phase-shifting, has prooved as suited, easy- to- handle method to indicate deformations. Cartesian coordinates are usually applied, which are only an approximation when testing sections of toroidal objects. Tires approximative have a toroidal shape. By using polar shearing method deformations of the complete circumference of toroidal objects can be analyzed. An example of a defect in a tire will be shown. A small deformation of the tire by lowering the inner pressure permits dropping the critical unwrapping procedure. The pure modulo-2pi-image is used. The image processing procedure is modified to receive an absolute threshold for defect indication.

Citation Download Citation

Hans Rottenkolber and Werner P. O. Jueptner "Indication of deformations on the surface of toroidal objects by an optoelectronic method", Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); https://doi.org/10.1117/12.498393

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