Automatic methods of photoelasticity have had a significant progress with the development of automatic acquisition and image processing methods. This article concerns RGB photoelasticity, which allows the determination of the photoelastic retardation using, usually, a single acquisition of the isochromatic fringes in white light by a colour camera. In particular, the article presents an overview of the main characteristics of RGB photoelasticity that is influence of the quarter-wave plate error, number of acquisitions, type of light source, determination of low and high fringe orders, methods for searching the retardation, scanning procedures, calibration on a material different from that under test, combined use of the RGB and phase shifting methods. A short section on the applications of RGB photoelasticity completes the article.
Ajovalasit, A., Petrucci, G., Scafidi, M. (2015). Review of RGB photoelasticity [10.1016/j.optlaseng.2014.12.008].
Review of RGB photoelasticity
AJOVALASIT, Augusto;PETRUCCI, Giovanni
;SCAFIDI, Michele
2015-01-01
Abstract
Automatic methods of photoelasticity have had a significant progress with the development of automatic acquisition and image processing methods. This article concerns RGB photoelasticity, which allows the determination of the photoelastic retardation using, usually, a single acquisition of the isochromatic fringes in white light by a colour camera. In particular, the article presents an overview of the main characteristics of RGB photoelasticity that is influence of the quarter-wave plate error, number of acquisitions, type of light source, determination of low and high fringe orders, methods for searching the retardation, scanning procedures, calibration on a material different from that under test, combined use of the RGB and phase shifting methods. A short section on the applications of RGB photoelasticity completes the article.File | Dimensione | Formato | |
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11 - 2015 OLEN 68 pp. 58-73 - Review of RGB photoelasticity - Ajovalasit, Petrucci, Scafidi.pdf
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