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Optical Engineering

Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers
Author(s): Michele Scafidi; Giuseppe Pitarresi; Andrea Toscano; Giovanni Petrucci; Sabina Alessi; Augusto Ajovalasit
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Paper Abstract

Photoelasticity is particularly suitable for the analysis of the stress state in structural materials that are transparent and birefringent. Some techniques of digital photoelasticity (phase shifting and RGB) are applied to the analysis of stress field in two classes of structural materials. The first one consists of tempered glasses, such as those used in the automotive and architectural fields. The second one consists of thermoset polymers, typically used as matrices in fiber reinforced plastic structural composites. The birefringence of such resins is, in particular, exploited to investigate the development of swelling stresses and changes in fracture toughness as induced by water uptake aging.

Paper Details

Date Published: 18 March 2015
PDF: 9 pages
Opt. Eng. 54(8) 081206 doi: 10.1117/1.OE.54.8.081206
Published in: Optical Engineering Volume 54, Issue 8
Show Author Affiliations
Michele Scafidi, Univ. degli Studi di Palermo (Italy)
Giuseppe Pitarresi, Univ. degli Studi di Palermo (Italy)
Andrea Toscano, Univ. degli Studi di Palermo (Italy)
Giovanni Petrucci, Univ. degli Studi di Palermo (Italy)
Sabina Alessi, Univ. degli Studi di Palermo (Italy)
Augusto Ajovalasit, Univ. degli Studi di Palermo (Italy)

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