Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. (a) Setup of the polariscope for the Tardy phase-shifting method (TPSM), (b) general orientation of principal stresses, and (c) vertical maximum principal stress (aligned with the polarizer). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Specimens: (a) RGB calibration sample, (b) tempered glass plate (door’s glass), and (c) polymer beam sample (dimensions in mm). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Images in the region of interest (ROI) of the model shown in Fig. 2(b), acquired for (a) to (c) the TPSM and (d) the RGB method (color image in electronic version). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Relative retardation δ and principal stress difference σ1−σ2 along the central section of the ROI shown in Fig. 2(b) determined by the TPSM (-), by the RGB method (--), and, for comparison, by the Tardy manual compensation method (TMCM) (·). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Stress σx determined from the experimental results shown in Fig. 4. Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Acquired isochromatic fringes in white light dark field circular polariscope after different aging times on a DGEBF sample (color image in electronic version). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. White light isochromatics of a DGBEF sample left in water at 80°C for 22 h (color image in electronic version). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Stress along the vertical symmetry axis of the DGEBF sample shown in Fig. 2(c) aged in water (a) at 80°C and (b) at room temperature, for different aging times. Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Stress in the central point (y/W=0.5) of the DGEBF sample of Fig. 2(c) during absorption and desorption (color image in electronic version). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. Isochromatic fringes in monochromatic light for different aging times on a DGEBA single-edge notched bending sample (color image in electronic version): (a) initial; (b) 23 h; (c) 95 h; (d) 237 h. Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE

Date of download: 6/25/2016 Copyright © 2016 SPIE. All rights reserved. (a) Images acquired for the TPSM from a single-edge notched bending sample after aging for 48 h; (b) single-edge notched bending sample; and (c) stresses σx−σy along the ligament of not-cracked material (color image in electronic version). Figure Legend: From: Review of photoelastic image analysis applied to structural birefringent materials: glass and polymers Opt. Eng. 2015;54(8): doi: /1.OE