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MORPHOLOGICAL ANALYSIS FOR TEMPORARY BEHAVIOUR DESCRIPTION OF PHOTOELASTICITY IMAGES ON PLASTIC FILMS GROUP OF AUTOMATION, ELETRONIC AND COMPUTER SCIENCE.

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Presentation on theme: "MORPHOLOGICAL ANALYSIS FOR TEMPORARY BEHAVIOUR DESCRIPTION OF PHOTOELASTICITY IMAGES ON PLASTIC FILMS GROUP OF AUTOMATION, ELETRONIC AND COMPUTER SCIENCE."— Presentation transcript:

1 MORPHOLOGICAL ANALYSIS FOR TEMPORARY BEHAVIOUR DESCRIPTION OF PHOTOELASTICITY IMAGES ON PLASTIC FILMS GROUP OF AUTOMATION, ELETRONIC AND COMPUTER SCIENCE INVESTIGATION Institución Universitaria ITM Medellín - Colombia psivt2013 M.Sc. Juan Carlos Briñez De León Ph.D. Alejandro Restrepo Martínez Ph.D. Francisco López Giraldo

2 AGENDA IntroductionMethodologyPlastic film deformationPolarizing optical assembly for image acquisitionStereology and Eroded surfacesResults and AnalysisConclusion psivt2013

3 Introduction

4 psivt2013 Introduction Photoelasticity studies

5 psivt2013 Introduction Optical properties in thermo-deformable plastic films Color Fringes Order changes

6 Plastic film deformation psivt2013 Methodology - Image acquisition ASTM D882-10, 2010 Lengthwise deformation Shimadzu AGX 100KNewton ParameterMeasurement Thickness130 µm Length15 cm Width2.5cm Speed25mm/min ElastoplasticViscoelastic Time Force

7 Polarizing optical assembly psivt2013 Methodology - Image acquisition 30 FPS 1280x1024 pixels ROI 576x150 pixels Maximum intensity

8 Image Sequence psivt2013 Methodology - Image acquisition THORLABS DCU224C 30 FPS color image

9 Stereology in fringes description psivt2013 Methodology - Image processing N = number of frames temporarily extracted from the deformation video Images number 1 2 3 4... Fringe fraction in %

10 Eroded surfaces in fringes description psivt2013 Methodology - Image processing

11 Mechanical behavior of deformation psivt2013 Results and Analysis ViscoelasticElastoplastic

12 Stereology Graph psivt2013 Results and Analysis Slow changes Fast changes

13 Slow changes Fast changes Derivate function of Stereology Vector psivt2013 Results and Analysis

14 Eroded surfaces psivt2013 Results and Analysis Slow changes in size Fast changes in size

15 Graphics comparison psivt2013 Results and Analysis Slow changes Fast changes Viscoelastic Elastoplastic

16 Correlation coefficient between mechanical and morphological behavior psivt2013 Results and Analysis Correlation coefficient between mechanical and morphological behavior Stereology - Force Erosion cycles - Force Zone RGBRGB All data-0.18210.08680.0699-0.16340.06130.0573 Elastoplastic-0.1918-0.2442-0.2585-0.1812-0.2588-0.2433 Viscoelastic0.9746-0.96480.4296 0.9844-0.96350.4640

17 psivt2013 Conclusion Color fringes in image analysis show zones that could be associated with viscoelastic zones of mechanical deformation. Stereology and erosion surfaces, applied to image analysis, allows the description of mechanical behavior suffered by a plastic film when it supports a load.

18 psivt2013 Acknowledgements psivt2013 CIMATEL

19 psivt2013 Thank you for your time! Any questions?


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