Search results for " RGB Photoelasticity"

showing 3 items of 3 documents

RGB photoelasticity applied to the analysis of membrane residual stress in glass

2011

The measurement of residual stresses is of great relevance in the glass industry. The analysis of residual stress in glass is usually made by photoelastic methods because glass is a photoelastic material. This paper considers the determination of membrane residual stresses in glass plates by automatic digital photoelasticity in white light (RGB photoelasticity). The proposed method is applied to the analysis of membrane residual stresses in some tempered glass. The proposed method can effectively replace manual methods based on the use of white light, which are currently provided by some technical standards.

PhotoelasticityMaterials scienceGlass industryApplied MathematicsToughened glassresidual stresses glass RGB photoelasticity image processingSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineMembraneResidual stressWhite lightRGB color modelComposite materialSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeInstrumentationEngineering (miscellaneous)Measurement Science and Technology
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Photoelastic Analysis of Edge Residual Stresses in Glass by the Automated Tint Plate Method

2013

The analysis of residual stress in glass is usually carried out by means of photoelastic methods. This article considers the automation of the white light photoelastic method based on the use of a full-wave plate placed behind the glass plate. In particular, the method in based on the use of RGB photoelasticity in white light in conjunction with a full wave plate. The proposed method have been applied to the analysis of membrane residual stresses in tempered glass, showing that it can effectively replace manual methods of photoelastic analysis of residual stresses in glass when a low photoelastic retardation is present.

PhotoelasticityPlate methodMaterials sciencebusiness.industryGlass Residual Stresses RGB Photoelasticity Tint PlateMechanical EngineeringToughened glassEdge (geometry)Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineOpticsFull waveMechanics of MaterialsResidual stressWhite lightSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialebusinessExperimental Techniques
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A critical assessment of automatic photoelastic methods for the analysis of edge residual stresses in glass

2014

The measurement of residual stresses is of great importance in the glass industry. The analysis of residual stresses in the glass is usually carried out by photoelastic methods since the glass is a photoelastic material. This article considers the determination of membrane residual stresses of glass plates by digital photoelasticity. In particular, it presents a critical assessment concerning the automated methods based on gray-field polariscope, spectral content analysis, phase shifting, RGB photoelasticity, “test fringes” methods and “tint plate” method. These methods can effectively automate manual methods currently specified in some standards.

PhotoelasticityMaterials scienceGlass industrybusiness.industryApplied MathematicsMechanical EngineeringMechanical engineeringEdge (geometry)OpticsMechanics of MaterialsResidual stressModeling and SimulationCritical assessmentGlass residual stress digital photoelasticity gray-field polariscope spectral content analysis phase shifting RGB photoelasticity test fringes image processingbusinessThe Journal of Strain Analysis for Engineering Design
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