Search results for "Glass industry"
showing 4 items of 4 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.
Bell e net vidre. Producción, distribución y consumo de vidrio en el reino de Valencia durante la Baja Edad Media
2021
El presente artículo analiza el desarrollo de la industria vidriera valenciana entre los siglos XIII y XV. Para ello se recurre a un centenar de documentos de carácter notarial, normativo, judicial y fiscal, procedentes de distintos archivos valencianos. Estos permiten estudiar la localización de los hornos de vidrio en el reino de Valencia y las formas de trabajo de los vidrieros, así como los procesos de distribución y los sistemas de venta del vidrio doméstico. Finalmente, se aborda la demanda y el consumo de estos bienes y sus usos en las viviendas de diferentes sectores sociales de la época. Todo ello invita a reconsiderar la relevancia de esta industria en el reino de Valencia, mucho …
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.
Şeffaf cisimlerim 3B taranması
2010
Many practical tasks in industry, such as automatic inspection or robot vision, often require scanning of three-dimensional shapes with non-contact techniques. However, transparent objects, such as those made of glass, still pose difficulties for classical scanning techniques. The reconstruction of surface geometry for transparent objects is complicated by the fact that light is transmitted through, refracted and in some cases reflected by the surface. Current approaches can only deal relatively well with sub-classes of objects. The algorithms are still very specific and not generally applicable. Furthermore, many techniques require considerable acquisition effort and careful calibration. T…