A New Technique for Characterization of Residual Stresses in Glass Surfaces: Scratch Test Completed with Image Analysis
Residual stresses significantly influence the strength and lifetime of the glass products, therefore their qualification and quantification during production is basically important for evaluating their probable reliability in application. The current paper aims at introducing a novel procedure of the suggested automatic glass quality test based on instrumented scratch test completed with computer aided image analysis. A special emphasis is put on the problem of limited reproducibility and reliability of the image processing, arisen in the first stage of the research work. The latest results consisting in the development of a new algorithm, providing a more reliable evaluation of the test data will be described.
P.J. Szabó, T. Réti, T. Czigány
S. Szeghalmy et al., "A New Technique for Characterization of Residual Stresses in Glass Surfaces: Scratch Test Completed with Image Analysis", Materials Science Forum, Vol. 589, pp. 275-280, 2008