Volume 30, Issue 6 (November 2002)

    Test Methodology for Strength Testing of Soda-Lime-Silica Float Glass Before and After Enameling

    (Received 9 January 2002; accepted 11 July 2002)

    CODEN: JTEOAD

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    Abstract

    Different biaxial flexure test geometries were investigated to determine the most reliable test for evaluating the strength of float glass specimens before and after enameling. The enameled and unenameled samples were tested using the ring-on-ring (ROR) and ball-on-ring (BOR) strength tests. The strengths of each sample set were analyzed using a conventional two-parameter Weibull analysis. For direct comparison of the data, combined Weibull moduli were calculated for the unenameled tin side, unenameled air side, and enameled tin side data sets. The principle of independent action (PIA) was assumed to be the appropriate fracture criterion and the data were scaled to determine if discrepancies existed between the different testing methodologies. The scale parameters (σo) were also calculated for the different test geometries. The results showed that there were no statistical differences between the scaled data. Based on the results it was concluded that the ROR test geometry was the better choice compared to the BOR test geometry because of the larger stressed area. The use of a concentric support ring was also found to be more desirable than a ring on equally spaced balls because of the stress concentrations at the support balls, which can lead to problems.


    Author Information:

    Krohn, MH
    Graduate Research Assistant, Associate Professor, Research Associate, and Professor, Penn State University, University Park, PA

    Hellmann, JR
    Graduate Research Assistant, Associate Professor, Research Associate, and Professor, Penn State University, University Park, PA

    Shelleman, DL
    Graduate Research Assistant, Associate Professor, Research Associate, and Professor, Penn State University, University Park, PA

    Green, DJ
    Graduate Research Assistant, Associate Professor, Research Associate, and Professor, Penn State University, University Park, PA

    Sakoske, GE
    Manager, Glass Research and Development, Ferro Corporation, Washington, PA

    Salem, JA
    Materials Research Engineer, Life Prediction Branch, NASA Glenn Research Center, Cleveland, OH


    Stock #: JTE12343J

    ISSN: 0090-3973

    DOI: 10.1520/JTE12343J

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    Author
    Title Test Methodology for Strength Testing of Soda-Lime-Silica Float Glass Before and After Enameling
    Symposium , 0000-00-00
    Committee E28