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Abstract

Variability in the strength of ARALL® laminates is studied. Standard statis tical procedures are used to determine the distribution function that best fits ARALL® laminates strength data. The normal, log-normal, and two-parameter Weibull distributions are compared using the Kolmogorov-Smirnov goodness-of-fit test. At the 5 % significance level none of these distributions is rejected. However, the data indicate that the strength of laminates, for a given gauge length and cross section, can be best fitted to a two-parameter Weibull distribution. In addition, some small panel-to-panel variations in strength are also found.

The effect of gauge length on the strength of ARALL® laminates is examined. The strength of ARALL® laminates seems to exhibit no gauge length effects over the range from 2 to 20 inches, holding the strain rate constant. This effect, if true in general, would be a substantial advantage for ARALL® laminates, because scaling effects would be mini mized.

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Statistical Analysis of Tensile Strength of ARALL® Laminates

Abstract

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