ガラス繊維の強度分布に及ぼす試験片長の影響について(<小特集>信頼性工学小特集)

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概要

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• The change in strength distribution of glass fibers with varying specimen length was investigated. When the fiber length decreased, the mean value of fracture stress increased remarkably, but the coefficient of variation decreased. The effect of specimen length on the strength distribution was analysed by using the weakest link model. The strength distribution of links was assumed to be exppressible by Weibull distribution function. In this case, the shape parameter (corresponding to the coefficient of variation) was found to include the variation in sectional area of glass fibers when obtained from the fracture load data. The correlation coefficient for the fracture load and the sectional area was about unity and the coefficient of variation in fracture stress of glass fibers was 15-20%, which is lower than those estimated previously by several researchers.

• 1981-01-15

著者

• 三木 光範

  大阪市立工業研究所

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