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On the use of the Weibull and the normal cumulative probability models in structural design

✍ Scribed by M. Elgueta; G. Díaz; S. Zamorano; P. Kittl

Publisher
Elsevier Science
Year
2007
Weight
136 KB
Volume
28
Category
Article
ISSN
0261-3069

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✦ Synopsis

In this paper, the Weibull and the normal cumulative probability are discussed and compared in relation to the analysis of the fracture toughness K IC . It is shown that, in the normal distribution, K IC can take negative or zero values, causing complications in structural design. In the Weibull distribution, this does not happen and its lower limit K ICL can be determined without problems. So, the Weibull cumulative probability represents reality in a better form. Finally, comparing experimental data with both distributions, it is found that the Weibull probability is more economics in terms of structural design.

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