Equation 27 · Part 4 · Why Materials Fail: Fracture, Flaws and the Inspection Interval
Symbol sigma_0
What this part means
the scale parameter.
Its job in the formula
sigm occurs below the fraction bar. The quantity above the bar is divided by this expression; zero is excluded as a denominator.
Full expression→Symbol sigma_0→Article meaning
Where the article explains it
with m the Weibull modulus and a scale parameter.
The passage around this formula
…is an error of category. The standard treatment is the Weibull weakest-link model, in which the probability that a body of volume V survives a uniform stress is . with m the Weibull modulus and a scale parameter. A larger m means tighter scatter. A review of Weibull analysis across ceramics reports moduli of roughly 10 or below for many advanced ceramics such as alumina, hydroxyapatite and silicon carbide, below about 7 for the glass-ceramics and zirconias surveyed, and above 40…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
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Sources cited in the surrounding passage
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