Equation 29 · Part 1 · 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 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
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
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 for one magnesium-based glass, while emphasising that reliable modulus estimates need substantial sample sizes [ 11 ] .
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
These citations provide research context; check each source for the exact claim it supports.