Equation 31 · Part 1 · Why Materials Fail: Fracture, Flaws and the Inspection Interval
Symbol m
What this part means
m is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
m 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 m→Article meaning
The passage around this formula
The practically important consequence is size scaling. Because a larger stressed volume samples more of the flaw population, mean strength falls as the specimen grows, and the ratio of strengths of two specimen geometries goes as the ratio of their effective volumes raised to the power 1/m [ 12 ] . Small-coupon test data therefore systematically overstate the strength of a full-size component, and the overstatement is worse for materials with low Weibull modulus — that is, for exactly the materials whose scatter already makes them hard to design with.
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A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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Sources cited in the surrounding passage
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