Equation 4 · Part 3 · Why Materials Fail: Fracture, Flaws and the Inspection Interval
Symbol a
What this part means
a occurs above the fraction bar. The numerator is divided by the entire denominator below it.
Its job in the formula
a occurs above the fraction bar. The numerator is divided by the entire denominator below it.
Full expression→Symbol a→Article meaning
The passage around this formula
The first half of the argument is purely elastic and predates Griffith. An elliptical hole in a stressed plate does not merely remove load-bearing material; it redistributes the stress that would have passed through that material into the region around the hole’s sharpest curvature. For an elliptical flaw of half-length a and tip radius of curvature in a plate under remote tension…
Learn the underlying idea
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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