A. M. Wahl
Gave spring designers the stress-correction factor that bears his name.
An American mechanical engineer at Westinghouse, Wahl derived the stress-correction factor for helical springs in 1929 — the adjustment that accounts for curvature and makes spring design accurate.
The spring-rate tool here reports the Wahl factor. His analysis remains the standard a century later.
Portrait: a stylized blueprint-line rendering, not a photograph.
Contributions in the toolbox
- 1929
Curvature correction factor for helical spring stress.
→ Coil Spring Rate - 1944
'Mechanical Springs' — the standard design text.
→ Coil Spring Rate