Formulas: fatigue damage spectrum method of combining spectra

MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests

Last Updated 29 Oct 2026

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Formula 1

The fatigue damage spectrum is computed from:

D P\left(f_{n}\right)=f_{n} T\left(\frac{G\left(f_{n}\right)}{f_{r}}\right)^{\overline{2}}

\quad D P_{t}\left(f_{n}\right)=\sum_{i=1}^{N} D P_{i}\left(f_{n}\right)

MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

The fatigue damage spectrum is computed from:

D P\left(f_{n}\right)=f_{n} T\left(\frac{G\left(f_{n}\right)}{f_{r}}\right)^{\overline{2}}

\quad D P_{t}\left(f_{n}\right)=\sum_{i=1}^{N} D P_{i}\left(f_{n}\right)