load enhancement factor, LEF


ECSS-E-ST-32-01C Rev. 1


factor to be applied on the load level of the spectrum of fatigue test(s) in order to demonstrate with the test(s) a specified level of reliability and confidence


  • NOTE 1 The LEF is dependent upon the material or construction, the number of test articles, and the duration of the tests.
  • NOTE 2 MIL-HDBK-17F, Volume 3, Section 7.6.3 gives an approach for calculating the LEF for composite structures.
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