Steinberg's Life Calculator

Results > Results > Fatigue Life

This tool is to determine the life of the electronic components connected to printed circuit board (PCB) using Steinberg’s fatigue life equation and Normal mode analysis result.

Inputs for tool are the following.
  1. Normal mode result.
  2. Component length.
  3. PCB length and thickness.
  4. Factor related to component position and type.
  5. PSD input, duration and Amplitude factor or overall grms for each loading type.
  6. b coefficient.
  7. Computation level(1,2 and 3 sigma level).

Compute Life:

The relative displacement based on the Steinberg model and the normal mode result is calculated. With that ratio, the fatigue life of the component is computed and updated in the dialog.

Export:

Computed life along with other input parameters will be exported as text file.

Note:
  1. To compute life, the normal mode result should be displayed first.
  2. Reference:
    • Andrés Garcíaa, Félix Sorribes-Palmerb, and Gustavo Alonsoc, “Application of Steinberg vibration fatigue model for structural verification of space instruments”, 2018. https://doi.org/10.1063/1.5019088
    • Tom Irvine, “SHOCK and VIBRATION FATIGUE CRITERIA FOR ELECTRICAL COMPONENTS”, 2013.