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| ==Acceleration Factor==
| | #REDIRECT [[Arrhenius_Relationship]] |
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| Most practitioners use the term acceleration factor to refer to the ratio of the life (or acceleration characteristic) between the use level and a higher test stress level or:
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| ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}</math>
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| For the Arrhenius model this factor is:
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| ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}=\frac{C\text{ }{{e}^{\tfrac{B}{{{V}_{u}}}}}}{C\text{ }{{e}^{\tfrac{B}{{{V}_{A}}}}}}=\frac{\text{ }{{e}^{\tfrac{B}{{{V}_{u}}}}}}{\text{ }{{e}^{\tfrac{B}{{{V}_{A}}}}}}={{e}^{\left( \tfrac{B}{{{V}_{u}}}-\tfrac{B}{{{V}_{A}}} \right)}}</math>
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| Thus, if <math>B</math> is assumed to be known a priori (using an activation energy), the assumed activation energy alone dictates this acceleration factor!
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