Quick Answer
Calculate Coffin-Manson-Based Thermomechanical Fatigue Life Estimator for SMD Solder Joints
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Find Engineering Solutions →Result Interpretation
Coffin-Manson-Based Thermomechanical Fatigue Life Estimator for SMD Solder Joints calculator computes Fatigue Life (Cycles to Failure) in 1 using the defined engineering formula and the input values provided. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Plastic Strain Range = 0.0015
- Fatigue Coefficient = 1000000
- Fatigue Exponent = 0.58
Expected Result:
- Fatigue Life (Cycles to Failure) = 244244845911.52
Engineering Interpretation:
Under the given input conditions, the calculated result is: Fatigue Life (Cycles to Failure) = 244244845911.52.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.
Formula / Method
Cycles to Failure = fatigue coefficient * pow((plastic strain range / 2.0), (-1.0 / fatigue exponent))Formula family: formula_electronics_smd_solder_joint_reliability_estimator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| delta_epsilon_pl | Plastic Strain Range | INPUT | Plastic Strain Range |
| C_f | Fatigue Coefficient | INPUT | Fatigue Coefficient |
| alpha | Fatigue Exponent | INPUT | Fatigue Exponent |
| fatigue_life | Fatigue Life (Cycles to Failure) | OUTPUT | Fatigue Life (Cycles to Failure) |
Calculation Steps
- Enter the plastic strain range in 1.
- Enter the fatigue coefficient in 1.
- Enter the fatigue exponent in 1.
- Step 1: Compute fatigue life (cycles to failure).
- Read the fatigue life (cycles to failure) (1) from the results.
Engineering Summary
Calculate Coffin-Manson-Based Thermomechanical Fatigue Life Estimator for SMD Solder Joints
Frequently Asked Questions
What does this calculator calculate?
The Coffin-Manson-Based Thermomechanical Fatigue Life Estimator for SMD Solder Joints calculator estimates Fatigue Life (Cycles to Failure) based on the input parameters you provide
Why is plastic strain range important in this calculation?
plastic strain range is used directly in the calculation of fatigue life (cycles to failure). Its effect on the result depends on the complete formula and the values of the other inputs.. It is a key parameter in the engineering formula used by this calculator
How should I interpret the result fatigue life (cycles to failure)?
The calculator outputs fatigue life (cycles to failure). The result is computed directly from the input values using the defined engineering formula
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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