Struct FatigueLifePredictor 

pub struct FatigueLifePredictor {
    pub sn: BasquinCurve,
    pub sigma_ult: f64,
}

Fatigue life predictor combining a Basquin S-N curve with a Goodman mean-stress correction.

N = (σ_ar / A)^(1/B) where σ_ar = σ_a / (1 - σ_m / σ_ult)

Fields

sn: BasquinCurve

Basquin S-N curve.

sigma_ult: f64

Ultimate tensile strength for Goodman correction (Pa).

Implementations

impl FatigueLifePredictor

pub fn new(sn: BasquinCurve, sigma_ult: f64) -> Self

Create a new predictor.

pub fn predict_cycles(&self, sigma_a: f64, sigma_m: f64) -> f64

Predict cycles to failure for a given stress amplitude and mean stress.

Uses Goodman correction: σ_ar = σ_a / (1 - σ_m / σ_ult) then applies the Basquin S-N curve.

Trait Implementations

impl Clone for FatigueLifePredictor

fn clone(&self) -> FatigueLifePredictor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FatigueLifePredictor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.