Fatigue - Power Spectrum Density (PSD)

View Product Datasheet (PDF)

Product Highlights:

·         Evaluates various mode shapes for the fatigue life of composite and metal structures subject to dynamic loads of constant amplitude and vibration frequencies above 1/3 natural frequencies.

·         Determines the fatigue failure initiation site in composite and metal structures under the applied cyclic loading.

·         For each stress level, the degree of cumulative damage incurred is calculated from the S-N curve, which can be derived from tests or found in the open literature.

·         An efficient multi-factor interaction model (MFIM) can be used to account for a broad range of factors that affect the fatigue life of a structure such as temperature and surface finish.

·         Evaluate material S-N curve degradation with increase in modal frequencies.

Applications/Benefits:

·         Precisely evaluates the service life of composite or metal structures subject to static and dynamic loads of constant amplitude.

·         Predicts the fatigue failure initiation site and its development in aerospace, automotive and other composite structural components.