Stress Models Support in Relyence ALT

Relyence ALT includes 10 Stress Model options from the list of choices: Arrhenius, Eyring, General Eyring, General Log-Linear (Complex), General Log-Linear (No Transformation), General Log-Linear (Logarithmic), General Log-Linear (Reciprocal), Inverse Power Law, Temperature Humidity, or Temperature Nonthermal. The Relyence default setting is Arrhenius.

The following equations define the results for each of the Stress Models, where:

• L is a quantifiable life measure
• V, V1, V2, Vi, U are stresses
• A, B, C, D, B1, B2, fi, n, n1, n2, a0, a, a1, a2 are model parameters
• i is the number of stresses

Arrhenius

Eyring

General Eyring

General Log-Linear (Complex)

General Log-Linear (No Transformation)

General Log-Linear (Logarithmic)

General Log-Linear (Reciprocal)

Inverse Power Law

Temperature Humidity

The Temperature Humidity Stress Model requires two active stresses.

Temperature Nonthermal

The Temperature Humidity Stress Model requires two active stresses.