ALTADataSet.AddStressDefinition

Adds a stress to the data set, using the specified name of the stress, the stress transformation (if any) and the use stress level. The number of stress values used in subsequent calls to AddFailure, AddSuspension, etc. must be equal to the number of stress definitions in the data set (e.g., before you can add a failure time obtained with two stresses, you must add two stress definitions).

Method Syntax

AddStressDefinition( ByVal Name As String, Optional ByVal StressRelation As ALTASolverLSR = ALTASolverLSR.Exponential, Optional ByVal UseStress As Double = 1)

Parameters

Name The name of the new stress definition

StressRelation The relation to set the new stress definition

UseStress The use stress level

Usage Example

Declare the ALTADataSet. See New ALTADataSet for additional details.

       Dim ALTADS as New ALTADataSet

Add a new stress definition.

       ALTADS.AddStressDefinition("NewStress1")

Declare an ALTAStressProfile. See ALTAStressProfile for additional details.

       Dim sp = New ALTAStressProfile("Profile1")
       sp.RepeatCycle = True
       sp.AddSegment(1, 250)
       sp.AddSegment(2, 300)
       sp.AddSegment(3, 400)

Add the stress profile

       ALTADS.AddStressProfile(sp)

Add values to the raw data. See AddFailure for additional details. Because one definition was added, only one stress is needed.

       ALTADS.AddFailure(1, 1, sp)
       ALTADS.AddFailure(2, 1, sp)
       ALTADS.AddFailure(3, 1, sp)