Accelerated Life Testing, formerly known as ALTA software, is an advanced module application available in ReliaSoft Weibull++ for accelerated test planning and quantitative accelerated life testing data analysis. It supports a complete array of utilities for designing accelerated life tests, evaluating the fit of the model, calculating reliability metrics, generating plots and performing related statistical analyses. Additionally, it provides the life-stress relationships required to analyze accelerated life test data with up to 8 simultaneous stress types, where stress is constant or varies with time.
| Standard | PRO | |
| Life Distributions | Both versions support Weibull, lognormal and exponential. | |
| Life-Stress Relationships |
| All of the ALTA Standard models plus:
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| Parameter Estimation | Both versions provide Maximum Likelihood Estimation (MLE). | |
| Stresses | Provides models that can analyze data with 1 or 2 stresses that do not vary with time. |
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| Confidence Intervals | Both versions provide confidence intervals on calculated results and plots. | |
| Analyze data with indicator variables (stress is on/off, lot, etc.) | No | Yes |
| Monte Carlo Data Generation | Available for supported models only. | Available for all models, including those with multiple and/or time-dependent stresses. |
| Accelerated Test Plan Utility | Both versions provide access to the accelerated test planning utility. | |
Weibull++'s Accelerated Life Testing module is the best package I've seen for accelerated life testing.
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