ReliaSoft’s ALTA software provides an intuitive and user-friendly way to exploit complex and powerful mathematical models for quantitative accelerated life testing (QALT) data analysis, including life-stress relationships required to analyse data with up to 8 simultaneous stress types where stress is constant or varies with time.
Quantitative accelerated life testing (QALT) data analysis techniques and ReliaSoft’s ALTA software tool enable you to:
- Understand and quantify the effects of stress (or other factors) on product life.
- Design accelerated tests that will be the most effective to achieve desired objectives.
- Significantly reduce the test time required to obtain reliability metrics for a product, which can result in faster time-to-market, lower product development costs and improved designs.
Unlike qualitative accelerated tests (such as HALT/HAST), which precipitate failures in order to identify failure modes, QALT produces time-to-failure information that can be used to estimate the expected life of the product under normal use conditions.
Data Types and Stress Types
ALTA’s data entry spreadsheets support complete, right censored (suspended), interval or left censored data, entered individually and in groups. Models are available that can analyze up to 8 stress types.
Life-Stress Relationship Models
ALTA supports data analysis with the Weibull, lognormal and exponential distributions. Many life-stress relationships are available, optionally including advanced multi-stress and time-dependent stress models.
Parameter Estimation and Calculated Results
ALTA uses Maximum Likelihood Estimation (MLE) for parameter estimation. Reliability results such as reliability given time, mean life, acceleration factor and BX% life are quickly calculated based, including confidence bounds for parameters, calculated results and plots where applicable.
Plots and Automated Reports
ALTA automatically generates a complete array of reliability plots, with customisable settings. Plots can be annotated and exported as graphic files for use in your reports and presentations. Automated report generation is also available.
Accelerated Test Planning Utility
ALTA offers a choice of methods for designing an effective one-stress or two-stress accelerated life test plan. Based on your inputs about the expected failure behavior and available test time, the utility recommends the stress levels and the most effective allocation of units to be tested at each level.
ReliaSoft Synthesis is an integrated platform that can combine any or all of ReliaSoft’s best-in-class reliability engineering applications into a powerful, easy-to-deploy, enterprise-capable, integrated reliability solution.