ALTA: Accelerated Life Testing Data Analysis Software Tool

Accelerated life tests... quantifiable resultsTM

Click to see a picture of the software interface...ReliaSoft's ALTA software is still the only commercially available software tool designed expressly for quantitative accelerated life testing data analysis using rigorous scientific analysis methods.

Quantitative accelerated life testing techniques in conjunction with powerful QALT data analysis methodologies give design and reliability engineers the power to significantly reduce test times, which can provide faster time to market, lower product development costs, lower warranty costs and other benefits!

Software Features

ALTA provides a comprehensive toolset for accelerated test planning and quantitative accelerated life testing data analysis, plots and reporting. The software tool is available in two versions:

ALTA Standard provides the life-stress relationship models required to analyze accelerated life test data with 1 or 2 constant stresses.

ALTA PRO offers advanced capabilities for analyzing accelerated life test data with up to 8 simultaneous stress types where stress is constant or varies with time!

Both versions provide 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.

Available Training

ReliaSoft offers two training courses that specifically address the subject of quantitative accelerated life testing data analysis (ALT analysis, QALT analysis) and related techniques. By combining a solid theoretical foundation with practical application examples and hands-on software training, these courses will give you the knowledge and skills you will need to successfully apply these useful methodologies to meet the specific challenges you face.

Applications and Benefits

Some of the potential applications and benefits for using quantitative accelerated life testing data analysis techniques and ReliaSoft's ALTA software tool include the ability 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.
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Software Capability Highlights

Data Types
(entered individually or in groups)

  • Complete (Failure Time)
  • Right Censored (Suspension Time)
  • Left Censored
  • Interval Censored
  • Free-Form

Life-Stress Relationship Models
(includes models for single stress, multiple stresses, constant stress or stress that varies with time)

  • Arrhenius
  • Eyring
  • Inverse Power Law
  • Temperature-Humidity
  • Temperature-NonThermal
  • Proportional Hazards
  • General Log-Linear (with user-defined transformations)
  • Cumulative Damage
  • Generalized Eyring

Lifetime Distributions

  • Weibull
  • Lognormal
  • Exponential

Analysis Methods

  • Maximum Likelihood (MLE)
  • Fisher Matrix Confidence Bounds

Calculated Results

  • Reliability
  • Probability of Failure
  • Mean Life
  • Warranty Time
  • B(X) Life
  • Acceleration Factor
  • Failure Rate

Plot Types

  • Probability
  • Reliability vs. Time
  • Unreliability vs. Time
  • Failure Rate vs. Time
  • pdf Plot
  • Life vs. Stress
  • Standard Deviation vs. Stress
  • Acceleration Factor vs. Stress
  • Standardized Residuals
  • Cox-Snell Residuals
  • Standardized Residuals vs. Fitted Values

Degradation Analysis

  • Linear
  • Exponential
  • Power
  • Logarithmic
  • Gompertz
  • Lloyd-Lipow

Accelerated Test Plans

  • 2 Level Statistically Optimum Plan
  • 3 Level Best Standard Plan
  • 3 Level Best Compromise Plan
  • 3 Level Best Equal Expected Number Failing Plan
  • 3 Level 4:2:1 Allocation Plan

Other Integrated Statistical Utilities

  • Distribution Wizard
  • Parameter Experimenter
  • Monte Carlo Data Simulation
  • Likelihood Ratio Test
  • Data Set Comparison Wizard
  • Design of Reliability Tests
  • SimuMatic®
  • Quick Statistical Reference

Advanced Plotting Tools

  • Multi-Plots
  • Side-by-Side Plots
  • 3-Dimensional Plots
  • RS Draw Metafile Graphics Editor

Custom Analysis and Reporting Tools

  • Spreadsheets
  • Report Templates
  • Function Wizard

Import Types

  • Microsoft Excel® Files
  • Text Files
  • Analyses from ALTA 1 and 6

File Output

  • Microsoft Excel®
  • Save plots as metafiles (*.wmf)

Integration

Available Services

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