|
Same
|
Features and
functionality of previous versions
|
Both versions include all functionality available in ALTA 1.0. |
|
Enhanced
|
Work environment and interface
|
Intelligent,
intuitive and flexible interface based on our acclaimed Weibull++
interface.
Both versions were designed for use in Windows 95, 98, NT, 2000 and
XP.
|
|
New |
Integrated with Weibull++ 6 (if installed) |
Yes |
Yes |
|
Same |
Complete and censored (suspended) data
|
Yes
|
Yes
|
|
Same
|
Underlying life distributions
|
-
Weibull
-
Lognormal
-
Exponential
|
-
Weibull
-
Lognormal
-
Exponential
|
|
Enhanced
|
Life-stress relationships
|
-
Arrhenius
-
Eyring
-
Inverse Power Law
-
Temp-Humidity
-
Temp-NonThermal
|
-
Arrhenius
-
Eyring
-
Inverse Power Law
-
Temp-Humidity
-
Temp-NonThermal
-
Proportional Hazards
-
Generalized Log-Linear (with user-defined transformations for
creating models with up to eight simultaneous stresses)
-
Cumulative Damage
|
|
Same
|
Maximum
Likelihood Estimation (MLE) for parameter estimation
|
Yes
|
Yes
|
|
Enhanced
|
Simultaneous stresses (time-independent)
|
2
|
8
|
|
New
|
Time-varying stresses
|
No
|
Yes
|
|
New |
Integrated Stress Profile Explorer to define and manage
time-dependent stress profiles |
No |
Yes |
|
New
|
Allow time-varying use stress levels
|
No
|
Yes
|
|
New
|
Allow user-defined transformation on stress relations (Generalized
Log-Linear model)
|
No
|
Yes
|
|
Enhanced
|
Quick
Calculation Pad (QCP) for instant reliability results based on your
analyses
|
|
|
|
Enhanced
|
Confidence intervals on plots and results
|
Yes
|
Yes
|
|
Enhanced |
Automated 2D plots (for different stress levels, including use
stress level if applicable) |
-
Probability
-
Reliability
-
Probability of Failure
-
Failure Rate
-
Pdf plots
-
Life vs Stress
-
Acceleration Factor
-
Sigma vs stress
-
Standardized Residuals
-
Cox Snell Residuals
-
Standard vs Fitted
|
-
Probability
-
Reliability
-
Probability of Failure
-
Failure Rate
-
Pdf plots
-
Life vs Stress
-
Acceleration Factor
-
Sigma vs stress
-
Standardized Residuals
-
Cox Snell Residuals
-
Standard vs Fitted
|
|
Enhanced |
Automated 3D plots |
-
Reliability
-
Pdf
-
Unreliability (cdf)
-
Likelihood Function
-
Failure Rate
|
-
Reliability
-
Pdf
-
Unreliability (cdf)
-
Likelihood Function
-
Failure Rate
|
|
New |
Side-by-Side Plots (view/print up to 9 plots at one time) |
Yes |
Yes |
|
New |
Option to represent suspension data points on plots |
Yes |
Yes |
|
New |
Option to display the number in a group on plots with grouped data |
Yes |
Yes |
|
New |
Ability to display target reliability (point or lines) on plots |
Yes |
Yes |
|
Enhanced |
RS Draw to annotate and customize plots |
Yes |
Yes |
|
Enhanced
|
General Spreadsheet with Function Wizard and Chart Wizard for
custom analyses |
Yes |
Yes |
|
Enhanced |
Report Work Center with Function Wizard for customized reports |
Yes |
Yes |
|
New |
Automated standard reports |
Yes |
Yes |
|
Enhanced |
Monte Carlo data generation for the selected distribution, model
and stress levels |
Yes |
Yes |
|
New |
Monte Carlo data generation for time-varying stresses |
No |
Yes |
|
Same
|
Quick
Statistical Reference (QSR) for common statistical functions (like
median ranks, chi-squared values)
|
Yes
|
Yes
|
|
New
|
Accelerated
degradation data analysis
|
Yes
|
Yes
|
|
New
|
Distribution Wizard for goodness-of-fit tests
|
Yes
|
Yes
|
|
New |
Alter parameters with auto re-calculate (fix parameter values) |
Yes |
Yes |
|
New |
Hypothesis testing for common shape parameter |
Yes |
Yes |
|
New |
Comparison Wizard, Stress-Strength Interference |
Yes |
Yes |
|
Enhanced
|
File import wizard to import data from Excel and other delimited
files |
Yes |
Yes |
|
New |
Analyze data with indicator variables (stress is on/off, lot,
etc.) |
No |
Yes |
|
New |
Hypothesis testing and quantification of stress effect |
Yes |
Yes |
|
Enhanced
|
Complete printed and on-line user documentation |
 |
|
Enhanced |
Accelerated life testing analysis theory textbook |
 |
|
New |
On-line theory help for instant information on the distribution,
model or plot you are using |
Yes |
Yes |
|
New |
Specify Stress View |
Yes |
Yes |
Version
7
