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Bathtub Software

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Robust Software

SuperSMITH®

SuperSMITH® software is engineered for reliability and statistical analysis for predicting life, safety, survivability, risk, cost and warranty claims, substantiation and accelerated testing by using Weibull, log normal, Crow-AMSAA, probit and Kaplan-Meier models.

SuperSMITH® Version 6.0 (September 2022)

SuperSMITH 6.0  is a major  upgrade from the previous 5.0DT, with improved user interface, program organization,  and added features.

User Interface.  

  • Now with larger icons for touch screen.  Improved keyboard options.  
  • User customization for menu styles. and high resolution monitors.  
  • Most tasks/menu items can now be selected with keyboard commands, as well as touch/mouse.  
  • Start up size can be full or midsize
  • Better multi-monitor compatibility
  • Improved Print/Export menu
  • Improved Sample (Monte Carlo) menu for mixture sampling
  • Plot colors can be customized to any RGB color.  Color schemes can be saved.

Program Organization

  • Additional language support (Now 15 languages!)
  • Visual and YBath now call Smithw.exe with flags, rather than stand alone programs.  This reduces the hard drive space required for programs.
  • Common menu structure and plots  among Weibull, Visual, and YBath
  • Easier to plot mixtures from the Weibull program
  • Major update in YBath analysis techniques.
  • Weibull Dice (For class exercise) now built in to main program

New Features

  • Logbook  allows more detailed note taking, and saving intermediate reports and tables with your data file.
  • Updated Weibull Library allows searching a reference file by key words
  • Missing Data.   Supplier didn't tell you how many parts they didn't ship that were out of limits, or cherry-picked from the middle?  Now you can estimate how many pieces were in those missing areas.  (Based on paper presented at RAMS 2021)


Log4J Vulnerability questions?

Log4J  is a Java based API  used with Apache web servers.  SuperSMITH does not use Java and does not use Log4J. SuperSMITH  does not send/receive data on networks, but can open and save files on network drives.  Your system may use Log4J to track usage, but the potential vulnerability is with your system, not SuperSMITH.

SuperSMITH software is the only software compatible with the industry leading Weibull handbook written by Dr. Robert Abernethy.  

About Us

Fulton Findings

Fulton Findings Logo

SuperSMITH®  software is engineered for reliability and statistical analysis for predicting life, safety, survivability, risk, cost and warranty claims, substantiation and accelerated testing by using Weibull, log normal, Crow-AMSAA, probit and Kaplan-Meier models.

SuperSMITH (TM) software is the only software compatible with the industry leading Weibull handbook written by Dr. Robert Abernethy.  

Bathtub Software

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One of the issues with real world data is that there may be mixtures of failure modes, suppliers, or duty cycles.  Consider an automotive manufacturer tracking tire warranty.  Customers drive different amounts each month, on different roads, and have different road hazards.  We developed some of the first equations to model these mixtures, AND developed algorithms to fit these models to your data.  We have also done extensive research on the PVE Goodness of Fit technology which is proprietary to SuperSMITH.  Behind the scenes, we also work on improved algorithms to compute various items. 

Software Inclusions

Weibull Analysis Includes

Data Problems and Deficiencies include

Data Problems and Deficiencies include

  • Plotting the data and interpreting the plot
  • Failure forecasting and prediction 
  • Evaluating corrective action plans
  • Test substantiation for new designs with minimum cost
  • Maintenance planning and cost effective replacement strategies
  • Spare parts forecasting
  • Warranty analysis and support cost predictions 
  • Controlling production processes
  • Calibration of complex design systems
  • Recommendations to management in response to service problems

Data Problems and Deficiencies include

Data Problems and Deficiencies include

Data Problems and Deficiencies include

  • Censored or suspended data
  • Mixtures of failure models
  • Nonzero time origin
  • Unknown ages for successful units
  • Extremely small samples (as small as one failure)
  • No failure data
  • Early data missing
  • Inspection data, both interval and probit

Failure Types Include

Math Modeling for System Analysis Include

Math Modeling for System Analysis Include

  • Development, production and service
  • Mechanical, electronic, materials, and human failures
  • Nature; lightning strikes, foreign object damage, human error, woodpecker holes in power poles
  • Quality control, design deficiencies, defective material
  • Warranty claims

Math Modeling for System Analysis Include

Math Modeling for System Analysis Include

Math Modeling for System Analysis Include

  • Explicit models for independent failure modes
  • Monte Carlo simulation for dependent failure modes
  • Reliability growth, repairability, and management tracking using Crow-AMSAA models
  • Exponential, Binomial and Poisson models
  • Warranty claims models
  • Production process control models

Weibull Engineering (WE)

Reasons to model the variability of your measurements

1) WE produces better models with smaller amounts of input data.


2) WE provides quantitative results with numbers instead of results based only on opinions.


3) WE plots illustrate the variability graphically making such results easier to interpret.


4) WE with Monte Carlo simulation yields the best goodness-of-fit indicator for graphical solution.


5) WE makes decisions easier for reliability-centered-maintenance (RCM) and condition-based-monitoring (CBM)


6) WE extensions like Abernethy Risk and Barringer Process Reliability help with decision-making.


7) WE for test planning gives the lowest-cost and/or the shortest-schedule plan for design substantiation.


8) WE encompasses accelerated testing and step-stress testing to minimize inception-to-market time 

9) WE can add upper and lower bounds on nominal results using confidence estimates.


10) WE enables comparison between different options for significant difference, like between new and old designs.


11) WE includes other models and other methods like reliability growth trending for program management.

Learn More

Fulton Findings software is engineered for reliability and statistical analysis for predicting life, safety, survivability, risk, cost and warranty claims, substantiation and accelerated testing by using Weibull, log normal, Crow-AMSAA, probit and Kaplan-Meier models.


Fulton Findings software is the only software compatible with the industry leading Weibull handbook written by Dr. Robert Abernethy.

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