VERSION 10.5
by Applications Research, Inc.
4927 St.Croix Ave. Golden Valley, MN 55422 for information call - Phone (763) 521-0217
The Weibull distribution is unique in that it takes on the shape which best fits the data. The more typical situation is where data is "force fitted" into a standard type of distribution, such as the Normal, Exponential, or other. In other words, the Weibull distribution has the ability to reveal, rather than mask, the correct distribution of the data. For example, a Weibull shape factor of 1.00 represents an exponential distribution. If data you've assumed to be distributed exponentially comes out with a Weibull shape factor of about 3.0, you'd best revisit your assumption. A Weibull shape factor of about 3.25 or above represents an approximately normal distribution. In addition, use of any of the Weibull analysis routines to accomplish estimates of population characteristics, is simply a recognition of the fact that populations are rarely 100% normal, binomial, or exponential and so on.
Weibull-Ease's most unique feature is a routine to simplify and rationalize a series of tedious calculations to evaluate and quantify an essentially quite simple idea. That is, whenever the demand put upon an individual unit of the population being evaluated, exceeds its capability, it fails. In addition, Weibull-Ease's capabilities enable you to accomplish the major critical functions of the more well known Weibull routines.
The ultimate goal of this effort is to match two Weibull distributions - -
1.) Unit Capability (or strength) Distribution
2.) Expected Customer Demand (or stress) Distribution
Capability or Strength
Demand or Stress
(Engineering or Test data)
(Market Research Data)
- to generate a third distribution consisting
of those units whose
individual use has exceeded their respective capabilities (or life).
This method can be applied to most mechanical or electrical products, from light bulbs bulbs to lawn mowers, to automobiles and battle tanks. This software also can be quite useful in helping to coordinate the marketing and engineering efforts in an organized, comprehensible, and workable manner. For example, a proper way to specify consumer product life can be by identifying two points on a maximum allowable failure schedule. This then requires identification of say, 1% failure in the first year and 25% failure in the fifth year. This is a figure which would normally be supplied by marketing and/or market research departments. This is also the type of input needed to define the Demand (or Stress) distribution. It is then compared with Capability data determined by the Engineering and Test Departments.
Finally, please note below that our printouts are complete stand-alone reports that include the shape of the distribution, plus the standard statistical parameters. They go a step further in that they also include the numerical values of the confidence limits at each selected reliability level. We believe this to be a unique feature that stands alone in this market.
The program generates the major standard distributions. These are Weibull, normal, log-normal, and exponential. They are all documented in a manner similar to that shown above and in such way as to allow convenient, clear, presentation to both technical and/or non-technical audience. We trust this system will work out well for your needs and we look forward to your feedback.
The demo program is completely functional and includes all the above discussed capabilities, including the printouts. Its only constraint is that it has a 30 day time limit.
IMPORTANT NOTE If you experience any problem whatsoever with the download or the program, please call us right away. Most likely, we can straighten out the problem, or answer any question, in short order. Please don't hesitate to do this. You will only be doing us a favor and we will appreciate it.
Click here for the DEMO PROGRAM.
Applications Research, Inc.
4927 St.croix Ave. Golden Valley, MN 55422 for information call - Phone (763) 521-0217