• Flyer Jurojin [ PDF 744 KB ]

When verfifying the design life of vehicle components several questions arise:

• How many prototypes need to be tested? At what test duration?
• Either many short or few long tests?
• How to analyse the test results?
• Required statistical confidence level?
• Are different suppliers producing the same quality?
• Is it possible to expand a components homologation to a modified version?
• etc.

To deal with those problems it makes sense to deploy some advanced mathematical statistics. Next to established methods like Maximum Likelihood, probability papers and success runs, new methods for bootstrap-small-sample-corrections, the consideration of all knowledge from censored samples and adapted analysis of variance are useful.

The implementation of these advanced algorithms has produced the software package Jurojin. Leading guidelines have been:

1. Mathematical benchmark: optimal consideration of all information coming from the sample. Elaborate techniques help lowering the sampling efforts
2. Easy operability: inhibition threshold is lowered by guided handling of tidied up user interfaces. In addition results become more traceable
3. Modifiability: professional users define templates for the less experienced users

The scope of the software package Jurojin includes:

• Design of technical survival data and fatigue life experiments
• Data analysis with selected algorithms
• Graphical data reduction
• Consideration of small sample sizes
• Usage of all information coming from censored data
• Calculation of continuative experiments in case of refused homologation
• Analysis of variance