ABBA (A & B-basis)
The ABBA program (A- & B-Basis Analysis) performs statistical analysis of the experimental strength data and estimates A- & B-basis values using methodology described in MIL-HDBK-17 1F .
The ABBA program calculate A- & B-basis values from composite material strength data.A-basis and B-basis allowables are statistically based tolerance bounds of material strength data:
A-basis or T99: At least 99% of the population of material values is expected to equal or exceed this tolerance bound with 95% confidence.
B-basis or T90: At least 90% of the population of material values is expected to equal or exceed this tolerance bound with 95% confidence.
For composite materials, experimental data from different panels can be treated as batches. k-sample Anderson-Darling test is used to determine whether the data should be treated as structured or unstructured.
Unstructured data are modeled using a Weibull, normal or lognormal distributions. Structured data are modeled using analysis of variance (ANOVA) method. Mean value, standard deviation, and coefficient of variation are also calculated.
For purchasing full version please contact: email@example.com
Price: 100 USD