SEDL / STP / STP1003-EB / STP10024S

Statistical Methods for Calculating Material Allowables for MIL-HDBK-17

Rust, SW
Senior research statistician and research statistician, Battelle Columbus Division, Columbus, OH

Todt, FR
Senior research statistician and research statistician, Battelle Columbus Division, Columbus, OH

Harris, B
Professor, University of Wisconsin, Madison, WI

Neal, D
Research mathematician and research statistician, Army Materials Technical Laboratory, Watertown, MA

Vangel, M
Research mathematician and research statistician, Army Materials Technical Laboratory, Watertown, MA

Pages: 14    Published: Jan 1989

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Abstract

Over the past several years, there has been an on-going effort to develop standard statistical guidelines for MIL-HDBK-17 (Composite Materials for Aircraft and Aerospace Applications). These guidelines are presented here in abbreviated form. The procedures employed fall into two major categories: (1) general statistical procedures and (2) specific statistical procedures for calculating material allowables. The first category includes the following procedures: a k-sample Anderson-Darling test for equality of populations, Lehmann's test for equality of variance, and Anderson-Darling tests for normality, lognormality and Weibullness. The second category includes the following procedures for calculating material allowables: a normal procedure in the presence of batch-to-batch variation and two-parameter Weibull, normal, lognormal, and non-parametric procedures for single populations.