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Wednesday, June 27, 2007 - 1:30 PM
EMP1.1

Definition of Design Allowables for Aerospace Metallic Materials

J. Jackson, Battelle Columbus Labs, Columbus, OH

The MMPDS (Metallic Materials Properties and Development Standards) Handbook is the primary FAA-recognized source of metallic material design allowables for aerospace design.  This presentation outlines the current guidelines for the generation and analysis of data on metallic materials proposed for inclusion in the MMPDS Handbook.  The MMPDS Handbook requires that a product (alloy/temper/product form) have a public specification; typically an AMS specification, which defines the testing that must be done and minimum properties that must be met for lot release.  The statistical analyses that must be conducted to determine AMS specification minimums and MMPDS design allowable properties are performed by Battelle using SAE AMS guidelines or MMPDS guidelines, as appropriate.   An overview of the process and MMPDS guidelines for definition of a material’s design allowables will be given.

Summary: The MMPDS (Metallic Materials Properties and Development Standards) Handbook is the primary FAA-recognized source of metallic material design allowables for aerospace design. This presentation outlines the current guidelines for the generation and analysis of data on metallic materials proposed for inclusion in the MMPDS Handbook.