Why use this?

This NIST publication addresses a core problem in composites engineering: many handbook-based property databases report only averaged properties, while omitting the raw test data and environmental context needed to assess uncertainty. The paper defines three categories of data: raw test data, derived design allowables, and application-specific data supported by additional experiments.

A composites engineer should read it when building a material-qualification database, developing design allowables, or deciding how much test context must be retained for a property value to be defensible. It is especially relevant to laminate design, certification workflows, and statistical treatment of composite mechanical properties. [157]

Key Features

• Defines a three-category composite-data framework: raw data, design allowables, and application-specific data
• Preserves specimen preparation, test configuration, environment, and loading-history context
• Supports uncertainty estimation for composite design allowables
• Relevant to lamina properties, laminate design, and qualification testing
• Useful reference for building defensible composite-material databases