Method and Apparatus for Non-Destructive Evaluation of Materials

Methods and apparatus for characterizing composite materials for manufacturing quality assurance (QA), periodic inspection during the useful life, or for forensic analysis/material testing. System are provided that relate eddy-current sensor responses to the fiber layup of a composite structure, the...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Misc. Resources
Main Authors Goldfine, Neil J, Washabaugh, Andrew P, Lyons, Robert, Thomas, Zachary, Jablonski, David A, Martin, Christopher
Format Web Resource
LanguageEnglish
Published Hampton NASA/Langley Research Center 06.01.2015
Subjects
Aging (materials)
Composite materials
Composite structures
Destructive testing
Eddy current testing
Eddy currents
Impact damage
Inspection
Material properties
Nondestructive testing
Quality assurance
Structural damage
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Summary:Methods and apparatus for characterizing composite materials for manufacturing quality assurance (QA), periodic inspection during the useful life, or for forensic analysis/material testing. System are provided that relate eddy-current sensor responses to the fiber layup of a composite structure, the presence of impact damage on a composite structure with or without a metal liner, volumetric stress within the composite, fiber tow density, and other NDE inspection requirements. Also provided are systems that determine electromagnetic material properties and material dimensions of composite materials from capacitive sensor inspection measurements. These properties are related to the presence of buried defects in non-conductive composite materials, moisture ingress, aging of the material due to service or environmental/thermal exposure, or changes in manufacturing quality.
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