Back to results
US 7,086,285 B2Granted
Nondestructive inspection method and system therefor
AssigneeGeneral Electric Company
InventorFrancis Alexander Reed
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeGeneral Electric Company
InventorFrancis Alexander Reed
Estimating the term…
A method and system for determining the fiber volume fraction of a composite structure. The system includes a unit for ultrasonically determining the porosity volume fraction in the article, and a unit for calculating the volume fraction of the fibrous reinforcement material in the article based on the porosity volume fraction in the article and the mass densities of the article and the fiber and matrix materials within the article. The method entails determining the mass density of the article, obtaining the mass densities of the fiber material and the matrix material, ultrasonically determining the porosity volume fraction in the article, and then calculating the volume fraction of the fibrous reinforcement material in the article based on the porosity volume fraction in the article, the mass density of the article, the mass density of the matrix material, and the mass density of the fiber material.
A method of ultrasonically inspecting an article comprising a composite material that contains porosity and a fibrous reinforcement material in a matrix material, the method comprising the steps of:
A system for ultrasonically inspecting an article comprising a composite material that contains porosity and a fibrous reinforcement material in a matrix material, the article having a mass density (ρa), the fibrous reinforcement material having a mass density (ρf), and the matrix material having a mass density (ρm), the system comprising:
Dependencies are inferred from the claim text.