Out-of-mold inspection of fibrous preform

Details Out-of-mold inspection of fibrous preform Out-of-mold inspection of fibrous preform

2005-06-14

2005-06-14

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C425S149000

Reexamination Certificate

active

06907357

ABSTRACT:
A fibrous preform such as a braided or stamped fibrous is inspected for a defect prior to placing the preform in a molding cavity by flowing gas through regions of the preform while it is located outside the molding cavity, measuring gas pressure at the regions, and determining deviations in measured gas parameter among the regions. The deviations of the gas parameter for a particular preform are compared to background data that includes deviations of the gas parameter determined for previously tested performs such that a relatively large deviation for a particular preform is considered to identify that preform as a defective preform as opposed to an acceptable preform.

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