Method for detecting protective layer on composite materials
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United States of America Patent
Stats
-
Aug 27, 1991
Grant Date -
N/A
app pub date -
Feb 17, 1989
filing date -
Feb 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A protective backing for composite sheets and a method of detecting the presence of protective backing within a stack of composite sheets. The protection of the surfaces of uncured composite sheets is provided by applying a protecting backing having a metal component to the composite sheet, which is removed prior to layup and curing of a composite laminate. Presence of the protective backing in a layup of composite sheets or a laminate made from the layup composite sheets may be detected by passing them through a sensing presence of an eddy current.
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