Hi, all technet readers!
Here is my question.
In case of using the expired prepreg stored over three months, would you
inform me of effective test method to verify if the expired prepreg is
proper for using?
Our test method is
1. Checking resin content & gel time at first, and then
2. Checking  the pressed prepreg' thickness whether it is within spec or
not.
3. Checking the occurrence of weave texture & weave exposure.

Any remarks will be appreciated.

Regards
Jay Ju

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