MIL-PRF-46187A
foot. The tows shall have no waves greater than 0.030 inches wide. Tow splices
shall be considered a defect. Crimps, cured resin, cured matter, resin-starved
areas, wrinkles, and foreign materials are not allowed. Tape shall be parallel
within ± 0.5 degrees. Filaments that are not wetted shall be 1 per cent maximum
in any 144 square inches (0.093 square meters).
3.8
Identification marking.
The manufacturer's code (part) number, contract
number, serial number, date of manufacturer, national stock number, type of
material, and the number of this specification shall be permanently marked in the
location specified by the procuring activity (see 6.2).
4.
VERIFICATION
4.1
Verification alternatives.
Alternative test methods, techniques, or
equipment, including the application of statistical process control, tool
control, or cost effective sampling procedures may be proposed by the contractor.
Acceptable alternative verification approaches shall be identified in the
contract.
4.2 Classification of inspection.
The inspection requirements specified herein
are classified as follows:
a.
First article inspection (see 4.2.1)
b.
Conformance inspection (see 4.2.2)
4.2.1
First article inspection.
When required (see 3.1), the
first article
sample shall be examined for compliance with the requirements and
verifications
listed in table I and table II. All samples shall be produced with
materials and
processes proposed for use on the fabrication of structural
laminates.
Inspection shall be carried out by the contractor under Government
surveillance,
when specified (see 6.2).
4.2.2 Conformance inspection. Conformance inspection for the acceptance of the
fabrication of structural laminates shall be conducted on a recurring basis and
include the examinations and tests specified herein (see 4.2.2.1 and 4.2.2.2).
4.2.2.1
Material characterization.
When specified (see 6.2), the materials
described in this specification shall be analyzed for quality control purposes by
the following methods as applicable:
a.
Aniline titration
b.
Atomic absorption spectroscopy (AA)
c.
Differential scanning calorimetry (DSC)
d.
Dynamic mechanical analysis (DMA)
e.
Gas chromatography (GC)
f.
High performance liquid chromatography (HPLC)
These analyses shall be performed in accordance with material suppliers'
procedures which are used for production quality control, or in accordance with
users' procedures which are used for lot acceptance inspection of incoming
materials. The exact procedures to be used shall be agreed upon by supplier and
user.
4.2.2.2
Mechanical tests.
When specified (see 6.2), mechanical tests for
conformance shall consist of those tests listed in table I and table II.
4.2.2.3 Noncompliance. If a sample fails to pass conformance inspection, the
manufacturer shall notify the procuring activity and the cognizant inspection
activity of such failure, and take corrective action on the materials or
processes that are subject to the same failure. Acceptance and shipment of the
product shall be discontinued until corrective action, acceptable to the
procuring activity has been taken. After the corrective action has been taken,
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