SAMPE Journal - January/February 2016 - 9
FEATURE ARTICLE
Figure 5.
Typical SQRTM curing cycle.
was chosen for the skins while tape has been used for
the co-cured stringers.
The tool was designed to be able to manufacture the
four composite parts in one single mould/injection. A
cross-section of the tool is showed Figure 4.
press. The parts were injected with 8552 resin and
cured with the cycle shown in Figure 5.
After cooling and de-moulding, a visual inspection
of the cured parts revealed a really exceptional part
quality as shown by Figures 6a through 6d.
Dimensional inspection was performed based upon
Demonstrator Manufacturing Results
ultrasonic measurements and micrographics. Over
After ply cutting-off and laying-up of the pre-formed more than 150 thickness control points selected, no
plies, the mandrels were positioned on the tool and the value was found out of the allowed +/-8% tolerance
mould was closed before its installation in the SQRTM around the nominal thickness.
Furthermore, the micrographic cuts analysis has
confirmed that the demonstrators
presented a very good level of
internal quality (skin, stringers,
spar and joggle areas) as shown in
Figures 7a through 7d:
-No delamination,
-Good compaction of the plies (even
at difficult areas such as radius in
spars, stringers, joggles, ...)
-Good filling of the stringers with
the noodle fillers,
Figure 6a. Lower skin quality.
Figure 6b. Upper skin quality.
-Good filling of the joggles with the
fillers,
-Thicknesses compliant with the
requirements,
-Spar radii and stringers radii
compliant with the requirements,
Figure 6d.
-No internal ply waviness.
Trailing edge quality.
The C-scan US NDT reports have
confirmed the fully satisfactory
internal quality of the produced
parts for what concerns porosity
and inclusion.
Figure 6c. D-nose quality.
SAMPE Journal, Volume 52, No. 1, January/February 2016
9
Table of Contents for the Digital Edition of SAMPE Journal - January/February 2016
Contents
SAMPE Journal - January/February 2016 - Cover1
SAMPE Journal - January/February 2016 - Cover2
SAMPE Journal - January/February 2016 - Contents
SAMPE Journal - January/February 2016 - 2
SAMPE Journal - January/February 2016 - 3
SAMPE Journal - January/February 2016 - 4
SAMPE Journal - January/February 2016 - 5
SAMPE Journal - January/February 2016 - 6
SAMPE Journal - January/February 2016 - 7
SAMPE Journal - January/February 2016 - 8
SAMPE Journal - January/February 2016 - 9
SAMPE Journal - January/February 2016 - 10
SAMPE Journal - January/February 2016 - 11
SAMPE Journal - January/February 2016 - 12
SAMPE Journal - January/February 2016 - 13
SAMPE Journal - January/February 2016 - 14
SAMPE Journal - January/February 2016 - 15
SAMPE Journal - January/February 2016 - 16
SAMPE Journal - January/February 2016 - 17
SAMPE Journal - January/February 2016 - 18
SAMPE Journal - January/February 2016 - 19
SAMPE Journal - January/February 2016 - 20
SAMPE Journal - January/February 2016 - 21
SAMPE Journal - January/February 2016 - 22
SAMPE Journal - January/February 2016 - 23
SAMPE Journal - January/February 2016 - 24
SAMPE Journal - January/February 2016 - 25
SAMPE Journal - January/February 2016 - 26
SAMPE Journal - January/February 2016 - 27
SAMPE Journal - January/February 2016 - 28
SAMPE Journal - January/February 2016 - 29
SAMPE Journal - January/February 2016 - 30
SAMPE Journal - January/February 2016 - 31
SAMPE Journal - January/February 2016 - 32
SAMPE Journal - January/February 2016 - 33
SAMPE Journal - January/February 2016 - 34
SAMPE Journal - January/February 2016 - 35
SAMPE Journal - January/February 2016 - 36
SAMPE Journal - January/February 2016 - 37
SAMPE Journal - January/February 2016 - 38
SAMPE Journal - January/February 2016 - 39
SAMPE Journal - January/February 2016 - 40
SAMPE Journal - January/February 2016 - 41
SAMPE Journal - January/February 2016 - 42
SAMPE Journal - January/February 2016 - 43
SAMPE Journal - January/February 2016 - 44
SAMPE Journal - January/February 2016 - 45
SAMPE Journal - January/February 2016 - 46
SAMPE Journal - January/February 2016 - 47
SAMPE Journal - January/February 2016 - 48
SAMPE Journal - January/February 2016 - 49
SAMPE Journal - January/February 2016 - 50
SAMPE Journal - January/February 2016 - 51
SAMPE Journal - January/February 2016 - 52
SAMPE Journal - January/February 2016 - 53
SAMPE Journal - January/February 2016 - 54
SAMPE Journal - January/February 2016 - 55
SAMPE Journal - January/February 2016 - 56
SAMPE Journal - January/February 2016 - 57
SAMPE Journal - January/February 2016 - 58
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SAMPE Journal - January/February 2016 - 60
SAMPE Journal - January/February 2016 - 61
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SAMPE Journal - January/February 2016 - 64
SAMPE Journal - January/February 2016 - 65
SAMPE Journal - January/February 2016 - 66
SAMPE Journal - January/February 2016 - 67
SAMPE Journal - January/February 2016 - 68
SAMPE Journal - January/February 2016 - Cover3
SAMPE Journal - January/February 2016 - Cover4
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