SAMPE Journal - March/April 2020 - 23
better bond. CT scans, Figure 17, of the part shows
the areas near the surface of the part having better
bonds, internal there were still areas that did not
bond. The scans showed there were some large
voids, which could not be detected at the press in
rough cut sections.
Figure 16. Back filling
of insert.
Continuing with the development new inserts
were made with a reduced ply count as initial
testing showed the inserts were over designed. The
thinner insert effectively increased the side wall
thickness of the molded part. The theory was this
would reduce flow hesitation and increase melt
temperature along the composite insert to create a
Manufacturing parameter of Design Iteration 2
The part was redesigned, and the tool was
modified accordingly. Iteration 1 trials provided an
indication of manufacturing process direction. The
conclusion pointed to a higher melt temperature,
a moderate temperature on the insert, a high
injection speed and a minimal pack pressure.
We stabilized the process and ran a simplified
DOE investigating injection speed and pack time.
A CT Scan of design iteration 2 is shown in
Figure 18. Voids have been significantly reduced,
overall bond is improved, some insert deformation
is still observed as are some area we there is no
bond. Both conditions are deep in the part away
from critical stress areas. A review of process
conditions indicates these conditions can most
likely be further be reduced.
Complete Ultrasonic Systems Integration
Ultrasonic inspection systems for your
high-performance materials
Mult-axis immersion tanks and gantries
New construction and system upgrades
Conventional and phased array inspection
C-scan and full waveform compatible
Matec Instrument Companies, Inc. | Northborough, MA | 1-508-393-0155 | sales@matec.com | matec.com
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23
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SAMPE Journal - March/April 2020
Table of Contents for the Digital Edition of SAMPE Journal - March/April 2020
Table of Contents
SAMPE Journal - March/April 2020 - Cover1
SAMPE Journal - March/April 2020 - Cover2
SAMPE Journal - March/April 2020 - Table of Contents
SAMPE Journal - March/April 2020 - 2
SAMPE Journal - March/April 2020 - 3
SAMPE Journal - March/April 2020 - 4
SAMPE Journal - March/April 2020 - 5
SAMPE Journal - March/April 2020 - 6
SAMPE Journal - March/April 2020 - 7
SAMPE Journal - March/April 2020 - 8
SAMPE Journal - March/April 2020 - 9
SAMPE Journal - March/April 2020 - 10
SAMPE Journal - March/April 2020 - 11
SAMPE Journal - March/April 2020 - 12
SAMPE Journal - March/April 2020 - 13
SAMPE Journal - March/April 2020 - 14
SAMPE Journal - March/April 2020 - 15
SAMPE Journal - March/April 2020 - 16
SAMPE Journal - March/April 2020 - 17
SAMPE Journal - March/April 2020 - 18
SAMPE Journal - March/April 2020 - 19
SAMPE Journal - March/April 2020 - 20
SAMPE Journal - March/April 2020 - 21
SAMPE Journal - March/April 2020 - 22
SAMPE Journal - March/April 2020 - 23
SAMPE Journal - March/April 2020 - 24
SAMPE Journal - March/April 2020 - 25
SAMPE Journal - March/April 2020 - 26
SAMPE Journal - March/April 2020 - 27
SAMPE Journal - March/April 2020 - 28
SAMPE Journal - March/April 2020 - 29
SAMPE Journal - March/April 2020 - 30
SAMPE Journal - March/April 2020 - 31
SAMPE Journal - March/April 2020 - 32
SAMPE Journal - March/April 2020 - 33
SAMPE Journal - March/April 2020 - 34
SAMPE Journal - March/April 2020 - 35
SAMPE Journal - March/April 2020 - 36
SAMPE Journal - March/April 2020 - 37
SAMPE Journal - March/April 2020 - 38
SAMPE Journal - March/April 2020 - 39
SAMPE Journal - March/April 2020 - 40
SAMPE Journal - March/April 2020 - 41
SAMPE Journal - March/April 2020 - 42
SAMPE Journal - March/April 2020 - 43
SAMPE Journal - March/April 2020 - 44
SAMPE Journal - March/April 2020 - 45
SAMPE Journal - March/April 2020 - 46
SAMPE Journal - March/April 2020 - 47
SAMPE Journal - March/April 2020 - 48
SAMPE Journal - March/April 2020 - 49
SAMPE Journal - March/April 2020 - 50
SAMPE Journal - March/April 2020 - 51
SAMPE Journal - March/April 2020 - 52
SAMPE Journal - March/April 2020 - 53
SAMPE Journal - March/April 2020 - 54
SAMPE Journal - March/April 2020 - 55
SAMPE Journal - March/April 2020 - 56
SAMPE Journal - March/April 2020 - 57
SAMPE Journal - March/April 2020 - 58
SAMPE Journal - March/April 2020 - 59
SAMPE Journal - March/April 2020 - 60
SAMPE Journal - March/April 2020 - 61
SAMPE Journal - March/April 2020 - 62
SAMPE Journal - March/April 2020 - 63
SAMPE Journal - March/April 2020 - 64
SAMPE Journal - March/April 2020 - Cover3
SAMPE Journal - March/April 2020 - Cover4
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