ppt - GLAST at INFN-Pisa

GLAST LAT Project
title - MRB 10 Mar 2005
MECHANICAL TESTS MISSING ON
SIDEWALL –Y, SN 004
MRB Meeting – 10 March 2005
R. BAGAGLI
1
GLAST LAT Project
title - MRB 10 Mar 2005
Description and reference documentation
• Description of nonconformance
– Mechanical Tests missing
• Instances
– Not available
• Root cause
– Schedule
• Reference NCR List
– NCR n°434
R. BAGAGLI
2
GLAST LAT Project
title - MRB 10 Mar 2005
References
1° SHIPMENT
2° SHIPMENT
SIDEWALLS S/N /
TEST ID
001
002
003
004 -X,+X, +Y
004 -Y
PREPREG ID TEST
C/O PLYFORM
A 04060 (SF-YS90A-75), A 04061 (K13D2U/CE3)
CERTIFICATE OF
CONFORMANCY
MECHANICAL ID TEST
C/O PLYFORM
T 04024
N/A
PROCESS ID TEST
C/O PLYFORM
DRB DATE ID CERT.
NUMBER C/O
PLYFORM
1.
2.
P 04142 / T 04024
30/12/2004
P 04141
28/01/2005
09/03/2005
P XXXXX
09/03/2005
THE FIRST SHIPMENT CONTAINS THE FOLLOWING
LOTS: 04-916; 04-913
THE SECOND SHIPMENT CONTAINS THE FOLLOWING
LOTS: 04-1560; 04-1561; 04-1914; 04-1568
R. BAGAGLI
3
GLAST LAT Project
title - MRB 10 Mar 2005
Physical Properties of Prepreg (1° Shipment)
1° SHIPMENT
REFERENCE
PROPERTIES
PLYFORM
COI
Measured Value
Measured Value
VALUE
A 04060
(K13D2U)
N/A
201,20
202,30
N/A
N/A
>175°
201,60
199,20
179,40
167,40
N/A
146,20
146,00
N/A
N/A
(Celsius Degree)
FIBER AREAL
WEIGHT
(116±3,75±3)
113,20
72,50
115,99
76,70
RESIN
CONTENT
(33±2,40±2)
35,00
39,90
34,80
40,14
T- PEACK
(Celsius Degree)
Glass Transition
Temperature
(Celsius Degree)
T- ONSET
A 04061 (YS90A) 04-916 (K13D2U) 04-913 (YS90A)
R. BAGAGLI
4
GLAST LAT Project
title - MRB 10 Mar 2005
Mechanical tests in Plyform, on Laminate (T 04024)
Laminate
Direction
0-degree
(Long Sidewall
Direction)
90-degree
(Short Sidewall
Direction)
0-degree
(Long Sidewall
Direction)
90-degree
(Short Sidewall
Direction)
0-degree
(Long Sidewall
Direction)
Loading
Measured Value
Type
Failure Strength Young’s Modulus
(Mpa)
(Gpa)
Tension
497,7
236,1
Tension
294,4
139,7
Compression
173,0
Not Required
Compression
124,5
Not Required
Short Beam Shear
34,5
Not Required
R. BAGAGLI
5
GLAST LAT Project
title - MRB 10 Mar 2005
Mechanical tests in COI, on Sample (1° Shipment)
R. BAGAGLI
6
GLAST LAT Project
title - MRB 10 Mar 2005
Physical Properties of Prepreg (2° Shipment)
2° LOT
PLYFORM
TEST
PROPERTIES
VALUE
Measured Value
A XXXX
(K13D2U)
A XXXX
(YS90A)
COI
Measured Value
A XXXX
(K13D2U)
A XXXX
(YS90A)
T- PEACK
(Celsius Degree)
Glass Transition
Temperature
(Celsius Degree)
>175°
T- ONSET
(Celsius Degree)
FIBER AREAL
WEIGHT
(116±3,75±3)
RESIN
CONTENT
(33±2,40±2)
ROLL ID
1
FIBER AREAL
WEIGHT
RESIN CONT ENT
AVERAGE CALCULATION
2
3
Measured Value
Measured Value
04-1560
(K13D2U)
04-1914
(YS90A)
04-1561
(K13D2U)
04-1568
(YS90A)
N/A
N/A
N/A
N/A
178,90
160,00
177,70
176,00
N/A
N/A
N/A
N/A
112,70
75,71
111,50
77,10
32,40
39,18
33,10
40,70
4
5
MEAN
74,12
74,14
77,71
77,12
75,45
75,708
39,2
39,54
38,76
39,11
39,31
39,184
R. BAGAGLI
7
GLAST LAT Project
title - MRB 10 Mar 2005
Mechanical tests in COI, on Sample (2° Shipment)
R. BAGAGLI
8
GLAST LAT Project
title - MRB 10 Mar 2005
Mechanical tests in COI, on Sample (2° Shipment)
R. BAGAGLI
9
GLAST LAT Project
title - MRB 10 Mar 2005
Process control parameters
PROCESS CONTROL
PROPERTIES
TEST
Type
VOID CONTENT
FIBER VOLUME
SBS
ASTM D2344-84
1° SHIPMENT
2° SHIPMENT
Measured Value
Measured Value
P 04142
P 04141
1,4
1,2
49,4
51,3
34,50
27,53
R. BAGAGLI
10
GLAST LAT Project
title - MRB 10 Mar 2005
Considerations on tests needed
1.
2.
3.
4.
5.
6.
Plyform performs mechanical tests on the laminate, COI perform tests on
unidirectional coupons.
Plyform has performed for the firs shipment the following tests: Test on
prepreg (physical properties), Test on Laminate (mechanical Tests),
Process control Tests (Fibr volume, Void Content, SBS). The Tests on
Laminate essentially validate the Plyform Process measuring mechanical
properties on the Plyform Laminate
The Tests on Laminate essentially validate the Plyform Process
measuring mechanical properties on the Plyform Laminate
The Test on Prepreg is an acceptance test repeated in Plyform to verify
the conformance on the COI report, and to explore any issue due to the
shipping.
The Process Control Test is important for monitoring the repeatbility of the
process and the conformance to the process
Mechanical Test on the Prepreg are performed per each lot from COI
before the delivery: if the prepreg is accepted from plyform by the means
of the Test on Prepreg and the Plyform Process is validate and controlled
by the means of Process Control Parameters then The Test on Laminate
on the second Shipment are redundant .
R. BAGAGLI
11
GLAST LAT Project
title - MRB 10 Mar 2005
Corrective actions
• corrective actions
– Rationale
• The Mechanical Properties Tested in COI (Compression,
Tensile, Shear) on The First Shipment and on The Second
Shipment are within The Specifications and Similar
– Proposal:
• Don’t Perform Mechanical Tests on The Second Shipment
– Consideration:
• Speed Schedule, Save Material
– Comment:
• The Mechanical Tests are redundant
– Impact to inventory
• The Mechanical Tests reduce the amount of material avoid any
possibilities of spare Sidewalls
R. BAGAGLI
12