GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI1

MECHANICAL TESTS MISSING ON MECHANICAL TESTS MISSING ON SIDEWALL –Y, SN 004SIDEWALL –Y, SN 004

MRB Meeting – 10 March 2005

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI2

Description and reference documentationDescription and reference documentation

• Description of nonconformance – Mechanical Tests missing

• Instances– Not available

• Root cause– Schedule

• Reference NCR List– NCR n°434

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI3

ReferencesReferences

2° SHIPMENT

001 002 003 004 -X,+X, +Y 004 -Y

PREPREG ID TEST C/O PLYFORM

CERTIFICATE OF CONFORMANCY

MECHANICAL ID TEST C/O PLYFORM

N/A

PROCESS ID TEST C/O PLYFORM

P XXXXX

DRB DATE ID CERT. NUMBER C/O

PLYFORM30/12/2004 28/01/2005 09/03/2005 09/03/2005

P 04142 / T 04024 P 04141

1° SHIPMENTSIDEWALLS S/N /

TEST ID

A 04060 (SF-YS90A-75), A 04061 (K13D2U/CE3)

T 04024

1. THE FIRST SHIPMENT CONTAINS THE FOLLOWING LOTS: 04-916; 04-913

2. THE SECOND SHIPMENT CONTAINS THE FOLLOWING LOTS: 04-1560; 04-1561; 04-1914; 04-1568

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI4

Physical Properties of Prepreg (1° Shipment)Physical Properties of Prepreg (1° Shipment)

REFERENCE

VALUEA 04060

(K13D2U)A 04061 (YS90A) 04-916 (K13D2U) 04-913 (YS90A)

T- PEACK

(Celsius Degree)

Glass Transition Temperature

(Celsius Degree)

T- ONSET

(Celsius Degree)

FIBER AREAL WEIGHT

RESIN CONTENT

1° SHIPMENT

(116±3,75±3) 113,20 72,50

(33±2,40±2) 35,00 39,90

199,20

N/A 146,20 146,00 N/A

115,99

PLYFORM

PROPERTIES Measured Value

N/A 201,20 202,30

>175° 201,60

Measured Value

COI

34,80

N/A

167,40

N/A

76,70

40,14

N/A

179,40

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI5

Mechanical tests in Plyform, on Laminate (T 04024) Mechanical tests in Plyform, on Laminate (T 04024)

Loading

TypeFailure Strength

(Mpa)Young’s Modulus

(Gpa)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)

Laminate Direction

Measured Value

Tension 497,7 236,1

Short Beam Shear 34,5 Not Required

Tension 294,4 139,7

Compression 173,0 Not Required

Compression 124,5 Not Required

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI6

Mechanical tests in COI, on Sample (1° Shipment)Mechanical tests in COI, on Sample (1° Shipment)

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI7

Physical Properties of Prepreg (2° Shipment)Physical Properties of Prepreg (2° Shipment)

TEST

VALUEA XXXX

(K13D2U)A XXXX (YS90A)

A XXXX (K13D2U)

A XXXX (YS90A)

04-1560 (K13D2U)

04-1914 (YS90A)

04-1561 (K13D2U)

04-1568 (YS90A)

T- PEACK

(Celsius Degree)

Glass Transition Temperature

(Celsius Degree)

T- ONSET

(Celsius Degree)

FIBER AREAL WEIGHT

RESIN CONTENT

ROLL ID 1 2 3 4 5 MEANFIBER AREAL

WEIGHT 74,12 74,14 77,71 77,12 75,45 75,708

RESIN CONT ENT 39,2 39,54 38,76 39,11 39,31 39,184

2° LOT

(116±3,75±3)

(33±2,40±2)

178,90

N/A

112,70

PROPERTIES Measured Value

>175° 160,00

N/A

75,71

39,18

Measured Value

PLYFORM

Measured Value

N/A N/A

COI

Measured Value

N/AN/A

177,70 176,00

N/A N/A

AVERAGE CALCULATION

111,50 77,10

33,10 40,7032,40

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI8

Mechanical tests in COI, on Sample (2° Shipment)Mechanical tests in COI, on Sample (2° Shipment)

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI9

Mechanical tests in COI, on Sample (2° Shipment)Mechanical tests in COI, on Sample (2° Shipment)

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI10

Process control parametersProcess control parameters

TEST

Type P 04142 P 04141

VOID CONTENT

FIBER VOLUME

SBS

2° SHIPMENT

Measured Value

1,4 1,2

ASTM D2344-84 34,50 27,53

1° SHIPMENT

49,4 51,3

PROCESS CONTROL

PROPERTIES Measured Value

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI11

Considerations on tests neededConsiderations on tests needed

1. Plyform performs mechanical tests on the laminate, COI perform tests on unidirectional coupons.

2. 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

3. The Tests on Laminate essentially validate the Plyform Process measuring mechanical properties on the Plyform Laminate

4. 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.

5. The Process Control Test is important for monitoring the repeatbility of the process and the conformance to the process

6. 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 .

GLAST LAT Project title - MRB 10 Mar 2005

R. BAGAGLI12

Corrective actionsCorrective 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