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Shear test with irradiated samples NA62 - DIPTEM Genova – UCL
5-09-2012
Shear tests with four different adhesive types:
Adhesive tape
NITTO DENKO 30 µm thick
Adhesive tape
3M 9461P – 30 µm thick
Liquid glue
Araldite 2020
Adhesive film
FastelFilm 30 µm thick
• Polyester film double coated by acrylic adhesive
• Polyester = 0.13-0.15 W/m K
Acrilyc = 0.2 W/m K
• 3M Adhesive 100 (Acrylic adhesive)
• 3M Adhesive 100 = 0.178 W/m K
• Two components epoxy liquid glue
• Epoxy = 0.188 W/m K
• EVA (Ethylene - vinyl Acetate) adhesive film
• EVA = 0.34 W/m K
⁻ Surface cleaning with acetone
⁻ 1 Kg for 65 hours
- Surface cleaning with acetone
- 1 Kg for 3 minutes- 80 °C in the oven (weight
and plate already hot)
⁻ Surface cleaning with acetone
⁻ Vacuum outgassing after mixing the component
⁻ Dispensing with a slice
⁻ Surface cleaning with acetone
⁻ 1 Kg for 65 hours
Silicon samples
Silicon samples 10 x 10 mm with wafers 525 µm thick
Silicon
glue
Silicon
Araldite: 25 samplesFastelFilm: 25 samplesNittoDenko: 25 samples3M: 25 samples
IrradiationIrradiation levels:- No irradiation- 3 x 10 13
- 1 x 10 14 nominal- 1 x 10 15
NITTO 3M FASTEL FILM ARALDITE
No irradiation
N001N002N003N004N005
M001M002M003M004M005
F001F002F003F004F005
A001A002A003A004A005
3 x 1013 N131N132N133N134N135
M131M132M133M134M135
F131F132F133F134F135
A131A132A133A134A135
1 x 1014
nominalN141N142N143N144N145
M141M142M143M144M145
F141F142F143F144F145
A141A142A143A144A145
1 x 1015 N151N152N153N154N155
M151M152M153M154M155
F151F152F153F154F155
A151A152A153A154A155
Spare NS6NS7NS8NS9NS0
MS6MS7MS8MS9MS0
FS6FS7FS8FS9FS0
AS6AS7AS8AS9AS0
Green = glued in Genova the 05-04-12 Red = glued at CERN the 22-05-12
Machine
Top clamp
Bottom clamp
INSTRON 8802 – Floor Model Fatigue Testing Systems up to 500 kN
Test procedureWorking set up
Stainless steel tool to performe the shear force on the samples
The tool has been inserted between the two plates of the machine
NITTO 3M FASTEL FILM ARALDITE
No irradiation N001N002N003N004N005
M001M002M003M004M005 (Si broken)
F001F002 (open)F003F004F005
A001 (Si broken)A002 (Si broken)A003 (Si broken)A004 (Si broken)A005 (Si broken)
3 x 1013 N131N132N133N134N135
M131M132M133M134 (Si broken)M135
F131F132 (open)F133F134F135
A131 (Si broken)A132 (Si broken)A133 (Si broken)A134 (Si broken)A135 (Si broken)
1 x 1014
nominalN141N142N143N144 (Si broken)N145
M141M142M143M144M145
F141F142 (open)F143 (Si broken)F144 (open)F145
A141 (Si broken)A142 (Si broken)A143 (Si broken)A144 (Si broken)A145 (Si broken)
1 x 1015 N151N152N153N154N155 (open)
M151M152M153M154M155
F151 (displaced)F152 (displaced)F153 (displaced)F154 (displaced)F155 (displaced)
A151 (Si broken)A152 (Si broken)A153 (Si broken)A154 (Si broken)A155 (Si broken)
Spare NS6NS7NS8NS9NS0
MS6MS7MS8MS9MS0
FS6FS7FS8 (open)FS9FS0 (open)
AS6 (Si broken)AS7 (Si broken)AS8 (Si broken)AS9 (Si broken)AS0 (Si broken)
Results – general outlook
NittoDenko – No irradiationF force (N)= σ * 100
D displacement (mm)= ε * 10
- First test (N001) ? Set up problems negletted
- Spare and no irradiation should have the same behavior!!
NittoDenko - 3 10 13 - 1 10 14 - 1 10 15 F force (N)= σ * 100
D displacement (mm)= ε * 10
For the first two radiations the adhesive becomes more rigid and stiff!In last case the adhesive is dead!
NittoDenko – Comparison
- Spare and no irradiation should have the same behavior!!
- The spread of the results is very small
Max value = 4.1 Mpa
3M – No irradiationF force (N)= σ * 100
D displacement (mm)= ε * 10
More or less same behavior!!
3M - 3 10 13 - 1 10 14 - 1 10 15 F force (N)= σ * 100
D displacement (mm)= ε * 10
For the first radiation the adhesive becomes more rigid and stiff! Then it starts to become softer in the last case the adhesive behaves like the non-irradiated one!
3M – Comparison
Max value = 4.5 Mpa
- First two equals!- Last case the adhesive is like
the non-irradiated one!
Fastelfilm – No irradiation F force (N)= σ * 100
D displacement (mm)= ε * 10
- Non repeatable!- Different behavior in this two
cases (????)
FastelFilm - 3 10 13 - 1 10 14
F force (N)= σ * 100
D displacement (mm)= ε * 10
First case is more rigid then it starts to melt under higher radiation!!!
FastelFilm – 1 10 15 F force (N)= σ * 100
D displacement (mm)= ε * 10
Tool broken: piece of silicon got stuck inside! re-machined the groove
FastelFilm – Comparison
Max value = 3.6 Mpa
The adhesive is thermoplastic, at high radiation it melts!(what’s the temperature inside the vessel during the irradiation???)
Araldite – No irradiation F force (N)= σ * 100
D displacement (mm)= ε * 10
New scale for the graphs! Values higher than for the
other adhesives!!!
Always tested the silicon!!!!
Araldite - 3 10 13 - 1 10 14 - 1 10 15 F force (N)= σ * 100
D displacement (mm)= ε * 10
The glue seems burned!!
Araldite – Comparison
Max value = 26 Mpa
The values are higher than before! We cannot say anything about the glue! (it is more resistant than silicon!!!!)