Materials Failure Analysis of Cylindrical Supercapacitors_LESC_ClintLuna

Materials Analysis of Cylindrical Supercapacitors

LESC at UCSD

Prepared for Dr. Cyrus Rustomji

PI: Dr. Shirley Meng

Prepared by Clint Luna

September 2, 2016

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Table of Contents Page # Analysis of Aluminum-3003 2

Analysis of Steel AISI 1020 7

Analysis of Titanium Ti-5Al-2.5Sn 11

Summary of Results 15

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Aluminum-3003 Analysis Methods of Analysis: 1) To determine minimum wall thickness required for 2,000 psi in Aluminum-3003, wall thicknesses were varied and tested in increments of 0.5mm. 2) All components were fixed on the bottom side (as indicated by arrows in figures below) during simulations. 3) Wall thickness was made uniform on cylinder. 4) 2,000 psi applied uniformly and radially outward from inside 5) O.D. refers to the outermost dimension of cylinders and includes wall thickness.

Fig 1: AL-3003, 80 / 60 / 40 / 20 mm Diameter (left to right), wall thickness of 4mm for all. Only 20mm Dia. Cylinder survives.

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Fig 3: AL-3003, 20 mm O.D., 2000 psi, 4mm uniform wall thickness minimum. 3.95 x 10^4 KPa maximum stress on inside of cylinder.

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Fig 3: AL-3003, 40 mm O.D., 2000 psi, 9mm uniform wall thickness minimum. 3.95 x 10^4 KPa maximum stress near bottom of cylinder.

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Fig 4: AL-3003, 60 mm O.D., 2000 psi, 12.5mm uniform wall thickness minimum. 3.88 x 10^4 KPa maximum stress on bottom of cylinder.

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Fig 5: AL-3003, 80mm OD, 2000 psi, 17.5mm uniform wall thickness minimum. 4.03 x 10^4 KPa maximum stress on bottom of cylinder.

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Steel AISI 1020 Analysis Methods of Analysis: 1) All components were fixed on the bottom side (as indicated by arrows in figures below) during simulations. 2) Wall thickness was made uniform on cylinder. 3) 2,000 psi applied uniformly and radially outward. 4) O.D. refers to the outermost dimension of cylinders and includes wall thickness.

Fig 6: Steel AISI 2020, 20mm OD, 2000 psi, 0.5mm uniform wall thickness minimum. 3.31 x 10^5 KPa maximum stress on cylinder.

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Titanium Ti-5Al-2.5Sn Analysis Methods of Analysis: 1) All components were fixed on the bottom side (as indicated by arrows in figures below) during simulations. 2) Wall thickness was made uniform and radially outward on cylinder. 3) 2,000 psi applied uniformly. 4) O.D. refers to the outermost dimension of cylinders and includes wall thickness.

Fig 10: Ti-5Al-2.5Sn, 20mm OD, 2000 psi, 0.3 mm uniform wall thickness minimum. 5.44 x 10^5 KPa maximum stress on cylinder.

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Summary of Results:

4

9

12.5

17.5

0.5 0.9 1.4 1.8

0.3 0.5 0.7 0.90

2

4

6

8

10

12

14

16

18

20

0 10 20 30 40 50 60 70 80 90

Min

ium

um W

all T

hick

ness

Req

uire

d (m

m)

Outer Diameter (mm)

Aluminum 3003 / Steel AISI 1020 / Titanium Ti-5Al-2.5Sn(Analyzed at 2,000 Psi in Solidworks)

Aluminum 3003

Steel AISI 1020

Titanium Ti-5Al-2.5Sn

4

9

12.5

17.5

02468

101214161820

0 10 20 30 40 50 60 70 80 90

Min

ium

um W

all T

hick

ness

Req

uire

d (m

m)

Outer Diameter (mm)

Aluminum 3003(Analyzed at 2,000 Psi in Solidworks)

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0.5

0.9

1.4

1.8

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

0 10 20 30 40 50 60 70 80 90Min

ium

um W

all T

hick

ness

Req

uire

d (m

m)

Outer Diameter (mm)

Steel AISI 1020(Analyzed at 2,000 Psi in Solidworks)

0.3

0.5

0.7

0.9

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

0 10 20 30 40 50 60 70 80 90

Min

ium

um W

all T

hick

ness

Req

uire

d (m

m)

Outer Diamter (mm)

Titanium Ti-5Al-2.5Sn(Analyzed at 2,000 Psi in Solidworks)

Materials Failure Analysis of Cylindrical Supercapacitors_LESC_ClintLuna

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