Composite pressure vessel having a third generation advanced high strength steel (AHSS) filament reinforcement

Patent metadata

Field	Value
Publication number	US-9874311-B2
Application number	US-201414303815-A
Country	US
Kind code	B2
Filing date	Jun 13, 2014
Priority date	Jun 13, 2014
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A composite pressure vessel includes a liner to contain a pressurized fluid and a composite layer formed on at least a portion of an exterior surface of liner. The composite layer includes a third generation advanced high strength steel filament reinforcement embedded in a polymer matrix.

First claim

The invention claimed is:

1. A composite pressure vessel, comprising:
a liner to contain a pressurized fluid; and
a composite layer formed on at least a portion of an exterior surface of the liner, the composite layer including a third generation advanced high strength steel (AHSS) filament reinforcement having a tensile strength from about 800 MPa to about 1600 MPa and respective elongation from about 60 percent to about 10 percent embedded in a polymer matrix.

2. The composite pressure vessel as defined in claim 1 wherein the third generation AHSS filament is helically wound upon the at least portion of the exterior surface.

3. The composite pressure vessel as defined in claim 1 wherein the third generation AHSS filament is circumferentially wound upon the at least portion of the exterior surface.

4. The composite pressure vessel as defined in claim 1 wherein the third generation AHSS filament is woven into a fabric and the fabric is wrapped around the at least portion of the exterior surface.

5. The composite pressure vessel as defined in claim 1 wherein a Percent Elongation δ and a corresponding Tensile Strength TS of the third generation AHSS filament is bounded by solutions to

(

10
⁢

(

δ
-
35

)

-

(

-
.375

)

⁢

(

TS
-
1050

)

)

2

25664.0625

+

(

-
.375

⁢

(

δ
-
35

)

⁢
10

+

(

TS
-
1050

)

)

2

345039.0625

=
1

,

wherein TS is in units of MegaPascals (MPa).

6. The composite pressure vessel as defined in claim 5 wherein the third generation AHSS filament is NanoSteel, Carbide-Free Bainitic (CFB) steel or Quench Partitioned Boron steel.

7. The composite pressure vessel as defined in claim 1 wherein:
the liner is formed from a metal;
the liner has a cylindrical portion;
the liner has a dome sealingly engaged with a first end of the cylindrical portion;
the liner is to contain a gas at a service pressure without leakage or rupture without the composite layer;
the third generation AHSS filament is circumferentially or helically wound upon the cylindrical portion; and
the composite pressure vessel is to have a burst ratio of a burst pressure to the service pressure of at least 2.25.

8. The composite pressure vessel as defined in claim 7 wherein the service pressure is from about 20 MPa to about 25 MPa.

9. The composite pressure vessel as defined in claim 7 wherein a Percent Elongation δ and a corresponding Tensile Strength TS of the third generation AHSS filament is bounded by solutions to

(

10
⁢

(

δ
-
35

)

-

(

-
.375

)

⁢

(

TS
-
1050

)

)

2

25664.0625

+

(

-
.375

⁢

(

δ
-
35

)

⁢
10

+

(

TS
-
1050

)

)

2

Assignees

• Gm Global Tech Operations Llc

Inventors

• Morales Arianna T
• Abd Elhamid Mahmoud H
• Cai Mei
• Dailly Anne M

Classifications

• F17C2201/0123

  with variable thickness or diameter · CPC title

• F17C2203/067

  helically wound · CPC title

• F17C1/14

  constructed of aluminium; constructed of non-magnetic steel · CPC title

• F17C2223/036

  Very high pressure (>80 bar) · CPC title

• F17C2201/056

  Small (<1 m3) · CPC title