Ballistic-resistant helmet and method for producing the same
AssigneeBoeing North American, Inc.
InventorSami M. El-Soudani
Life of this patent
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Abstract
In one broad aspect the present invention comprises the steps of providing a titanium-based material preform and superplastically forming the preform to a final helmet shape. In another broad aspect, a first piece of fiber-reinforced titanium matrix composite material is hot isostatically pressed (HIP'ed) to form a side wall section. A second piece of fiber-reinforced titanium matrix composite material is hot pressed to form an upper dome section. The side wall section is then HIP/diffusion bonded to the upper dome section.
Claims11
A process for forming a ballistic resistant helmet, comprising the steps of:
- a) pre-machining a titanium-based alloy preform, comprising:
- i) a central region which is relatively thick;
- ii) a central tapering region about said central region;
- iii) a near periphery region about said central tapering region, said near periphery region being relatively thin;
- iv) a peripheral tapering region about said near periphery region;
- and
- v) a periphery region about said peripheral tapering region, being relatively thick;
- b) mounting said premachined preform to a female tool assembly having a desired helmet shape and mechanically pressing said preform to provide a desired sealing;
- and
- c) superplastically forming said premachined preform to a final helmet shape.
A process for forming a ballistic resistant helmet, comprising the steps of:
- a) pre-machining a titanium-based alloy preform, comprising:
- i) a central region which is relatively thin;
- ii) a central tapering region about said central region;
- iii) a near periphery region about said central tapering region, said near periphery region being relatively thick;
- iv) a peripheral tapering region about said near periphery region;
- and
- v) a periphery region about said peripheral tapering region being relatively thin;
- b) mounting said premachined preform to a male tool assembly having a desired helmet shape and mechanically pressing said preform to provide a desired sealing;
- and
- c) superplastically forming said premachined preform to a final helmet shape.
A process for forming a ballistic resistant helmet, comprising the steps of:
- a) hot isostatically pressing (HIP'ing) a first piece of fiber-reinforced titanium matrix composite material to form a side wall section;
- b) hot pressing a second piece of fiber-reinforced titanium matrix composite material to form an upper dome section;
- and
- c) HIP/diffusion bonding said side wall section to said upper dome section.
Dependencies are inferred from the claim text.