Apparatuses, methods, and products for cold spray additive manufacturing of multi curved and reinforced components

Patent metadata

Field	Value
Publication number	US-2025345985-A1
Application number	US-202519275075-A
Country	US
Kind code	A1
Filing date	Jul 21, 2025
Priority date	Mar 23, 2020
Publication date	Nov 13, 2025
Grant date	—

Abstract

Implementations provide cold spray additive manufacturing (“CSAM”)-based fabrication of a complex multi curvature part (“CMCP”) by cold spraying onto a mold. Implementations achieve the desired shape and dimensions of a CMCP having variable surface thicknesses and utilize reinforcements integrated during CSAM. Reinforcements are integral to each CMCP as soon as fabrication is complete, and maintain stiffness, avoid fluttering, and provide other similar benefits. Implementations provide a stiff CMCP with multiple curvatures having fully controllable variable thicknesses. Integral reinforcements added during fabrication avoid tolerance issues by avoiding coupling non-reinforced CMCPs to reinforcements or other post-fabrication adjustments. CSAM-based CMCPs, having directly integrated reinforcements, exhibit superior tolerances that do not need to be re-worked or otherwise corrected after fabrication. Reinforcement attachment methods that have complex load transfer behavior are not necessary. In some implementations, simplifying load transfer increases the maximum load and decreases the overall weight of the finished CMCP.

First claim

What is claimed is:

1 . A unified part prepared by a cold spray additive manufacturing process comprising the steps of:
configuring a mold to have a first portion and a second portion, a gap formed longitudinally between the first portion and the second portion, an outer surface of the first portion engaged with the second portion being a complex shape; positioning a reinforcement member in the gap; first cold spraying (i) one of the first portion or the second portion and (ii) the reinforcement member; and second cold spraying the second portion to form the unified part, the reinforcement member being integral with the unified part.

2 . The unified part of claim 1 , wherein the first cold spraying and the second cold spraying result in at least one surface on the unified part having variable thickness.

3 . The unified part of claim 1 , wherein the reinforcement member comprises a planar stiffener.

4 . The unified part of claim 1 , wherein the reinforcement member comprises a curvature corresponding to a curvature of the unified part.

5 . The unified part of claim 1 , wherein the reinforcement member is positioned longitudinally between first and second cold-sprayed portions of the unified part.

6 . The unified part of claim 1 , wherein the reinforcement member spans between portions of the unified part having different surface curvatures.

7 . The unified part of claim 1 , wherein the unified part comprises an outer surface formed with multiple radii of curvature.

8 . The unified part of claim 1 , wherein the reinforcement member comprises a segment that extends from an outer surface of the unified part.

9 . The unified part of claim 8 , wherein the segment of the reinforcement member is machined to be planar with the outer surface of the unified part.

10 . The unified part of claim 1 , wherein the reinforcement member is integral with the unified part such that it cannot be non-destructively removed.

11 . The unified part of claim 1 , wherein the reinforcement member is formed of a material dissimilar to that of surrounding portions of the unified part.

12 . A unified part comprising:
a body having a complex outer surface; and a reinforcement member disposed within the body and integrally bonded thereto, wherein the reinforcement member extends across a region of the body corresponding to a gap between structural features of the body, and wherein the body and the reinforcement member together form a single, continuous structure.

13 . The unified part of claim 12 , wherein the complex outer surface comprises at least two regions having different radii of curvature.

14 . The unified part of claim 12 , wherein the reinforcement member comprises a planar stiffener.

15 . The unified part of claim 12 , wherein the reinforcement member includes a curved portion corresponding to the shape of the complex outer surface.

16 . The unified part of claim 12 , wherein the reinforcement member is positioned between first and second adjoining regions of the body.

17 . The unified part of claim 12 , wherein the reinforcement member spans across non-parallel surfaces of the body.

18 . The unified part of claim 12 , wherein the body comprises at least one surface having variable thickness.

19 . The unified part of claim 12 , wherein a portion of the reinforcement member extends outwardly from the body.

20 . The unified part of claim 19 , wherein the outwardly extending portion is machined to be flush with an outer surface of the body.

Assignees

• Boeing Co

Inventors

• Zamorano Senderos Bruno
• Coad Dennis Lynn
• Young Kenneth W

Classifications

• B29C33/42

  characterised by the shape of the moulding surface, e.g. ribs or grooves · CPC title

• B29C33/20

  Opening, closing or clamping · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title